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UniProtKB - Q03041 (CNGA2_BOVIN)
Protein
Cyclic nucleotide-gated olfactory channel
Gene
CNGA2
Organism
Bos taurus (Bovine)
Status
Functioni
Odorant signal transduction is probably mediated by a G-protein coupled cascade using cAMP as second messenger. The olfactory channel can be shown to be activated by cyclic nucleotides which leads to a depolarization of olfactory sensory neurons.
Miscellaneous
The olfactory channel is activated by both cAMP and cGMP at similar concentrations, whereas the cGMP-gated channel is much less sensitive to cAMP.
Sites
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Binding sitei | 521 | 3',5'-cAMPBy similarity | 1 | |
Binding sitei | 536 | 3',5'-cAMPBy similarity | 1 |
Regions
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Nucleotide bindingi | 462 – 584 | 3',5'-cAMPBy similarityAdd BLAST | 123 |
GO - Molecular functioni
- calmodulin binding Source: UniProtKB-KW
- cAMP binding Source: UniProtKB-KW
- ion channel activity Source: AgBase
GO - Biological processi
- response to stimulus Source: UniProtKB-KW
- sensory perception of smell Source: AgBase
Keywordsi
Molecular function | Calmodulin-binding, Ion channel, Ligand-gated ion channel |
Biological process | Ion transport, Olfaction, Sensory transduction, Transport |
Ligand | cAMP, cAMP-binding, Nucleotide-binding |
Names & Taxonomyi
Protein namesi | Recommended name: Cyclic nucleotide-gated olfactory channelAlternative name(s): Cyclic nucleotide-gated cation channel 2 Cyclic nucleotide-gated channel alpha-2 Short name: CNG channel alpha-2 Short name: CNG-2 Short name: CNG2 |
Gene namesi | Name:CNGA2 Synonyms:CNCG2 |
Organismi | Bos taurus (Bovine) |
Taxonomic identifieri | 9913 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Laurasiatheria › Artiodactyla › Ruminantia › Pecora › Bovidae › Bovinae › Bos |
Proteomesi |
|
Subcellular locationi
Other locations
Other locations
- integral component of membrane Source: UniProtKB-KW
Topology
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Topological domaini | 1 – 140 | CytoplasmicSequence analysisAdd BLAST | 140 | |
Transmembranei | 141 – 160 | Helical; Name=H1Sequence analysisAdd BLAST | 20 | |
Topological domaini | 161 – 173 | ExtracellularSequence analysisAdd BLAST | 13 | |
Transmembranei | 174 – 192 | Helical; Name=H2Sequence analysisAdd BLAST | 19 | |
Topological domaini | 193 – 216 | CytoplasmicSequence analysisAdd BLAST | 24 | |
Transmembranei | 217 – 236 | Helical; Name=H3Sequence analysisAdd BLAST | 20 | |
Topological domaini | 237 – 274 | ExtracellularSequence analysisAdd BLAST | 38 | |
Transmembranei | 275 – 297 | Helical; Name=H4Sequence analysisAdd BLAST | 23 | |
Topological domaini | 298 – 349 | CytoplasmicSequence analysisAdd BLAST | 52 | |
Transmembranei | 350 – 369 | Helical; Name=H5Sequence analysisAdd BLAST | 20 | |
Topological domaini | 370 – 453 | ExtracellularSequence analysisAdd BLAST | 84 | |
Transmembranei | 454 – 474 | Helical; Name=H6Sequence analysisAdd BLAST | 21 | |
Topological domaini | 475 – 663 | CytoplasmicSequence analysisAdd BLAST | 189 |
Keywords - Cellular componenti
MembranePTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000219311 | 1 – 663 | Cyclic nucleotide-gated olfactory channelAdd BLAST | 663 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Glycosylationi | 379 | N-linked (GlcNAc...) asparagineCurated | 1 |
Keywords - PTMi
GlycoproteinProteomic databases
PaxDbi | Q03041 |
Expressioni
Tissue specificityi
Olfactory neurons.
Interactioni
Subunit structurei
Heterotetramer composed of two subunits of CNGA2, one of CNGA4 and one of CNGB1b. The complex forms the cyclic nucleotide-gated (CNG) channel of olfactory sensory neurons (By similarity).
By similarityGO - Molecular functioni
- calmodulin binding Source: UniProtKB-KW
Protein-protein interaction databases
IntActi | Q03041, 1 interactor |
MINTi | Q03041 |
STRINGi | 9913.ENSBTAP00000027618 |
Structurei
Secondary structure
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details3D structure databases
AlphaFoldDBi | Q03041 |
BMRBi | Q03041 |
SMRi | Q03041 |
ModBasei | Search... |
PDBe-KBi | Search... |
Miscellaneous databases
EvolutionaryTracei | Q03041 |
Family & Domainsi
Region
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Regioni | 1 – 61 | DisorderedSequence analysisAdd BLAST | 61 | |
Regioni | 640 – 663 | DisorderedSequence analysisAdd BLAST | 24 |
Coiled coil
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Coiled coili | 597 – 640 | By similarityAdd BLAST | 44 |
Compositional bias
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Compositional biasi | 1 – 17 | Polar residuesSequence analysisAdd BLAST | 17 | |
Compositional biasi | 23 – 38 | Basic and acidic residuesSequence analysisAdd BLAST | 16 | |
Compositional biasi | 39 – 55 | Polar residuesSequence analysisAdd BLAST | 17 |
Domaini
The C-terminal coiled-coil domain mediates trimerization of CNGA subunits.By similarity
Sequence similaritiesi
Belongs to the cyclic nucleotide-gated cation channel (TC 1.A.1.5) family. CNGA2 subfamily. [View classification]Curated
Keywords - Domaini
Coiled coil, Transmembrane, Transmembrane helixPhylogenomic databases
eggNOGi | KOG0500, Eukaryota |
InParanoidi | Q03041 |
OrthoDBi | 1073751at2759 |
Family and domain databases
CDDi | cd00038, CAP_ED, 1 hit |
Gene3Di | 2.60.120.10, 1 hit |
IDEALi | IID50188 |
InterProi | View protein in InterPro IPR032406, CLZ_dom IPR018490, cNMP-bd-like IPR018488, cNMP-bd_CS IPR000595, cNMP-bd_dom IPR005821, Ion_trans_dom IPR014710, RmlC-like_jellyroll |
Pfami | View protein in Pfam PF16526, CLZ, 1 hit PF00027, cNMP_binding, 1 hit PF00520, Ion_trans, 1 hit |
SMARTi | View protein in SMART SM00100, cNMP, 1 hit |
SUPFAMi | SSF51206, SSF51206, 1 hit |
PROSITEi | View protein in PROSITE PS00888, CNMP_BINDING_1, 1 hit PS00889, CNMP_BINDING_2, 1 hit PS50042, CNMP_BINDING_3, 1 hit |
i Sequence
Sequence statusi: Complete.
Q03041-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MTEKANGVKS SPANNHNHHA PPAIKASGKD DHRASSRPQS AAADDTSSEL
60 70 80 90 100
QQLAEMDAPQ QRRGGFRRIA RLVGVLREWA YRNFREEEPR PDSFLERFRG
110 120 130 140 150
PELHTVTTQQ GDGKGDKDGE GKGTKKKFEL FVLDPAGDWY YRWLFLIALP
160 170 180 190 200
VLYNWCLLVA RACFSDLQKG YYIVWLVLDY VSDVVYIADL FIRLRTGFLE
210 220 230 240 250
QGLLVKDTKK LRDNYIHTMQ FKLDVASIIP TDLIYFAVGI HNPEVRFNRL
260 270 280 290 300
LHFARMFEFF DRTETRTSYP NIFRISNLIL YILIIIHWNA CIYYAISKSI
310 320 330 340 350
GFGVDTWVYP NITDPEYGYL SREYIYCLYW STLTLTTIGE TPPPVKDEEY
360 370 380 390 400
LFVIFDFLIG VLIFATIVGN VGSMISNMNA TRAEFQAKID AVKHYMQFRK
410 420 430 440 450
VSKEMEAKVI RWFDYLWTNK KSVDEREVLK NLPAKLRAEI AINVHLSTLK
460 470 480 490 500
KVRIFQDCEA GLLVELVLKL RPQVFSPGDY ICRKGDIGKE MYIIKEGKLA
510 520 530 540 550
VVADDGVTQY ALLSAGSCFG EISILNIKGS KMGNRRTANI RSLGYSDLFC
560 570 580 590 600
LSKDDLMEAV TEYPDAKRVL EERGREILMK EGLLDENEVA ASMEVDVQEK
610 620 630 640 650
LEQLETNMDT LYTRFARLLA EYTGAQQKLK QRITVLETKM KQNNEDDSLS
660
DGMNSPEPPA EKP
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | X55010 mRNA Translation: CAA38754.1 |
PIRi | S11521 |
RefSeqi | NP_001001139.1, NM_001001139.2 |
Genome annotation databases
GeneIDi | 407172 |
KEGGi | bta:407172 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | X55010 mRNA Translation: CAA38754.1 |
PIRi | S11521 |
RefSeqi | NP_001001139.1, NM_001001139.2 |
3D structure databases
Select the link destinations: PDBei RCSB PDBi PDBji Links Updated | PDB entry | Method | Resolution (Å) | Chain | Positions | PDBsum |
1SY9 | NMR | - | B | 60-85 | [»] | |
AlphaFoldDBi | Q03041 | |||||
BMRBi | Q03041 | |||||
SMRi | Q03041 | |||||
ModBasei | Search... | |||||
PDBe-KBi | Search... |
Protein-protein interaction databases
IntActi | Q03041, 1 interactor |
MINTi | Q03041 |
STRINGi | 9913.ENSBTAP00000027618 |
Proteomic databases
PaxDbi | Q03041 |
Genome annotation databases
GeneIDi | 407172 |
KEGGi | bta:407172 |
Organism-specific databases
CTDi | 1260 |
Phylogenomic databases
eggNOGi | KOG0500, Eukaryota |
InParanoidi | Q03041 |
OrthoDBi | 1073751at2759 |
Miscellaneous databases
EvolutionaryTracei | Q03041 |
Family and domain databases
CDDi | cd00038, CAP_ED, 1 hit |
Gene3Di | 2.60.120.10, 1 hit |
IDEALi | IID50188 |
InterProi | View protein in InterPro IPR032406, CLZ_dom IPR018490, cNMP-bd-like IPR018488, cNMP-bd_CS IPR000595, cNMP-bd_dom IPR005821, Ion_trans_dom IPR014710, RmlC-like_jellyroll |
Pfami | View protein in Pfam PF16526, CLZ, 1 hit PF00027, cNMP_binding, 1 hit PF00520, Ion_trans, 1 hit |
SMARTi | View protein in SMART SM00100, cNMP, 1 hit |
SUPFAMi | SSF51206, SSF51206, 1 hit |
PROSITEi | View protein in PROSITE PS00888, CNMP_BINDING_1, 1 hit PS00889, CNMP_BINDING_2, 1 hit PS50042, CNMP_BINDING_3, 1 hit |
MobiDBi | Search... |
Entry informationi
Entry namei | CNGA2_BOVIN | |
Accessioni | Q03041Primary (citable) accession number: Q03041 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | July 1, 1993 |
Last sequence update: | July 1, 1993 | |
Last modified: | May 25, 2022 | |
This is version 138 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Chordata Protein Annotation Program |
Miscellaneousi
Keywords - Technical termi
3D-structure, Reference proteomeDocuments
- PDB cross-references
Index of Protein Data Bank (PDB) cross-references - SIMILARITY comments
Index of protein domains and families