Tropomyosin, in association with the troponin complex, plays a central role in the calcium dependent regulation of muscle contraction. Periplaneta fuliginosa (taxid: 36977)
>sp|Q9NG56|TPM_BLAGE Tropomyosin OS=Blattella germanica PE=2 SV=1
This family is a set of eukaryotic tropomyosins. Within the yeast Tmp1 and Tmp2, biochemical and sequence analyses indicate that Tpm2p spans four actin monomers along a filament, whereas Tpmlp spans five. Despite its shorter length, Tpm2p can compete with Tpm1p for binding to F-actin. Over-expression of Tpm2p in vivo alters the axial budding of haploids to a bipolar pattern, and this can be partially suppressed by co-over-expression of Tpm1p. This suggests distinct functions for the two tropomyosins, and indicates that the ratio between them is important for correct morphogenesis. The family also contains higher eukaryote Tmp3 members. Length = 143
>PF00261 Tropomyosin: Tropomyosin; InterPro: IPR000533 Tropomyosins [], are a family of closely related proteins present in muscle and non-muscle cells
In striated muscle, tropomyosin mediate the interactions between the troponin complex and actin so as to regulate muscle contraction []. The role of tropomyosin in smooth muscle and non-muscle tissues is not clear. Tropomyosin is an alpha-helical protein that forms a coiled-coil structure of 2 parallel helices containing 2 sets of 7 alternating actin binding sites []. There are multiple cell-specific isoforms, created by differential splicing of the messenger RNA from one gene, but the proportions of the isoforms vary between different cell types. Muscle isoforms of tropomyosin are characterised by having 284 amino acid residues and a highly conserved N-terminal region, whereas non-muscle forms are generally smaller and are heterogeneous in their N-terminal region. This entry represents tropomyosin (Tmp) 1, 2 and 3. Within the yeast Tmp1 and Tmp2, biochemical and sequence analyses indicate that Tpm2 spans four actin monomers along a filament, whereas Tpm1 spans five. Despite its shorter length, Tpm2 can compete with Tpm1 for binding to F-actin. Over-expression of Tpm2 in vivo alters the axial budding of haploids to a bipolar pattern, and this can be partially suppressed by co-over-expression of Tpm1. This suggests distinct functions for the two tropomyosins, and indicates that the ratio between them is important for correct morphogenesis [].; PDB: 2EFR_A 2Z5H_C 2Z5I_D 2D3E_B 2EFS_D 3U59_B 1C1G_C 1IHQ_A 3AZD_B 1MV4_B ....
>PF12718 Tropomyosin_1: Tropomyosin like; InterPro: IPR000533 Tropomyosins [], are a family of closely related proteins present in muscle and non-muscle cells
In striated muscle, tropomyosin mediate the interactions between the troponin complex and actin so as to regulate muscle contraction []. The role of tropomyosin in smooth muscle and non-muscle tissues is not clear. Tropomyosin is an alpha-helical protein that forms a coiled-coil structure of 2 parallel helices containing 2 sets of 7 alternating actin binding sites []. There are multiple cell-specific isoforms, created by differential splicing of the messenger RNA from one gene, but the proportions of the isoforms vary between different cell types. Muscle isoforms of tropomyosin are characterised by having 284 amino acid residues and a highly conserved N-terminal region, whereas non-muscle forms are generally smaller and are heterogeneous in their N-terminal region. This entry represents tropomyosin (Tmp) 1, 2 and 3. Within the yeast Tmp1 and Tmp2, biochemical and sequence analyses indicate that Tpm2 spans four actin monomers along a filament, whereas Tpm1 spans five. Despite its shorter length, Tpm2 can compete with Tpm1 for binding to F-actin. Over-expression of Tpm2 in vivo alters the axial budding of haploids to a bipolar pattern, and this can be partially suppressed by co-over-expression of Tpm1. This suggests distinct functions for the two tropomyosins, and indicates that the ratio between them is important for correct morphogenesis [].
>PF12718 Tropomyosin_1: Tropomyosin like; InterPro: IPR000533 Tropomyosins [], are a family of closely related proteins present in muscle and non-muscle cells
In striated muscle, tropomyosin mediate the interactions between the troponin complex and actin so as to regulate muscle contraction []. The role of tropomyosin in smooth muscle and non-muscle tissues is not clear. Tropomyosin is an alpha-helical protein that forms a coiled-coil structure of 2 parallel helices containing 2 sets of 7 alternating actin binding sites []. There are multiple cell-specific isoforms, created by differential splicing of the messenger RNA from one gene, but the proportions of the isoforms vary between different cell types. Muscle isoforms of tropomyosin are characterised by having 284 amino acid residues and a highly conserved N-terminal region, whereas non-muscle forms are generally smaller and are heterogeneous in their N-terminal region. This entry represents tropomyosin (Tmp) 1, 2 and 3. Within the yeast Tmp1 and Tmp2, biochemical and sequence analyses indicate that Tpm2 spans four actin monomers along a filament, whereas Tpm1 spans five. Despite its shorter length, Tpm2 can compete with Tpm1 for binding to F-actin. Over-expression of Tpm2 in vivo alters the axial budding of haploids to a bipolar pattern, and this can be partially suppressed by co-over-expression of Tpm1. This suggests distinct functions for the two tropomyosins, and indicates that the ratio between them is important for correct morphogenesis [].
>PF04728 LPP: Lipoprotein leucine-zipper; InterPro: IPR006817 This repeating sequence, NAKVDQLSNDV, is found in the enterobacterial outer membrane lipoprotein LPP
The outer membrane lipoprotein is the most abundant protein in an Escherichia coli cell. The messenger RNA for the lipoprotein of the E. coli outer membrane codes for a putative precursor, prolipoprotein, which has 20 additional amino acid residues extending from the amino terminus of the lipoprotein.; GO: 0019867 outer membrane; PDB: 1JCC_A 2GUV_C 2GUS_A 1JCD_A 1KFM_A 1T8Z_D 1KFN_A 1EQ7_A.
>PF00261 Tropomyosin: Tropomyosin; InterPro: IPR000533 Tropomyosins [], are a family of closely related proteins present in muscle and non-muscle cells
In striated muscle, tropomyosin mediate the interactions between the troponin complex and actin so as to regulate muscle contraction []. The role of tropomyosin in smooth muscle and non-muscle tissues is not clear. Tropomyosin is an alpha-helical protein that forms a coiled-coil structure of 2 parallel helices containing 2 sets of 7 alternating actin binding sites []. There are multiple cell-specific isoforms, created by differential splicing of the messenger RNA from one gene, but the proportions of the isoforms vary between different cell types. Muscle isoforms of tropomyosin are characterised by having 284 amino acid residues and a highly conserved N-terminal region, whereas non-muscle forms are generally smaller and are heterogeneous in their N-terminal region. This entry represents tropomyosin (Tmp) 1, 2 and 3. Within the yeast Tmp1 and Tmp2, biochemical and sequence analyses indicate that Tpm2 spans four actin monomers along a filament, whereas Tpm1 spans five. Despite its shorter length, Tpm2 can compete with Tpm1 for binding to F-actin. Over-expression of Tpm2 in vivo alters the axial budding of haploids to a bipolar pattern, and this can be partially suppressed by co-over-expression of Tpm1. This suggests distinct functions for the two tropomyosins, and indicates that the ratio between them is important for correct morphogenesis [].; PDB: 2EFR_A 2Z5H_C 2Z5I_D 2D3E_B 2EFS_D 3U59_B 1C1G_C 1IHQ_A 3AZD_B 1MV4_B ....
>COG1579 Zn-ribbon protein, possibly nucleic acid-binding [General function prediction only]
Crystal Structure Of Tropomyosin At 7 Angstroms Res
3e-04
>pdb|2TMA|A Chain A, Tropomyosin Crystal Structure And Muscle Regulation. Appendix. Construction Of An Atomic Model For Tropomyosin And Implications For Interactions With Actin Length = 284
