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Protein

Acetylcholine receptor subunit alpha

Gene

CHRNA1

Organism
Torpedo marmorata (Marbled electric ray)
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Experimental evidence at protein leveli

Functioni

After binding acetylcholine, the AChR responds by an extensive change in conformation that affects all subunits and leads to opening of an ion-conducting channel across the plasma membrane.

GO - Molecular functioni

Complete GO annotation...

Keywords - Molecular functioni

Ion channel, Ligand-gated ion channel, Receptor

Keywords - Biological processi

Ion transport, Transport

Names & Taxonomyi

Protein namesi
Recommended name:
Acetylcholine receptor subunit alpha
Gene namesi
Name:CHRNA1
OrganismiTorpedo marmorata (Marbled electric ray)
Taxonomic identifieri7788 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataChondrichthyesElasmobranchiiBatoideaTorpediniformesTorpedinidaeTorpedo

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Topological domaini25 – 234ExtracellularAdd BLAST210
Transmembranei235 – 259HelicalAdd BLAST25
Transmembranei267 – 285HelicalAdd BLAST19
Transmembranei301 – 320HelicalAdd BLAST20
Topological domaini321 – 432CytoplasmicAdd BLAST112
Transmembranei433 – 451HelicalAdd BLAST19

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cell junction, Cell membrane, Membrane, Postsynaptic cell membrane, Synapse

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 24Add BLAST24
ChainiPRO_000000031125 – 461Acetylcholine receptor subunit alphaAdd BLAST437

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi152 ↔ 166
Glycosylationi165N-linked (GlcNAc...)Sequence analysis1
Disulfide bondi216 ↔ 217Associated with receptor activation

Keywords - PTMi

Disulfide bond, Glycoprotein

Proteomic databases

PRIDEiP02711.

Interactioni

Subunit structurei

Pentamer of two alpha chains, and one each of the beta, delta, and gamma chains.1 Publication

Structurei

Secondary structure

1461
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Beta strandi210 – 215Combined sources6
Beta strandi218 – 220Combined sources3
Beta strandi222 – 225Combined sources4

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1L4WNMR-B206-226[»]
1LJZNMR-B206-226[»]
1OEDelectron microscopy4.00A/D235-461[»]
2BG9electron microscopy4.00A/D25-461[»]
4AQ5electron microscopy6.20A/D1-461[»]
4AQ9electron microscopy6.20A/D1-461[»]
4BOGelectron microscopy50.002/A/D/F/I/K/N/P/S/U/X/Z1-461[»]
4BOIelectron microscopy41.00A/D1-461[»]
4BONelectron microscopy40.00A/D1-461[»]
4BOOelectron microscopy42.00A/D1-461[»]
4BORelectron microscopy42.00A/D1-461[»]
4BOTelectron microscopy42.00A/D1-461[»]
ProteinModelPortaliP02711.
SMRiP02711.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP02711.

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Signal, Transmembrane, Transmembrane helix

Phylogenomic databases

HOVERGENiHBG003756.

Family and domain databases

Gene3Di1.20.120.370. 2 hits.
2.70.170.10. 1 hit.
InterProiIPR027361. Acetylcholine_rcpt_TM.
IPR006202. Neur_chan_lig-bd.
IPR006201. Neur_channel.
IPR006029. Neurotrans-gated_channel_TM.
IPR018000. Neurotransmitter_ion_chnl_CS.
IPR002394. Nicotinic_acetylcholine_rcpt.
[Graphical view]
PANTHERiPTHR18945. PTHR18945. 1 hit.
PfamiPF02931. Neur_chan_LBD. 1 hit.
PF02932. Neur_chan_memb. 2 hits.
[Graphical view]
PRINTSiPR00254. NICOTINICR.
PR00252. NRIONCHANNEL.
SUPFAMiSSF63712. SSF63712. 1 hit.
SSF90112. SSF90112. 1 hit.
TIGRFAMsiTIGR00860. LIC. 1 hit.
PROSITEiPS00236. NEUROTR_ION_CHANNEL. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

P02711-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MILCSYWHVG LVLLLFSCCG LVLGSEHETR LVANLLENYN KVIRPVEHHT
60 70 80 90 100
HFVDITVGLQ LIQLINVDEV NQIVETNVRL RQQWIDVRLR WNPADYGGIK
110 120 130 140 150
KIRLPSDDVW LPDLVLYNNA DGDFAIVHMT KLLLDYTGKI MWTPPAIFKS
160 170 180 190 200
YCEIIVTHFP FDQQNCTMKL GIWTYDGTKV SISPESDRPD LSTFMESGEW
210 220 230 240 250
VMKDYRGWKH WVYYTCCPDT PYLDITYHFI MQRIPLYFVV NVIIPCLLFS
260 270 280 290 300
FLTVLVFYLP TDSGEKMTLS ISVLLSLTVF LLVIVELIPS TSSAVPLIGK
310 320 330 340 350
YMLFTMIFVI SSIIVTVVVI NTHHRSPSTH TMPQWVRKIF INTIPNVMFF
360 370 380 390 400
STMKRASKEK QENKIFADDI DISDISGKQV TGEVIFQTPL IKNPDVKSAI
410 420 430 440 450
EGVKYIAEHM KSDEESSNAA EEWKYVAMVI DHILLCVFML ICIIGTVSVF
460
AGRLIELSQE G
Length:461
Mass (Da):52,795
Last modified:July 21, 1986 - v1
Checksum:i5354B3F8451D4F8C
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti347V → L in AAA96704 (PubMed:6549423).Curated1
Sequence conflicti448S → C in AAA96704 (PubMed:6549423).Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
J00963 mRNA. No translation available.
M25893 mRNA. Translation: AAA96704.1.
M14807 mRNA. Translation: AAA49273.1.
PIRiA93440.
I50548.
I50549.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
J00963 mRNA. No translation available.
M25893 mRNA. Translation: AAA96704.1.
M14807 mRNA. Translation: AAA49273.1.
PIRiA93440.
I50548.
I50549.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1L4WNMR-B206-226[»]
1LJZNMR-B206-226[»]
1OEDelectron microscopy4.00A/D235-461[»]
2BG9electron microscopy4.00A/D25-461[»]
4AQ5electron microscopy6.20A/D1-461[»]
4AQ9electron microscopy6.20A/D1-461[»]
4BOGelectron microscopy50.002/A/D/F/I/K/N/P/S/U/X/Z1-461[»]
4BOIelectron microscopy41.00A/D1-461[»]
4BONelectron microscopy40.00A/D1-461[»]
4BOOelectron microscopy42.00A/D1-461[»]
4BORelectron microscopy42.00A/D1-461[»]
4BOTelectron microscopy42.00A/D1-461[»]
ProteinModelPortaliP02711.
SMRiP02711.
ModBaseiSearch...
MobiDBiSearch...

Proteomic databases

PRIDEiP02711.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Phylogenomic databases

HOVERGENiHBG003756.

Miscellaneous databases

EvolutionaryTraceiP02711.

Family and domain databases

Gene3Di1.20.120.370. 2 hits.
2.70.170.10. 1 hit.
InterProiIPR027361. Acetylcholine_rcpt_TM.
IPR006202. Neur_chan_lig-bd.
IPR006201. Neur_channel.
IPR006029. Neurotrans-gated_channel_TM.
IPR018000. Neurotransmitter_ion_chnl_CS.
IPR002394. Nicotinic_acetylcholine_rcpt.
[Graphical view]
PANTHERiPTHR18945. PTHR18945. 1 hit.
PfamiPF02931. Neur_chan_LBD. 1 hit.
PF02932. Neur_chan_memb. 2 hits.
[Graphical view]
PRINTSiPR00254. NICOTINICR.
PR00252. NRIONCHANNEL.
SUPFAMiSSF63712. SSF63712. 1 hit.
SSF90112. SSF90112. 1 hit.
TIGRFAMsiTIGR00860. LIC. 1 hit.
PROSITEiPS00236. NEUROTR_ION_CHANNEL. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiACHA_TORMA
AccessioniPrimary (citable) accession number: P02711
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 21, 1986
Last sequence update: July 21, 1986
Last modified: November 2, 2016
This is version 123 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.