Psyllid ID: psy5734


Local Sequence Feature Prediction

Prediction and (Method)Result
Residue Number Marker
Protein Sequence ?
Secondary Structure (PSIPRED) ?
Secondary Structure Prediction (SSPRO) ?
Coil and Loop (DISEMBL) ?
Flexible Loop (DISEMBL) ?
Low Complexity Region (SEG) ?
Disordered region (IsUnstruct) ?
Disordered Region (DISOPRED) ?
Disordered Region (DISEMBL) ?
Disordered Region (DISPRO) ?
Transmembrane Helix (TMHMM) ?
Transmembrane Helix (HMMTOP) ?
Transmembrane Helix (MEMSAT) ?
TM Helix, Signal Peptide (MEMSAT_SVM) ?
TM Helix, Signal Peptide (Phobius) ?
Signal Peptide (SignalP HMM Mode) ?
Signal Peptide (SignalP NN Mode) ?
Coiled Coils (COILS) ?
Positional Conservation ?
 
--------10--------20--------30--------40--------50--------60--------70--------80--------90-------100-------110-------120-------130-------140-------150-------160-------170-------180-------190-------200-----
MAEEAGKESSREKLLFYTTAFFILLAIFSLFGFLFLVPFVIEPACTTIMREFDEVPATCETIQVENLRGASNCSWTSCREGCTREIYECTQITVSYKVSVNTSVQSTITAQSLRLYNRFRRAVLGEDDVLLPSFEDNFLETPAIPEGNSSEWDFVGAKFFPNVKGCGYPPYLNCSIFHKKYAVVGKQYPCYYSTVEPALVIVPIG
cccccccHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHcccccHHHHHHHccccccccEEEEEEEEEEccccccccHHHccccccccEEEEEEEEEEEEcccccccccHHHHHHHHHcccccccccccccccccccccccccccccccccccccccccEEEEccccccccccccHHHHHHHHcccccccEEEEEcccccEEEEEcc
cccHcccccHHHHHHHHHHHHHHHHHHHHHHHHHHHcHHEEcHHHHHHHcccccccEEEEEEEEEHccccccccccccccccccHccccEEEEEEEEccccccccccccccccHHHccccccccccccccccccccccccccccccccccEEEEEcEEEEEccccccccccccHHHHHHHHccccccccEEEEcccccEEEEEcc
maeeagkessrEKLLFYTTAFFILLAIFSLFGflflvpfviepaCTTIMrefdevpatceTIQVenlrgasncswtscregctreiyECTQITVSYKVSVNTSVQSTITAQSLRLYNRFRRavlgeddvllpsfednfletpaipegnssewdfvgakffpnvkgcgyppylncsifhkkyavvgkqypcyystvepalvivpig
maeeagkessreKLLFYTTAFFILLAIFSLFGFLFLVPFVIEPACTTIMREFDEVPATCETIQvenlrgasncswTSCREGCTREIYECTQITVSYKVSVNTSVQSTITAQSLRLYNRFRRAVLGEDDVLLPSFEDNFLETPAIPEGNSSEWDFVGAKFFPNVKGCGYPPYLNCSIFHKKYAVVGKQYPCYYSTVEPALVIVPIG
MAEEAGKESSREKLLFYTTaffillaifslfgflflVPFVIEPACTTIMREFDEVPATCETIQVENLRGASNCSWTSCREGCTREIYECTQITVSYKVSVNTSVQSTITAQSLRLYNRFRRAVLGEDDVLLPSFEDNFLETPAIPEGNSSEWDFVGAKFFPNVKGCGYPPYLNCSIFHKKYAVVGKQYPCYYSTVEPALVIVPIG
*************LLFYTTAFFILLAIFSLFGFLFLVPFVIEPACTTIMREFDEVPATCETIQVENLRGASNCSWTSCREGCTREIYECTQITVSYKVSVNTSVQSTITAQSLRLYNRFRRAVLGEDDVLLPSFEDNFLETPAIPEGNSSEWDFVGAKFFPNVKGCGYPPYLNCSIFHKKYAVVGKQYPCYYSTVEPALVIVP**
***********EKLLFYTTAFFILLAIFSLFGFLFLVPFVIEPACTTIMREFDEVPATCETIQVENLRGASNCSWTSCREGCTREIYECTQITVSYKVSVNTSVQSTITAQSLRLYNRFRRAVLGEDDVLLPSFEDNFLET*****GNSSEWDFVGAKFFPNVKGCGYPPYLNCSIFHKKYAVVGKQYPCYYSTVEPALVIVPIG
***********EKLLFYTTAFFILLAIFSLFGFLFLVPFVIEPACTTIMREFDEVPATCETIQVENLRGASNCSWTSCREGCTREIYECTQITVSYKVSVNTSVQSTITAQSLRLYNRFRRAVLGEDDVLLPSFEDNFLETPAIPEGNSSEWDFVGAKFFPNVKGCGYPPYLNCSIFHKKYAVVGKQYPCYYSTVEPALVIVPIG
******KESSREKLLFYTTAFFILLAIFSLFGFLFLVPFVIEPACTTIMREFDEVPATCETIQVENLRGASNCSWTSCREGCTREIYECTQITVSYKVSVN****STITAQSLR****FRRAVLGED*****SFEDNFLETPAIPEGNSSEWDFVGAKFFPNVKGCGYPPYLNCSIFHKKYAVVGKQYPCYYSTVEPALVIVPIG
ooooooooooooooHHHHHHHHHHHHHHHHHHHHHHHiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
iiiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHHHHHoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
iiiiiiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHHHHHHoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
SSSSSSSSSSSSSSSSSSSSiiHHHHHHHHHHHHHHHHHHHHHHHoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
iiiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHHHHHHHHHoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
MAEEAGKESSREKLLFYTTAFFILLAIFSLFGFLFLVPFVIEPACTTIMREFDEVPATCETIQVENLRGASNCSWTSCREGCTREIYECTQITVSYKVSVNTSVQSTITAQSLRLYNRFRRAVLGEDDVLLPSFEDNFLETPAIPEGNSSEWDFVGAKFFPNVKGCGYPPYLNCSIFHKKYAVVGKQYPCYYSTVEPALVIVPIG
no confident homologs detected

Close Homologs for Annotation Transfer

Close Homologs in SWISS-PROT Database Detected by BLAST ?

ID ?Alignment graph ?Length ? Definition ? RBH(Q2H) ? RBH(H2Q) ? Q cover ? H cover ? Identity ? E-value ?
Query205 2.2.26 [Sep-21-2011]
P48613 452 Protein tipE OS=Drosophil yes N/A 0.980 0.444 0.426 2e-50
>sp|P48613|TIPE_DROME Protein tipE OS=Drosophila melanogaster GN=tipE PE=2 SV=1 Back     alignment and function desciption
 Score =  198 bits (503), Expect = 2e-50,   Method: Compositional matrix adjust.
 Identities = 113/265 (42%), Positives = 146/265 (55%), Gaps = 64/265 (24%)

Query: 1   MAEEAGKESSREKLLFYTTAFFILLAIFSLFGFLFLVPFVIEPACTTIMREFDEVPATCE 60
           M +E  K + +EKLLFYTTAFFILL  FSLF FLFLVPFVIEPA TTI  +F+EVPA CE
Sbjct: 1   MGDEQDKRTGKEKLLFYTTAFFILLGTFSLFAFLFLVPFVIEPAFTTIFMQFEEVPALCE 60

Query: 61  TIQVENLRGASNCSWTSCREGCTREIYECTQITVSYKVSV-NTSVQSTITAQSLRLY--- 116
           T   E   GA NCSW+SCREGCT++IY CTQI V+Y++++ N + +   T   + L    
Sbjct: 61  TYDTEIYYGAKNCSWSSCREGCTKDIYTCTQIRVNYRLNLYNFTDEFNFTEYHINLKEAE 120

Query: 117 ---------NRFRRAVL--------------------------------GEDDVLLPSFE 135
                    +R+ RA+                                 G +  L+   E
Sbjct: 121 RILPPVKRTDRYERALRSDYEYDNLGGGTGLDIDLGAGRMEQLNFGDADGSNGYLIEDSE 180

Query: 136 DN----------------FLETPAIPEG---NSSEWDFVGAKFFPNVKGCGYPPYLNCSI 176
           D                 F E   + EG   N S + +VGA+ FPNVKGCGYPP LNC+I
Sbjct: 181 DTRGLSASGTLISDERRPFDEISELNEGLMGNRSMYYYVGARLFPNVKGCGYPPMLNCTI 240

Query: 177 FHKKYAVVGKQYPCYYSTVEPALVI 201
           + K+Y  +G ++PCYYS V+P+LVI
Sbjct: 241 WLKRYTKIGMKFPCYYSKVDPSLVI 265




Enhances para sodium channel function. Required during pupal development to rescue adult paralysis and also protects adult flys against heat-induced lethality.
Drosophila melanogaster (taxid: 7227)

Close Homologs in the Non-Redundant Database Detected by BLAST ?

GI ?Alignment Graph ?Length ? Definition ? Q cover ? H cover ? Identity ? E-value ?
Query205
380028645 356 PREDICTED: protein tipE-like [Apis flore 0.970 0.558 0.517 8e-57
340709652 356 PREDICTED: uncharacterized protein C21or 0.980 0.564 0.513 2e-56
322802528 331 hypothetical protein SINV_11441 [Solenop 0.965 0.598 0.525 1e-54
307200251 457 Protein tipE [Harpegnathos saltator] 0.951 0.426 0.517 3e-54
307185332 370 Protein tipE [Camponotus floridanus] 0.970 0.537 0.532 5e-54
357622439 320 hypothetical protein KGM_08287 [Danaus p 0.917 0.587 0.548 2e-53
345487841 351 PREDICTED: protein tipE-like [Nasonia vi 0.965 0.564 0.521 1e-52
242020098 393 hypothetical protein Phum_PHUM488040 [Pe 0.960 0.501 0.448 8e-49
194866319 452 GG15201 [Drosophila erecta] gi|195491664 0.980 0.444 0.426 8e-49
17737531 452 temperature-induced paralytic E, isoform 0.980 0.444 0.426 1e-48
>gi|380028645|ref|XP_003698004.1| PREDICTED: protein tipE-like [Apis florea] Back     alignment and taxonomy information
 Score =  225 bits (574), Expect = 8e-57,   Method: Compositional matrix adjust.
 Identities = 116/224 (51%), Positives = 145/224 (64%), Gaps = 25/224 (11%)

Query: 1   MAEEAGKESSREKLLFYTTAFFILLAIFSLFGFLFLVPFVIEPACTTIMREFDEVPATCE 60
           MAEE  K++  +KLLFYTTAFFILL+ FSLF FLFLVPFVI+PA TTI  +FD  PA C 
Sbjct: 1   MAEEKEKQTFLQKLLFYTTAFFILLSTFSLFAFLFLVPFVIDPAFTTIFMQFDTRPAECI 60

Query: 61  TIQVENLRGASNCSWTSCREGCTREIYECTQITVSYKVSVNTSVQSTITAQSLRLYN--- 117
           T+ VE+ RG SNCSWTSCREGCT+E+Y+CTQI V+YK+  NTS  S    +         
Sbjct: 61  TVNVESRRGTSNCSWTSCREGCTKELYDCTQIRVNYKLPTNTSEDSDGQGEGGGAVGGVE 120

Query: 118 -----------RFRRAVLGEDDVLLPSFEDNFLET---------PAIPEGNSSEWDFVGA 157
                      R+ R++   D V     +++F E          P    GN SEW F GA
Sbjct: 121 DDEDSTTMEKPRYDRSLREYDYV--EDLDEDFAEDDEAGLPKPFPTGLMGNDSEWYFTGA 178

Query: 158 KFFPNVKGCGYPPYLNCSIFHKKYAVVGKQYPCYYSTVEPALVI 201
           K FPNVKGCGYPP LNCSIF+++YA++G+ + CYYS V+P +VI
Sbjct: 179 KLFPNVKGCGYPPMLNCSIFYRQYAIIGQNFSCYYSKVDPGIVI 222




Source: Apis florea

Species: Apis florea

Genus: Apis

Family: Apidae

Order: Hymenoptera

Class: Insecta

Phylum: Arthropoda

Superkingdom: Eukaryota

>gi|340709652|ref|XP_003393417.1| PREDICTED: uncharacterized protein C21orf59-like isoform 1 [Bombus terrestris] gi|350419483|ref|XP_003492196.1| PREDICTED: protein tipE-like [Bombus impatiens] Back     alignment and taxonomy information
>gi|322802528|gb|EFZ22843.1| hypothetical protein SINV_11441 [Solenopsis invicta] Back     alignment and taxonomy information
>gi|307200251|gb|EFN80530.1| Protein tipE [Harpegnathos saltator] Back     alignment and taxonomy information
>gi|307185332|gb|EFN71413.1| Protein tipE [Camponotus floridanus] Back     alignment and taxonomy information
>gi|357622439|gb|EHJ73913.1| hypothetical protein KGM_08287 [Danaus plexippus] Back     alignment and taxonomy information
>gi|345487841|ref|XP_003425769.1| PREDICTED: protein tipE-like [Nasonia vitripennis] Back     alignment and taxonomy information
>gi|242020098|ref|XP_002430493.1| hypothetical protein Phum_PHUM488040 [Pediculus humanus corporis] gi|212515650|gb|EEB17755.1| hypothetical protein Phum_PHUM488040 [Pediculus humanus corporis] Back     alignment and taxonomy information
>gi|194866319|ref|XP_001971855.1| GG15201 [Drosophila erecta] gi|195491664|ref|XP_002093659.1| GE21421 [Drosophila yakuba] gi|190653638|gb|EDV50881.1| GG15201 [Drosophila erecta] gi|194179760|gb|EDW93371.1| GE21421 [Drosophila yakuba] Back     alignment and taxonomy information
>gi|17737531|ref|NP_523920.1| temperature-induced paralytic E, isoform A [Drosophila melanogaster] gi|24657334|ref|NP_728952.1| temperature-induced paralytic E, isoform B [Drosophila melanogaster] gi|1351253|sp|P48613.1|TIPE_DROME RecName: Full=Protein tipE; AltName: Full=Temperature-induced paralytic E gi|1017710|gb|AAC48307.1| tipE [Drosophila melanogaster] gi|7292453|gb|AAF47857.1| temperature-induced paralytic E, isoform A [Drosophila melanogaster] gi|16648182|gb|AAL25356.1| GH18645p [Drosophila melanogaster] gi|23092982|gb|AAN11591.1| temperature-induced paralytic E, isoform B [Drosophila melanogaster] gi|220956674|gb|ACL90880.1| tipE-PA [synthetic construct] Back     alignment and taxonomy information

Prediction of Gene Ontology (GO) Terms

Close Homologs with Gene Ontology terms Detected by BLAST ?

ID ? Alignment graph ? Length ? Definition ? Q cover ? H cover ? Identity ? E-value ?
Query205
FB|FBgn0003710 452 tipE "temperature-induced para 0.560 0.254 0.474 4.6e-44
FB|FBgn0035505313 Teh2 "tipE homolog 2" [Drosoph 0.458 0.300 0.382 2.2e-28
FB|FBgn0037766279 Teh1 "tipE homolog 1" [Drosoph 0.502 0.369 0.355 1.7e-25
FB|FBgn0003710 tipE "temperature-induced paralytic E" [Drosophila melanogaster (taxid:7227)] Back     alignment and assigned GO terms
 Score = 282 (104.3 bits), Expect = 4.6e-44, Sum P(2) = 4.6e-44
 Identities = 55/116 (47%), Positives = 71/116 (61%)

Query:     1 MAEEAGKESSREKLLFYTTXXXXXXXXXXXXXXXXXVPFVIEPACTTIMREFDEVPATCE 60
             M +E  K + +EKLLFYTT                 VPFVIEPA TTI  +F+EVPA CE
Sbjct:     1 MGDEQDKRTGKEKLLFYTTAFFILLGTFSLFAFLFLVPFVIEPAFTTIFMQFEEVPALCE 60

Query:    61 TIQVENLRGASNCSWTSCREGCTREIYECTQITVSYKVSV-NTSVQSTITAQSLRL 115
             T   E   GA NCSW+SCREGCT++IY CTQI V+Y++++ N + +   T   + L
Sbjct:    61 TYDTEIYYGAKNCSWSSCREGCTKDIYTCTQIRVNYRLNLYNFTDEFNFTEYHINL 116


GO:0017080 "sodium channel regulator activity" evidence=IDA
GO:0005887 "integral to plasma membrane" evidence=NAS;IDA
GO:0034605 "cellular response to heat" evidence=IDA
GO:0002028 "regulation of sodium ion transport" evidence=IDA
GO:0005886 "plasma membrane" evidence=ISS;IDA;TAS
GO:0045433 "male courtship behavior, veined wing generated song production" evidence=IMP
GO:0005248 "voltage-gated sodium channel activity" evidence=ISS;TAS
GO:0006814 "sodium ion transport" evidence=NAS
FB|FBgn0035505 Teh2 "tipE homolog 2" [Drosophila melanogaster (taxid:7227)] Back     alignment and assigned GO terms
FB|FBgn0037766 Teh1 "tipE homolog 1" [Drosophila melanogaster (taxid:7227)] Back     alignment and assigned GO terms

Prediction of Enzyme Commission (EC) Number

EC Number Prediction by Annotation Transfer from SWISS-PROT Entries ?

No confident hit for EC number transfering in SWISSPROT detected by BLAST

EC Number Prediction by EFICAz Software ?

No EC number assignment, probably not an enzyme!


Prediction of Functionally Associated Proteins


Conserved Domains and Related Protein Families

Conserved Domains Detected by RPS-BLAST ?

No hit with e-value below 0.005

Conserved Domains Detected by HHsearch ?

ID ?Alignment Graph ?Length ? Definition ? Probability ?
Query 205
PF03185201 CaKB: Calcium-activated potassium channel, beta su 98.35
>PF03185 CaKB: Calcium-activated potassium channel, beta subunit; InterPro: IPR003930 Potassium channels are the most diverse group of the ion channel family [, ] Back     alignment and domain information
Probab=98.35  E-value=8e-08  Score=82.54  Aligned_cols=120  Identities=27%  Similarity=0.560  Sum_probs=0.0

Q ss_pred             HHHHHHhhhhhceeecchhhhhhcccccccceeEEEeeeeccCCCCCcccccccccc-ccccCeeEEEEEeEeccCcccc
Q psy5734          27 IFSLFGFLFLVPFVIEPACTTIMREFDEVPATCETIQVENLRGASNCSWTSCREGCT-REIYECTQITVSYKVSVNTSVQ  105 (205)
Q Consensus        27 v~S~~AfLfLvp~vvdPA~~ti~~~f~~~Pv~C~Tt~~~~~~G~~NCsWsSCrEgCt-k~~~~C~QI~Vnyr~~~~~n~~  105 (205)
                      ++|+.+++.|--.++-|++...+    .++..|++.+.....-.-+|+- ||+--|- ...|.|-||+|||.....    
T Consensus        24 ~~svlm~~vlGitiv~P~l~s~~----~~et~Ctvl~s~i~~~~v~Cs~-~cg~~c~~~s~yPCLqV~Vn~t~sg~----   94 (201)
T PF03185_consen   24 ICSVLMLFVLGITIVKPYLKSLW----FEETNCTVLSSHIVGEWVDCSF-SCGSDCRGVSKYPCLQVFVNYTHSGQ----   94 (201)
T ss_dssp             --------------------------------------------------------------------------------
T ss_pred             HHHHHHHHHHHHhccchhhhhcc----cccceEEEEEEEeecccccccc-cCCCCCCCcCCCCceEEEEEecCCCc----
Confidence            45666777777788899987766    4789999998876332233331 3444443 467899999999965320    


Q ss_pred             chhhHHhHhhHHhhhhhccCCCCccCCcccCCCCCCCCCCCCCCCcccccccEEeecccCCCCCCccch-----------
Q psy5734         106 STITAQSLRLYNRFRRAVLGEDDVLLPSFEDNFLETPAIPEGNSSEWDFVGAKFFPNVKGCGYPPYLNC-----------  174 (205)
Q Consensus       106 ~~~~~~~~r~~~~~~r~~~d~~~~~~~~~~~~~~~~~~~l~~~~s~w~~~~a~L~vNvkGCGYPP~vnC-----------  174 (205)
                                     +++.      -.+                      |..+..|-| |-|-|  .|           
T Consensus        95 ---------------~a~L------~~~----------------------E~~l~~n~k-CsY~P--~C~~d~~~~~~~V  128 (201)
T PF03185_consen   95 ---------------TALL------HHD----------------------EETLDSNPK-CSYIP--KCHRDRQDNRAEV  128 (201)
T ss_dssp             --------------------------------------------------------------------------------
T ss_pred             ---------------eEEE------EEc----------------------hHhhccCCc-ceecC--cccccHHHHHHHH
Confidence                           1111      111                      222233444 88866  23           


Q ss_pred             hHHHHhhccC-CCcceeeeecCC-CceEe
Q psy5734         175 SIFHKKYAVV-GKQYPCYYSTVE-PALVI  201 (205)
Q Consensus       175 s~F~k~Y~~~-G~~FpCyYSr~~-p~~Vi  201 (205)
                      .+|-+.|+.. |..|||||+-.+ |+-||
T Consensus       129 ~~~~~~~~~~~gq~f~Cfy~P~~~~~~Vi  157 (201)
T PF03185_consen  129 EDFQENFGQQNGQTFPCFYDPDNQPEDVI  157 (201)
T ss_dssp             -----------------------------
T ss_pred             HHHHHHhhhccCcceeeeecCCCCcceEE
Confidence            3677888888 999999999997 45555



They are important in shaping the action potential, and in neuronal excitability and plasticity []. The potassium channel family is composed of several functionally distinct isoforms, which can be broadly separated into 2 groups []: the practically non-inactivating 'delayed' group and the rapidly inactivating 'transient' group. These are all highly similar proteins, with only small amino acid changes causing the diversity of the voltage-dependent gating mechanism, channel conductance and toxin binding properties. Each type of K+ channel is activated by different signals and conditions depending on their type of regulation: some open in response to depolarisation of the plasma membrane; others in response to hyperpolarisation or an increase in intracellular calcium concentration; some can be regulated by binding of a transmitter, together with intracellular kinases; while others are regulated by GTP-binding proteins or other second messengers []. In eukaryotic cells, K+ channels are involved in neural signalling and generation of the cardiac rhythm, act as effectors in signal transduction pathways involving G protein-coupled receptors (GPCRs) and may have a role in target cell lysis by cytotoxic T-lymphocytes []. In prokaryotic cells, they play a role in the maintenance of ionic homeostasis []. All K+ channels discovered so far possess a core of alpha subunits, each comprising either one or two copies of a highly conserved pore loop domain (P-domain). The P-domain contains the sequence (T/SxxTxGxG), which has been termed the K+ selectivity sequence. In families that contain one P-domain, four subunits assemble to form a selective pathway for K+ across the membrane. However, it remains unclear how the 2 P-domain subunits assemble to form a selective pore. The functional diversity of these families can arise through homo- or hetero-associations of alpha subunits or association with auxiliary cytoplasmic beta subunits. K+ channel subunits containing one pore domain can be assigned into one of two superfamilies: those that possess six transmembrane (TM) domains and those that possess only two TM domains. The six TM domain superfamily can be further subdivided into conserved gene families: the voltage-gated (Kv) channels; the KCNQ channels (originally known as KvLQT channels); the EAG-like K+ channels; and three types of calcium (Ca)-activated K+ channels (BK, IK and SK) []. The 2TM domain family comprises inward-rectifying K+ channels. In addition, there are K+ channel alpha-subunits that possess two P-domains. These are usually highly regulated K+ selective leak channels. Ca2+-activated K+ channels are a diverse group of channels that are activated by an increase in intracellular Ca2+ concentration. They are found in the majority of nerve cells, where they modulate cell excitability and action potential. Three types of Ca2+-activated K+ channel have been characterised, termed small-conductance (SK), intermediate conductance (IK) and large conductance (BK) respectively []. BK channels (also referred to as maxi-K channels) are widely expressed in the body, being found in glandular tissue, smooth and skeletal muscle, as well as in neural tissues. They have been demonstrated to regulate arteriolar and airway diameter, and also neurotransmitter release. Each channel complex is thought to be composed of 2 types of subunit: the pore- forming (alpha) subunits and smaller accessory (beta) subunits. The beta subunit (which is thought to possess 2 TM domains) increases the Ca2+ sensitivity of the BK channel []. It does this by enhancing the time spent by the channel in burst-like open states. However, it has little effect on the durations of closed intervals between bursts, or on the numbers of open and closed states entered during gating []. ; GO: 0015269 calcium-activated potassium channel activity, 0006813 potassium ion transport, 0016020 membrane; PDB: 1JO6_A.


Homologous Structure Templates

Structure Templates Detected by BLAST ?

No homologous structure with e-value below 0.005

Structure Templates Detected by RPS-BLAST ?

No hit with e-value below 0.005

Structure Templates Detected by HHsearch ?

No hit with probability above 80.00


Homologous Structure Domains

Structure Domains Detected by RPS-BLAST ?

No hit with e-value below 0.005

Homologous Domains Detected by HHsearch ?

No hit with probability above 80.00