Myosins are actin-based motor molecules with ATPase activity. Unconventional myosins serve in intracellular movements: can function in cells as a single-molecule cargo transporter. A very slow and high-duty-ratio motor, may be suitable for tension maintenance of actin filaments. Their highly divergent tails are presumed to bind to membranous compartments, which would be moved relative to actin filaments. Plays a key role in the formation of cellular projections and other actin-based functions required for embryonic and larval viability. Necessary for auditory transduction: plays a role in Johnston organ (JO) organization by functioning in scolopidial apical attachment and therefore to acoustic stimulus propagation from the antenna a2/a3 joint to transducing elements. Aedes aegypti (taxid: 7159)
Score = 78.2 bits (191), Expect = 2e-14, Method: Compositional matrix adjust.
Identities = 36/63 (57%), Positives = 47/63 (74%), Gaps = 1/63 (1%)
Query: 1 MQYLAAVNKSPSNLITEQILEASPLLESFGNAKTVRNDNSSRFGKFLQVHFKELNTEEEE 60
+QYLAA++ S I +QILEA+P+LE+FGNAKT+RNDNSSRFGK++ +HF E
Sbjct: 170 LQYLAAISGKHS-WIEQQILEANPILEAFGNAKTIRNDNSSRFGKYIDIHFSANGVIEGA 228
Query: 61 KEE 63
K E
Sbjct: 229 KIE 231
Myosins are actin-based motor molecules with ATPase activity. Unconventional myosins serve in intracellular movements: can function in cells as a single-molecule cargo transporter. A very slow and high-duty-ratio motor, may be suitable for tension maintenance of actin filaments. Their highly divergent tails are presumed to bind to membranous compartments, which would be moved relative to actin filaments. Plays a key role in the formation of cellular projections and other actin-based functions required for embryonic and larval viability. Necessary for auditory transduction: plays a role in Johnston organ (JO) organization by functioning in scolopidial apical attachment and therefore to acoustic stimulus propagation from the antenna a2/a3 joint to transducing elements.
Score = 78.2 bits (191), Expect = 2e-14, Method: Compositional matrix adjust.
Identities = 36/63 (57%), Positives = 47/63 (74%), Gaps = 1/63 (1%)
Query: 1 MQYLAAVNKSPSNLITEQILEASPLLESFGNAKTVRNDNSSRFGKFLQVHFKELNTEEEE 60
+QYLAA++ S I +QILEA+P+LE+FGNAKT+RNDNSSRFGK++ +HF E
Sbjct: 170 LQYLAAISGKHS-WIEQQILEANPILEAFGNAKTIRNDNSSRFGKYIDIHFSANGVIEGA 228
Query: 61 KEE 63
K E
Sbjct: 229 KIE 231
Myosins are actin-based motor molecules with ATPase activity. Unconventional myosins serve in intracellular movements: can function in cells as a single-molecule cargo transporter. A very slow and high-duty-ratio motor, may be suitable for tension maintenance of actin filaments. Their highly divergent tails are presumed to bind to membranous compartments, which would be moved relative to actin filaments. Plays a key role in the formation of cellular projections and other actin-based functions required for embryonic and larval viability. Necessary for auditory transduction: plays a role in Johnston organ (JO) organization by functioning in scolopidial apical attachment and therefore to acoustic stimulus propagation from the antenna a2/a3 joint to transducing elements.
Myosins are actin-based motor molecules with ATPase activity. Unconventional myosins serve in intracellular movements. Their highly divergent tails bind to membranous compartments, which are then moved relative to actin filaments. In the retina, plays an important role in the renewal of the outer photoreceptor disks. Plays an important role in the distribution and migration of retinal pigment epithelial (RPE) melanosomes and phagosomes, and in the regulation of opsin transport in retinal photoreceptors. Mediates intracellular transport of RPE65 in the retina pigment epithelium. In the inner ear, plays an important role in differentiation, morphogenesis and organization of cochlear hair cell bundles. Motor protein that is a part of the functional network formed by USH1C, USH1G, CDH23 and MYO7A that mediates mechanotransduction in cochlear hair cells. Required for normal hearing. Involved in hair-cell vesicle trafficking of aminoglycosides, which are known to induce ototoxicity.
Score = 76.3 bits (186), Expect = 6e-14, Method: Compositional matrix adjust.
Identities = 34/63 (53%), Positives = 48/63 (76%), Gaps = 1/63 (1%)
Query: 1 MQYLAAVNKSPSNLITEQILEASPLLESFGNAKTVRNDNSSRFGKFLQVHFKELNTEEEE 60
+Q+LAA++ S I +Q+LEA+P+LE+FGNAKT+RNDNSSRFGK++ +HF + E
Sbjct: 172 LQFLAAISGQHS-WIEQQVLEATPILEAFGNAKTIRNDNSSRFGKYIDIHFNKRGAIEGA 230
Query: 61 KEE 63
K E
Sbjct: 231 KIE 233
Myosins are actin-based motor molecules with ATPase activity. Unconventional myosins serve in intracellular movements. Their highly divergent tails bind to membranous compartments, which are then moved relative to actin filaments. In the retina, plays an important role in the renewal of the outer photoreceptor disks. Plays an important role in the distribution and migration of retinal pigment epithelial (RPE) melanosomes and phagosomes, and in the regulation of opsin transport in retinal photoreceptors. In the inner ear, plays an important role in differentiation, morphogenesis and organization of cochlear hair cell bundles. Involved in hair-cell vesicle trafficking of aminoglycosides, which are known to induce ototoxicity (By similarity). Motor protein that is a part of the functional network formed by USH1C, USH1G, CDH23 and MYO7A that mediates mechanotransduction in cochlear hair cells. Required for normal hearing.
Myosins are actin-based motor molecules with ATPase activity. Unconventional myosins serve in intracellular movements. Their highly divergent tails bind to membranous compartments, which are then moved relative to actin filaments. In the retina, plays an important role in the renewal of the outer photoreceptor disks. Plays an important role in the distribution and migration of retinal pigment epithelial (RPE) melanosomes and phagosomes, and in the regulation of opsin transport in retinal photoreceptors. In the inner ear, plays an important role in differentiation, morphogenesis and organization of cochlear hair cell bundles. Motor protein that is a part of the functional network formed by USH1C, USH1G, CDH23 and MYO7A that mediates mechanotransduction in cochlear hair cells. Required for normal hearing. Involved in hair-cell vesicle trafficking of aminoglycosides, which are known to induce ototoxicity.
Score = 75.1 bits (183), Expect = 1e-13, Method: Compositional matrix adjust.
Identities = 35/63 (55%), Positives = 48/63 (76%), Gaps = 1/63 (1%)
Query: 1 MQYLAAVNKSPSNLITEQILEASPLLESFGNAKTVRNDNSSRFGKFLQVHFKELNTEEEE 60
+Q+LA ++ S I +Q+LEA+P+LE+FGNAKT+RNDNSSRFGK++ VHF E + E
Sbjct: 169 LQFLATISGQHS-WIEQQVLEANPVLEAFGNAKTIRNDNSSRFGKYIDVHFNESGSIEGA 227
Query: 61 KEE 63
K E
Sbjct: 228 KIE 230
Myosins are actin-based motor molecules with ATPase activity. Unconventional myosins serve in intracellular movements. Their highly divergent tails are presumed to bind to membranous compartments, which would be moved relative to actin filaments.
Score = 74.7 bits (182), Expect = 1e-13, Method: Compositional matrix adjust.
Identities = 35/63 (55%), Positives = 48/63 (76%), Gaps = 1/63 (1%)
Query: 1 MQYLAAVNKSPSNLITEQILEASPLLESFGNAKTVRNDNSSRFGKFLQVHFKELNTEEEE 60
+Q+LA ++ S I +Q+LEA+P+LE+FGNAKT+RNDNSSRFGK++ VHF E + E
Sbjct: 169 LQFLATISGQHS-WIEQQVLEANPVLEAFGNAKTIRNDNSSRFGKYIDVHFNESGSIEGA 227
Query: 61 KEE 63
K E
Sbjct: 228 KIE 230
Myosins are actin-based motor molecules with ATPase activity. Unconventional myosins serve in intracellular movements. Their highly divergent tails are presumed to bind to membranous compartments, which would be moved relative to actin filaments.
Large ATPases. ATPase; molecular motor. Muscle contraction consists of a cyclical interaction between myosin and actin. The core of the myosin structure is similar in fold to that of kinesin. Length = 677
>gnl|CDD|238071 cd00124, MYSc, Myosin motor domain
Score = 83.9 bits (208), Expect = 3e-20
Identities = 31/51 (60%), Positives = 42/51 (82%)
Query: 1 MQYLAAVNKSPSNLITEQILEASPLLESFGNAKTVRNDNSSRFGKFLQVHF 51
M+YLA++ S I E+IL A+P+LE+FGNAKTVRN+NSSRFGKF+++ F
Sbjct: 107 MKYLASLAGSNDTGIEEKILAANPILEAFGNAKTVRNNNSSRFGKFIELQF 157
This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. Length = 679
>gnl|CDD|238683 cd01387, MYSc_type_XV, Myosin motor domain, type XV myosins
In vertebrates, myosin XV appears to be expressed in sensory tissue and play a role in hearing. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. Length = 677
>gnl|CDD|238673 cd01377, MYSc_type_II, Myosin motor domain, type II myosins
Myosin II mediates cortical contraction in cell motility, and is the motor in smooth and skeletal muscle. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. Length = 693
>gnl|CDD|215687 pfam00063, Myosin_head, Myosin head (motor domain)
Myosin I generates movement at the leading edge in cell motility, and class I myosins have been implicated in phagocytosis and vesicle transport. Myosin I, an unconventional myosin, does not form dimers. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. Length = 674
>gnl|CDD|238677 cd01381, MYSc_type_VII, Myosin motor domain, type VII myosins
Myosins in this group have been associated with functions in sensory systems such as vision and hearing. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. Length = 671
>gnl|CDD|238676 cd01380, MYSc_type_V, Myosin motor domain, type V myosins
Score = 72.0 bits (177), Expect = 4e-16
Identities = 28/61 (45%), Positives = 42/61 (68%), Gaps = 5/61 (8%)
Query: 1 MQYLAAVNKSPSNL-----ITEQILEASPLLESFGNAKTVRNDNSSRFGKFLQVHFKELN 55
M+Y A+V S S + E++L ++P++E+FGNAKT RNDNSSRFGK++Q+ F +
Sbjct: 107 MRYFASVGGSDSREVSETQVEEKVLASNPIMEAFGNAKTTRNDNSSRFGKYIQILFDKRG 166
Query: 56 T 56
Sbjct: 167 R 167
Myosins V transport a variety of intracellular cargo processively along actin filaments, such as membraneous organelles and mRNA. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. Length = 691
>gnl|CDD|238680 cd01384, MYSc_type_XI, Myosin motor domain, plant-specific type XI myosin, involved in organelle transport
This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. Length = 674
>gnl|CDD|238678 cd01382, MYSc_type_VI, Myosin motor domain, type VI myosins
Score = 69.0 bits (169), Expect = 3e-15
Identities = 29/41 (70%), Positives = 38/41 (92%)
Query: 15 ITEQILEASPLLESFGNAKTVRNDNSSRFGKFLQVHFKELN 55
I ++I+EA+PLLE+FGNAKTVRN+NSSRFGKF+++HF E N
Sbjct: 125 IDDRIVEANPLLEAFGNAKTVRNNNSSRFGKFVEIHFNEKN 165
Myosin VI is a monomeric myosin, which moves towards the minus-end of actin filaments, in contrast to most other myosins. It has been implicated in endocytosis, secretion, and cell migration. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the minus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. Length = 717
>gnl|CDD|238679 cd01383, MYSc_type_VIII, Myosin motor domain, plant-specific type VIII myosins, a subgroup which has been associated with endocytosis, cytokinesis, cell-to-cell coupling and gating at plasmodesmata
This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. Length = 677
>gnl|CDD|227355 COG5022, COG5022, Myosin heavy chain [Cytoskeleton]
Myosin III has been shown to play a role in the vision process in insects and in hearing in mammals. Myosin III, an unconventional myosin, does not form dimers. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. Length = 653
>gnl|CDD|238681 cd01385, MYSc_type_IX, Myosin motor domain, type IX myosins
Myosin IX is a processive single-headed motor, which might play a role in signalling. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. Length = 692
>gnl|CDD|238659 cd01363, Motor_domain, Myosin and Kinesin motor domain
The chloroplast genomes of most higher plants contain two giant open reading frames designated ycf1 and ycf2. Although the function of Ycf1 is unknown, it is known to be an essential gene. Length = 832
>gnl|CDD|179712 PRK04019, rplP0, acidic ribosomal protein P0; Validated
The YqfQ-like protein family includes the B. subtilis YqfQ protein, also known as VrrA, which is functionally uncharacterized. This family of proteins is found in bacteria. Proteins in this family are typically between 146 and 237 amino acids in length. There are two conserved sequence motifs: QYGP and PKLY. Length = 155
>gnl|CDD|235250 PRK04195, PRK04195, replication factor C large subunit; Provisional
Myosin III has been shown to play a role in the vision process in insects and in hearing in mammals. Myosin III, an unconventional myosin, does not form dimers. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the
>cd01380 MYSc_type_V Myosin motor domain, type V myosins
Myosins V transport a variety of intracellular cargo processively along actin filaments, such as membraneous organelles and mRNA. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an act
>cd01377 MYSc_type_II Myosin motor domain, type II myosins
Myosin II mediates cortical contraction in cell motility, and is the motor in smooth and skeletal muscle. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydro
>cd01381 MYSc_type_VII Myosin motor domain, type VII myosins
Myosins in this group have been associated with functions in sensory systems such as vision and hearing. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydr
>cd01385 MYSc_type_IX Myosin motor domain, type IX myosins
Myosin IX is a processive single-headed motor, which might play a role in signalling. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the hea
>cd01386 MYSc_type_XVIII Myosin motor domain, type XVIII myosins
This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the
>cd01383 MYSc_type_VIII Myosin motor domain, plant-specific type VIII myosins, a subgroup which has been associated with endocytosis, cytokinesis, cell-to-cell coupling and gating at plasmodesmata
This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates f
This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the fila
>cd01382 MYSc_type_VI Myosin motor domain, type VI myosins
Myosin VI is a monomeric myosin, which moves towards the minus-end of actin filaments, in contrast to most other myosins. It has been implicated in endocytosis, secretion, and cell migration. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the minus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of
>cd01384 MYSc_type_XI Myosin motor domain, plant-specific type XI myosin, involved in organelle transport
This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new act
>cd01378 MYSc_type_I Myosin motor domain, type I myosins
Myosin I generates movement at the leading edge in cell motility, and class I myosins have been implicated in phagocytosis and vesicle transport. Myosin I, an unconventional myosin, does not form dimers. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 picon
Large ATPases. ATPase; molecular motor. Muscle contraction consists of a cyclical interaction between myosin and actin. The core of the myosin structure is similar in fold to that of kinesin.
>cd01387 MYSc_type_XV Myosin motor domain, type XV myosins
In vertebrates, myosin XV appears to be expressed in sensory tissue and play a role in hearing. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis caus
>PF00063 Myosin_head: Myosin head (motor domain); InterPro: IPR001609 Muscle contraction is caused by sliding between the thick and thin filaments of the myofibril
Myosin is a major component of thick filaments and exists as a hexamer of 2 heavy chains [], 2 alkali light chains, and 2 regulatory light chains. The heavy chain can be subdivided into the N-terminal globular head and the C-terminal coiled-coil rod-like tail, although some forms have a globular region in their C-terminal. There are many cell-specific isoforms of myosin heavy chains, coded for by a multi-gene family []. Myosin interacts with actin to convert chemical energy, in the form of ATP, to mechanical energy []. The 3-D structure of the head portion of myosin has been determined [] and a model for actin-myosin complex has been constructed []. The globular head is well conserved, some highly-conserved regions possibly relating to functional and structural domains []. The rod-like tail starts with an invariant proline residue, and contains many repeats of a 28 residue region, interrupted at 4 regularly-spaced points known as skip residues. Although the sequence of the tail is not well conserved, the chemical character is, hydrophobic, charged and skip residues occuring in a highly ordered and repeated fashion [].; GO: 0003774 motor activity, 0005524 ATP binding, 0016459 myosin complex; PDB: 1LKX_A 2V26_A 2BKI_A 3L9I_A 2BKH_A 2X51_A 2VB6_A 2VAS_A 1OE9_A 1W8J_A ....
>pdb|2AKA|A Chain A, Structure Of The Nucleotide-Free Myosin Ii Motor Domain From Dictyostelium Discoideum Fused To The Gtpase Domain Of Dynamin 1 From Rattus Norvegicus Length = 776
>pdb|1MMN|A Chain A, X-Ray Structures Of The Mgadp, Mgatpgammas, And Mgamppnp Complexes Of The Dictyostelium Discoideum Myosin Motor Domain Length = 762
>pdb|1MMA|A Chain A, X-Ray Structures Of The Mgadp, Mgatpgammas, And Mgamppnp Complexes Of The Dictyostelium Discoideum Myosin Motor Domain Length = 762
>pdb|1LVK|A Chain A, X-Ray Crystal Structure Of The Mg (Dot) 2'(3')-O-(N- Methylanthraniloyl) Nucleotide Bound To Dictyostelium Discoideum Myosin Motor Domain Length = 762
>pdb|2Y9E|X Chain X, Structural Basis For The Allosteric Interference Of Myosin Function By Mutants G680a And G680v Of Dictyostelium Myosin-2 Length = 758
>pdb|1MMG|A Chain A, X-Ray Structures Of The Mgadp, Mgatpgammas, And Mgamppnp Complexes Of The Dictyostelium Discoideum Myosin Motor Domain Length = 762
>pdb|2Y0R|X Chain X, Structural Basis For The Allosteric Interference Of Myosin Function By Mutants G680a And G680v Of Dictyostelium Myosin-2 Length = 758
>pdb|2OS8|A Chain A, Rigor-Like Structures Of Muscle Myosins Reveal Key Mechanical Elements In The Transduction Pathways Of This Allosteric Motor Length = 840
>pdb|3MYH|X Chain X, Insights Into The Importance Of Hydrogen Bonding In The Gamma- Phosphate Binding Pocket Of Myosin: Structural And Functional Studies Of Ser236 Length = 762
>pdb|1I84|S Chain S, Cryo-Em Structure Of The Heavy Meromyosin Subfragment Of Chicken Gizzard Smooth Muscle Myosin With Regulatory Light Chain In The Dephosphorylated State. Only C Alphas Provided For Regulatory Light Chain. Only Backbone Atoms Provided For S2 Fragment. Length = 1184
>pdb|3J04|A Chain A, Em Structure Of The Heavy Meromyosin Subfragment Of Chick Smooth Muscle Myosin With Regulatory Light Chain In Phosphorylated State Length = 909
>pdb|1QVI|A Chain A, Crystal Structure Of Scallop Myosin S1 In The Pre-Power Stroke State To 2.6 Angstrom Resolution: Flexibility And Function In The Head Length = 840
>1g8x_A Myosin II heavy chain fused to alpha-actinin 3; motor, lever ARM, protein engineering, structural protein; HET: ADP; 2.80A {Dictyostelium discoideum} SCOP: k.1.1.1
