Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Protein

Signal recognition particle receptor subunit alpha

Gene

SRPRA

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

Component of the SRP (signal recognition particle) receptor. Ensures, in conjunction with the signal recognition particle, the correct targeting of the nascent secretory proteins to the endoplasmic reticulum membrane system.

Regions

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Nucleotide bindingi425 – 4328GTPBy similarity
Nucleotide bindingi520 – 5245GTPBy similarity
Nucleotide bindingi588 – 5914GTPBy similarity

GO - Molecular functioni

  • GTPase activity Source: InterPro
  • GTP binding Source: UniProtKB-KW
  • poly(A) RNA binding Source: UniProtKB
  • signal recognition particle binding Source: ProtInc

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Receptor

Keywords - Ligandi

GTP-binding, Nucleotide-binding

Enzyme and pathway databases

ReactomeiR-HSA-1799339. SRP-dependent cotranslational protein targeting to membrane.
R-HSA-381038. XBP1(S) activates chaperone genes.

Names & Taxonomyi

Protein namesi
Recommended name:
Signal recognition particle receptor subunit alpha
Short name:
SR-alpha
Alternative name(s):
Docking protein alpha
Short name:
DP-alpha
Gene namesi
Name:SRPRAImported
Synonyms:SRPR
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
Proteomesi
  • UP000005640 Componenti: Chromosome 11

Organism-specific databases

HGNCiHGNC:11307. SRPRA.

Subcellular locationi

GO - Cellular componenti

  • endoplasmic reticulum Source: ProtInc
  • endoplasmic reticulum membrane Source: Reactome
  • extracellular exosome Source: UniProtKB
  • integral component of membrane Source: ProtInc
  • membrane Source: MGI
  • signal recognition particle receptor complex Source: ProtInc
Complete GO annotation...

Keywords - Cellular componenti

Endoplasmic reticulum, Membrane

Pathology & Biotechi

Organism-specific databases

PharmGKBiPA36131.

Polymorphism and mutation databases

BioMutaiSRPR.
DMDMi20455516.

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 638638Signal recognition particle receptor subunit alphaPRO_0000101213Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei177 – 1771PhosphoserineCombined sources
Modified residuei284 – 2841PhosphothreonineCombined sources
Modified residuei296 – 2961PhosphoserineCombined sources
Modified residuei297 – 2971PhosphoserineCombined sources
Modified residuei298 – 2981PhosphoserineCombined sources
Modified residuei473 – 4731PhosphoserineCombined sources
Modified residuei578 – 5781PhosphothreonineCombined sources

Keywords - PTMi

Phosphoprotein

Proteomic databases

EPDiP08240.
MaxQBiP08240.
PaxDbiP08240.
PeptideAtlasiP08240.
PRIDEiP08240.

PTM databases

iPTMnetiP08240.
PhosphoSiteiP08240.
SwissPalmiP08240.

Expressioni

Gene expression databases

BgeeiENSG00000182934.
CleanExiHS_SRPR.
GenevisibleiP08240. HS.

Organism-specific databases

HPAiHPA053860.

Interactioni

Subunit structurei

Heterodimer with SRPRB.1 Publication

Protein-protein interaction databases

BioGridi112612. 40 interactions.
IntActiP08240. 41 interactions.
MINTiMINT-1404634.
STRINGi9606.ENSP00000328023.

Structurei

Secondary structure

1
638
Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Beta strandi3 – 97Combined sources
Beta strandi12 – 198Combined sources
Turni20 – 223Combined sources
Helixi28 – 358Combined sources
Helixi37 – 393Combined sources
Beta strandi53 – 597Combined sources
Turni60 – 634Combined sources
Beta strandi64 – 718Combined sources
Helixi73 – 753Combined sources
Helixi76 – 9318Combined sources
Helixi95 – 995Combined sources
Beta strandi100 – 1023Combined sources
Helixi104 – 1074Combined sources
Helixi114 – 12714Combined sources

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
2FH5X-ray2.45A3-176[»]
2GO5electron microscopy7.4013-176[»]
5L3QX-ray3.20B/D1-638[»]
ProteinModelPortaliP08240.
SMRiP08240. Positions 1-130, 333-624.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP08240.

Family & Domainsi

Sequence similaritiesi

Belongs to the GTP-binding SRP family.Curated

Phylogenomic databases

eggNOGiKOG0781. Eukaryota.
COG0552. LUCA.
GeneTreeiENSGT00550000074936.
HOGENOMiHOG000201671.
HOVERGENiHBG047566.
InParanoidiP08240.
KOiK13431.
OMAiEEFMQKH.
OrthoDBiEOG091G05TG.
PhylomeDBiP08240.
TreeFamiTF106189.

Family and domain databases

Gene3Di3.40.50.300. 1 hit.
InterProiIPR003593. AAA+_ATPase.
IPR011012. Longin-like_dom.
IPR027417. P-loop_NTPase.
IPR007222. Sig_recog_particle_rcpt_asu_N.
IPR013822. Signal_recog_particl_SRP54_hlx.
IPR000897. SRP54_GTPase_dom.
[Graphical view]
PfamiPF04086. SRP-alpha_N. 1 hit.
PF00448. SRP54. 1 hit.
PF02881. SRP54_N. 1 hit.
[Graphical view]
SMARTiSM00382. AAA. 1 hit.
SM00962. SRP54. 1 hit.
SM00963. SRP54_N. 1 hit.
[Graphical view]
SUPFAMiSSF47364. SSF47364. 1 hit.
SSF52540. SSF52540. 1 hit.
SSF64356. SSF64356. 1 hit.
PROSITEiPS00300. SRP54. 1 hit.
[Graphical view]

Sequences (2)i

Sequence statusi: Complete.

This entry describes 2 isoformsi produced by alternative splicing. AlignAdd to basket

Isoform 1 (identifier: P08240-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide

        10         20         30         40         50
MLDFFTIFSK GGLVLWCFQG VSDSCTGPVN ALIRSVLLQE RGGNNSFTHE
60 70 80 90 100
ALTLKYKLDN QFELVFVVGF QKILTLTYVD KLIDDVHRLF RDKYRTEIQQ
110 120 130 140 150
QSALSLLNGT FDFQNDFLRL LREAEESSKI RAPTTMKKFE DSEKAKKPVR
160 170 180 190 200
SMIETRGEKP KEKAKNSKKK GAKKEGSDGP LATSKPVPAE KSGLPVGPEN
210 220 230 240 250
GVELSKEELI RRKREEFIQK HGRGMEKSNK STKSDAPKEK GKKAPRVWEL
260 270 280 290 300
GGCANKEVLD YSTPTTNGTP EAALSEDINL IRGTGSGGQL QDLDCSSSDD
310 320 330 340 350
EGAAQNSTKP SATKGTLGGM FGMLKGLVGS KSLSREDMES VLDKMRDHLI
360 370 380 390 400
AKNVAADIAV QLCESVANKL EGKVMGTFST VTSTVKQALQ ESLVQILQPQ
410 420 430 440 450
RRVDMLRDIM DAQRRQRPYV VTFCGVNGVG KSTNLAKISF WLLENGFSVL
460 470 480 490 500
IAACDTFRAG AVEQLRTHTR RLSALHPPEK HGGRTMVQLF EKGYGKDAAG
510 520 530 540 550
IAMEAIAFAR NQGFDVVLVD TAGRMQDNAP LMTALAKLIT VNTPDLVLFV
560 570 580 590 600
GEALVGNEAV DQLVKFNRAL ADHSMAQTPR LIDGIVLTKF DTIDDKVGAA
610 620 630
ISMTYITSKP IVFVGTGQTY CDLRSLNAKA VVAALMKA
Length:638
Mass (Da):69,811
Last modified:May 2, 2002 - v2
Checksum:i967F943CEE3FA79E
GO
Isoform 2 (identifier: P08240-2) [UniParc]FASTAAdd to basket

The sequence of this isoform differs from the canonical sequence as follows:
     40-67: Missing.

Note: No experimental confirmation available.
Show »
Length:610
Mass (Da):66,559
Checksum:i7A561BCA1C06A29E
GO

Experimental Info

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sequence conflicti81 – 811K → R in CAA29608 (PubMed:3340536).Curated
Sequence conflicti201 – 2011G → E in CAA29608 (PubMed:3340536).Curated
Sequence conflicti306 – 3072NS → TL in CAA29608 (PubMed:3340536).Curated
Sequence conflicti632 – 6321V → L in BAG64435 (PubMed:14702039).Curated

Alternative sequence

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Alternative sequencei40 – 6728Missing in isoform 2. 1 PublicationVSP_046055Add
BLAST

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X06272 mRNA. Translation: CAA29608.1.
AK303379 mRNA. Translation: BAG64435.1.
AK312377 mRNA. Translation: BAG35295.1.
AP001318 Genomic DNA. No translation available.
CH471065 Genomic DNA. Translation: EAW67686.1.
BC001162 mRNA. Translation: AAH01162.1.
BC009110 mRNA. Translation: AAH09110.1.
BC013583 mRNA. Translation: AAH13583.1.
CCDSiCCDS31717.1. [P08240-1]
CCDS53722.1. [P08240-2]
PIRiA29440.
RefSeqiNP_001171313.1. NM_001177842.1. [P08240-2]
NP_003130.2. NM_003139.3. [P08240-1]
UniGeneiHs.368376.

Genome annotation databases

EnsembliENST00000332118; ENSP00000328023; ENSG00000182934. [P08240-1]
ENST00000532259; ENSP00000435508; ENSG00000182934. [P08240-2]
GeneIDi6734.
KEGGihsa:6734.
UCSCiuc001qdh.4. human. [P08240-1]

Keywords - Coding sequence diversityi

Alternative splicing

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X06272 mRNA. Translation: CAA29608.1.
AK303379 mRNA. Translation: BAG64435.1.
AK312377 mRNA. Translation: BAG35295.1.
AP001318 Genomic DNA. No translation available.
CH471065 Genomic DNA. Translation: EAW67686.1.
BC001162 mRNA. Translation: AAH01162.1.
BC009110 mRNA. Translation: AAH09110.1.
BC013583 mRNA. Translation: AAH13583.1.
CCDSiCCDS31717.1. [P08240-1]
CCDS53722.1. [P08240-2]
PIRiA29440.
RefSeqiNP_001171313.1. NM_001177842.1. [P08240-2]
NP_003130.2. NM_003139.3. [P08240-1]
UniGeneiHs.368376.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
2FH5X-ray2.45A3-176[»]
2GO5electron microscopy7.4013-176[»]
5L3QX-ray3.20B/D1-638[»]
ProteinModelPortaliP08240.
SMRiP08240. Positions 1-130, 333-624.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi112612. 40 interactions.
IntActiP08240. 41 interactions.
MINTiMINT-1404634.
STRINGi9606.ENSP00000328023.

PTM databases

iPTMnetiP08240.
PhosphoSiteiP08240.
SwissPalmiP08240.

Polymorphism and mutation databases

BioMutaiSRPR.
DMDMi20455516.

Proteomic databases

EPDiP08240.
MaxQBiP08240.
PaxDbiP08240.
PeptideAtlasiP08240.
PRIDEiP08240.

Protocols and materials databases

DNASUi6734.
Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENST00000332118; ENSP00000328023; ENSG00000182934. [P08240-1]
ENST00000532259; ENSP00000435508; ENSG00000182934. [P08240-2]
GeneIDi6734.
KEGGihsa:6734.
UCSCiuc001qdh.4. human. [P08240-1]

Organism-specific databases

CTDi6734.
GeneCardsiSRPR.
HGNCiHGNC:11307. SRPRA.
HPAiHPA053860.
MIMi182180. gene.
neXtProtiNX_P08240.
PharmGKBiPA36131.
GenAtlasiSearch...

Phylogenomic databases

eggNOGiKOG0781. Eukaryota.
COG0552. LUCA.
GeneTreeiENSGT00550000074936.
HOGENOMiHOG000201671.
HOVERGENiHBG047566.
InParanoidiP08240.
KOiK13431.
OMAiEEFMQKH.
OrthoDBiEOG091G05TG.
PhylomeDBiP08240.
TreeFamiTF106189.

Enzyme and pathway databases

ReactomeiR-HSA-1799339. SRP-dependent cotranslational protein targeting to membrane.
R-HSA-381038. XBP1(S) activates chaperone genes.

Miscellaneous databases

ChiTaRSiSRPR. human.
EvolutionaryTraceiP08240.
GenomeRNAii6734.
PROiP08240.
SOURCEiSearch...

Gene expression databases

BgeeiENSG00000182934.
CleanExiHS_SRPR.
GenevisibleiP08240. HS.

Family and domain databases

Gene3Di3.40.50.300. 1 hit.
InterProiIPR003593. AAA+_ATPase.
IPR011012. Longin-like_dom.
IPR027417. P-loop_NTPase.
IPR007222. Sig_recog_particle_rcpt_asu_N.
IPR013822. Signal_recog_particl_SRP54_hlx.
IPR000897. SRP54_GTPase_dom.
[Graphical view]
PfamiPF04086. SRP-alpha_N. 1 hit.
PF00448. SRP54. 1 hit.
PF02881. SRP54_N. 1 hit.
[Graphical view]
SMARTiSM00382. AAA. 1 hit.
SM00962. SRP54. 1 hit.
SM00963. SRP54_N. 1 hit.
[Graphical view]
SUPFAMiSSF47364. SSF47364. 1 hit.
SSF52540. SSF52540. 1 hit.
SSF64356. SSF64356. 1 hit.
PROSITEiPS00300. SRP54. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiSRPRA_HUMAN
AccessioniPrimary (citable) accession number: P08240
Secondary accession number(s): A6NIB3
, B2R5Z8, B4E0H3, E9PJS4, Q9BVJ4
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 1, 1988
Last sequence update: May 2, 2002
Last modified: September 7, 2016
This is version 167 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Reference proteome

Documents

  1. Human chromosome 11
    Human chromosome 11: entries, gene names and cross-references to MIM
  2. MIM cross-references
    Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot
  3. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  4. 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.