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Protein

CD9 antigen

Gene

Cd9

Organism
Rattus norvegicus (Rat)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

Involved in platelet activation and aggregation. Regulates paranodal junction formation. Involved in cell adhesion, cell motility and tumor metastasis. Required for sperm-egg fusion (By similarity).By similarity

GO - Molecular functioni

  • integrin binding Source: RGD

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Cell adhesion, Fertilization

Enzyme and pathway databases

ReactomeiR-RNO-114608. Platelet degranulation.
R-RNO-1300652. Sperm:Oocyte Membrane Binding.

Names & Taxonomyi

Protein namesi
Recommended name:
CD9 antigen
Alternative name(s):
CD_antigen: CD9
Gene namesi
Name:Cd9
OrganismiRattus norvegicus (Rat)
Taxonomic identifieri10116 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaSciurognathiMuroideaMuridaeMurinaeRattus
Proteomesi
  • UP000002494 Componenti: Chromosome 4

Organism-specific databases

RGDi2318. Cd9.

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Topological domaini2 – 1211CytoplasmicSequence analysisAdd
BLAST
Transmembranei13 – 3321HelicalSequence analysisAdd
BLAST
Topological domaini34 – 5320ExtracellularSequence analysisAdd
BLAST
Transmembranei54 – 7421HelicalSequence analysisAdd
BLAST
Topological domaini75 – 8511CytoplasmicSequence analysisAdd
BLAST
Transmembranei86 – 10924HelicalSequence analysisAdd
BLAST
Topological domaini110 – 19384ExtracellularSequence analysisAdd
BLAST
Transmembranei194 – 21926HelicalSequence analysisAdd
BLAST
Topological domaini220 – 2267CytoplasmicSequence analysis

GO - Cellular componenti

  • apical plasma membrane Source: RGD
  • cell surface Source: RGD
  • external side of plasma membrane Source: Ensembl
  • extracellular exosome Source: Ensembl
  • extracellular space Source: Ensembl
  • focal adhesion Source: Ensembl
  • integral component of membrane Source: UniProtKB-KW
Complete GO annotation...

Keywords - Cellular componenti

Membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Initiator methionineiRemovedBy similarity
Chaini2 – 226225CD9 antigenPRO_0000219208Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Lipidationi9 – 91S-palmitoyl cysteineBy similarity
Glycosylationi50 – 501N-linked (GlcNAc...)Sequence analysis
Lipidationi76 – 761S-palmitoyl cysteineBy similarity
Lipidationi77 – 771S-palmitoyl cysteineBy similarity
Lipidationi85 – 851S-palmitoyl cysteineBy similarity
Lipidationi216 – 2161S-palmitoyl cysteineBy similarity
Lipidationi217 – 2171S-palmitoyl cysteineBy similarity

Post-translational modificationi

Palmitoylated at a low, basal level in unstimulated platelets. The level of palmitoylation increases when platelets are activated by thrombin (in vitro) (By similarity).By similarity

Keywords - PTMi

Disulfide bond, Glycoprotein, Lipoprotein, Palmitate

Proteomic databases

PaxDbiP40241.
PRIDEiP40241.

PTM databases

iPTMnetiP40241.

Expressioni

Tissue specificityi

Expressed in the peripheral nervous system.

Gene expression databases

ExpressionAtlasiP40241. baseline and differential.
GenevisibleiP40241. RN.

Interactioni

Subunit structurei

Forms both disulfide-linked homodimers and higher homooligomers as well as heterooligomers with other members of the tetraspanin family. Interacts with CD63. Identified in a complex with CD63 and ITGB3. Associates with CR2/CD21 and with PTGFRN/CD9P1. Interacts directly with IGSF8 (By similarity).By similarity

GO - Molecular functioni

  • integrin binding Source: RGD

Protein-protein interaction databases

STRINGi10116.ENSRNOP00000026633.

Structurei

3D structure databases

ProteinModelPortaliP40241.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the tetraspanin (TM4SF) family.Curated

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiKOG3882. Eukaryota.
ENOG4111IRY. LUCA.
GeneTreeiENSGT00760000118983.
HOGENOMiHOG000230651.
HOVERGENiHBG002324.
InParanoidiP40241.
KOiK06460.
OMAiYTHKDEV.
OrthoDBiEOG7FBRJV.
PhylomeDBiP40241.
TreeFamiTF352895.

Family and domain databases

Gene3Di1.10.1450.10. 1 hit.
InterProiIPR028977. CD81_LEL.
IPR000301. Tetraspanin.
IPR018499. Tetraspanin/Peripherin.
IPR018503. Tetraspanin_CS.
IPR008952. Tetraspanin_EC2.
[Graphical view]
PfamiPF00335. Tetraspannin. 1 hit.
[Graphical view]
PIRSFiPIRSF002419. Tetraspanin. 1 hit.
PRINTSiPR00259. TMFOUR.
SUPFAMiSSF48652. SSF48652. 1 hit.
PROSITEiPS00421. TM4_1. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

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

P40241-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MPVKGGSKCI KYLLFGFNFI FWLAGIAVLA IGLWLRFDSQ TKSIFEQETN
60 70 80 90 100
HSSFYTGVYI LIGAGALMML VGFLGCCGAV QESQCMLGLF FGFLLVIFAI
110 120 130 140 150
EIAAAVWGYT HKDEVIKELQ EFYKDTYQKL RNKDEPQRET LKAIHMALNC
160 170 180 190 200
CGIAGGVEQF ISDICPKKQV LESFQVKSCP DAIDEVFHSK FHIIGAVGIG
210 220
IAVVMIFGMI FSMILCCAIR RSREMV
Length:226
Mass (Da):25,215
Last modified:January 23, 2007 - v2
Checksum:i55E56BA0C595CF98
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X76489 mRNA. Translation: CAA54027.1.
PIRiI56562. S39262.
RefSeqiNP_444177.1. NM_053018.1.
UniGeneiRn.2091.

Genome annotation databases

EnsembliENSRNOT00000026633; ENSRNOP00000026633; ENSRNOG00000019556.
GeneIDi24936.
KEGGirno:24936.
UCSCiRGD:2318. rat.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X76489 mRNA. Translation: CAA54027.1.
PIRiI56562. S39262.
RefSeqiNP_444177.1. NM_053018.1.
UniGeneiRn.2091.

3D structure databases

ProteinModelPortaliP40241.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi10116.ENSRNOP00000026633.

PTM databases

iPTMnetiP40241.

Proteomic databases

PaxDbiP40241.
PRIDEiP40241.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENSRNOT00000026633; ENSRNOP00000026633; ENSRNOG00000019556.
GeneIDi24936.
KEGGirno:24936.
UCSCiRGD:2318. rat.

Organism-specific databases

CTDi928.
RGDi2318. Cd9.

Phylogenomic databases

eggNOGiKOG3882. Eukaryota.
ENOG4111IRY. LUCA.
GeneTreeiENSGT00760000118983.
HOGENOMiHOG000230651.
HOVERGENiHBG002324.
InParanoidiP40241.
KOiK06460.
OMAiYTHKDEV.
OrthoDBiEOG7FBRJV.
PhylomeDBiP40241.
TreeFamiTF352895.

Enzyme and pathway databases

ReactomeiR-RNO-114608. Platelet degranulation.
R-RNO-1300652. Sperm:Oocyte Membrane Binding.

Miscellaneous databases

NextBioi604917.
PROiP40241.

Gene expression databases

ExpressionAtlasiP40241. baseline and differential.
GenevisibleiP40241. RN.

Family and domain databases

Gene3Di1.10.1450.10. 1 hit.
InterProiIPR028977. CD81_LEL.
IPR000301. Tetraspanin.
IPR018499. Tetraspanin/Peripherin.
IPR018503. Tetraspanin_CS.
IPR008952. Tetraspanin_EC2.
[Graphical view]
PfamiPF00335. Tetraspannin. 1 hit.
[Graphical view]
PIRSFiPIRSF002419. Tetraspanin. 1 hit.
PRINTSiPR00259. TMFOUR.
SUPFAMiSSF48652. SSF48652. 1 hit.
PROSITEiPS00421. TM4_1. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "CD9, a major platelet cell surface glycoprotein, is a ROCA antigen and is expressed in the nervous system."
    Kaprielian Z., Cho K.O., Hadjiargyrou M., Patterson P.H.
    J. Neurosci. 15:562-573(1995) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [MRNA].
    Strain: Sprague-Dawley.
    Tissue: Sciatic nerve.
  2. Lubec G., Kang S.U., Lubec S.
    Submitted (SEP-2007) to UniProtKB
    Cited for: PROTEIN SEQUENCE OF 118-131 AND 143-190, IDENTIFICATION BY MASS SPECTROMETRY.
    Strain: Sprague-Dawley.
    Tissue: Brain.

Entry informationi

Entry nameiCD9_RAT
AccessioniPrimary (citable) accession number: P40241
Entry historyi
Integrated into UniProtKB/Swiss-Prot: February 1, 1995
Last sequence update: January 23, 2007
Last modified: May 11, 2016
This is version 117 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. 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.