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Aliases for GP9 Gene

Aliases for GP9 Gene

  • Glycoprotein IX (Platelet) 2 3
  • Glycoprotein 9 3 4
  • GPIX 3 4
  • Platelet Glycoprotein IX 3
  • CD42a Antigen 4
  • CD42a 3
  • GP-IX 4

External Ids for GP9 Gene

Summaries for GP9 Gene

Entrez Gene Summary for GP9 Gene

  • This gene encodes a small membrane glycoprotein found on the surface of human platelets. It forms a 1-to-1 noncovalent complex with glycoprotein Ib, a platelet surface membrane glycoprotein complex that functions as a receptor for von Willebrand factor. The complete receptor complex includes noncovalent association of the alpha and beta subunits with the protein encoded by this gene and platelet glycoprotein V. Defects in this gene are a cause of Bernard-Soulier syndrome, also known as giant platelet disease. These patients have unusually large platelets and have a clinical bleeding tendency. [provided by RefSeq, Oct 2008]

GeneCards Summary for GP9 Gene

GP9 (Glycoprotein IX (Platelet)) is a Protein Coding gene. Diseases associated with GP9 include bernard-soulier syndrome, type c and gray platelet syndrome. Among its related pathways are Hemostasis and Platelet Aggregation Inhibitor Pathway, Pharmacodynamics. An important paralog of this gene is GP1BB.

UniProtKB/Swiss-Prot for GP9 Gene

  • The GPIb-V-IX complex functions as the vWF receptor and mediates vWF-dependent platelet adhesion to blood vessels. The adhesion of platelets to injured vascular surfaces in the arterial circulation is a critical initiating event in hemostasis. GP-IX may provide for membrane insertion and orientation of GP-Ib

Gene Wiki entry for GP9 Gene

No data available for Tocris Summary , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for GP9 Gene

Genomics for GP9 Gene

Genomic Location for GP9 Gene

129,056,617 bp from pter
129,062,411 bp from pter
5,795 bases
Plus strand

Genomic View for GP9 Gene

UCSC Golden Path with GeneCards custom track
Cytogenetic band:
Genomic Location for GP9 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for GP9 Gene

Regulatory Elements for GP9 Gene

Proteins for GP9 Gene

  • Protein details for GP9 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Platelet glycoprotein IX
    Protein Accession:
    Secondary Accessions:
    • Q14445
    • Q8N1D1
    • Q92525

    Protein attributes for GP9 Gene

    177 amino acids
    Molecular mass:
    19046 Da
    Quaternary structure:
    • Two GP-Ib beta are disulfide-linked to one GP-Ib alpha. GP-IX is complexed with the GP-Ib heterodimer via a non covalent linkage
    • Platelet activation apparently involves disruption of the macromolecular complex of GP-Ib with the platelet glycoprotein IX (GP-IX) and dissociation of GP-Ib from the actin-binding protein

    Three dimensional structures from OCA and Proteopedia for GP9 Gene

neXtProt entry for GP9 Gene

Proteomics data for GP9 Gene at MOPED

Post-translational modifications for GP9 Gene

Other Protein References for GP9 Gene

ENSEMBL proteins:
Reactome Protein details:
REFSEQ proteins:

No data available for DME Specific Peptides for GP9 Gene

Domains for GP9 Gene

Gene Families for GP9 Gene

  • CD :CD molecules

Suggested Antigen Peptide Sequences for GP9 Gene

Graphical View of Domain Structure for InterPro Entry



  • Contains 1 LRRCT domain.:
    • P14770
  • Contains 1 LRRNT domain.:
    • P14770
  • Contains 1 LRR (leucine-rich) repeat.:
    • P14770
genes like me logo Genes that share domains with GP9: view

Function for GP9 Gene

Molecular function for GP9 Gene

GENATLAS Biochemistry: platelet glycoprotein IX (20kDa),non covalently bound to the GP1B complex in the von Willebrand receptor
UniProtKB/Swiss-Prot Function: The GPIb-V-IX complex functions as the vWF receptor and mediates vWF-dependent platelet adhesion to blood vessels. The adhesion of platelets to injured vascular surfaces in the arterial circulation is a critical initiating event in hemostasis. GP-IX may provide for membrane insertion and orientation of GP-Ib

Gene Ontology (GO) - Molecular Function for GP9 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005515 protein binding IPI 25416956
genes like me logo Genes that share ontologies with GP9: view

Phenotypes for GP9 Gene

GenomeRNAi human phenotypes for GP9:
genes like me logo Genes that share phenotypes with GP9: view

miRNA for GP9 Gene

miRTarBase miRNAs that target GP9

No data available for Enzyme Numbers (IUBMB) , Animal Models , Transcription Factor Targeting and HOMER Transcription for GP9 Gene

Localization for GP9 Gene

Subcellular locations from UniProtKB/Swiss-Prot for GP9 Gene

Membrane; Single-pass type I membrane protein.

Subcellular locations from

Jensen Localization Image for GP9 Gene COMPARTMENTS Subcellular localization image for GP9 gene
Compartment Confidence
plasma membrane 4
extracellular 2
cytosol 1
endoplasmic reticulum 1
mitochondrion 1
peroxisome 1

Gene Ontology (GO) - Cellular Components for GP9 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005886 plasma membrane TAS --
GO:0005887 integral component of plasma membrane TAS 2771955
genes like me logo Genes that share ontologies with GP9: view

Pathways for GP9 Gene

genes like me logo Genes that share pathways with GP9: view

Gene Ontology (GO) - Biological Process for GP9 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0007155 cell adhesion IEA --
GO:0007596 blood coagulation TAS --
GO:0007597 blood coagulation, intrinsic pathway TAS --
GO:0030168 platelet activation TAS --
genes like me logo Genes that share ontologies with GP9: view

Compounds for GP9 Gene

(1) Drugbank Compounds for GP9 Gene

Compound Synonyms Cas Number Type Actions PubMed IDs
  • 6'-Methoxycinchonidine
130-95-0 target other

(9) Novoseek inferred chemical compound relationships for GP9 Gene

Compound -log(P) Hits PubMed IDs
ristocetin 73 1
quinine 44.7 5
adp 22.2 1
asparagine 20.9 2
serine 6.48 5
genes like me logo Genes that share compounds with GP9: view

Transcripts for GP9 Gene

mRNA/cDNA for GP9 Gene

(4) REFSEQ mRNAs :
(3) Additional mRNA sequences :
(15) Selected AceView cDNA sequences:
(1) Ensembl transcripts including schematic representations, and UCSC links where relevant :

Unigene Clusters for GP9 Gene

Glycoprotein IX (platelet):
Representative Sequences:

Alternative Splicing Database (ASD) splice patterns (SP) for GP9 Gene

No ASD Table

Relevant External Links for GP9 Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for GP9 Gene

mRNA expression in normal human tissues for GP9 Gene

mRNA expression in embryonic tissues and stem cells from LifeMap Discovery

mRNA differential expression in normal tissues according to GTEx for GP9 Gene

This gene is overexpressed in Whole Blood (41.0) and Spleen (6.4).

Integrated Proteomics: protein expression from ProteomicsDB, PaxDb, and MOPED for GP9 Gene

SOURCE GeneReport for Unigene cluster for GP9 Gene Hs.1144

genes like me logo Genes that share expressions with GP9: view

No data available for mRNA Expression by UniProt/SwissProt for GP9 Gene

Orthologs for GP9 Gene

This gene was present in the common ancestor of chordates.

Orthologs for GP9 Gene

Organism Taxonomy Gene Similarity Type Details
(Pan troglodytes)
Mammalia GP9 35
  • 98.12 (n)
  • 98.31 (a)
GP9 36
  • 98 (a)
(Bos Taurus)
Mammalia GP9 35
  • 76.82 (n)
  • 68.21 (a)
GP9 36
  • 64 (a)
(Canis familiaris)
Mammalia GP9 35
  • 84.09 (n)
  • 81.82 (a)
GP9 36
  • 77 (a)
(Mus musculus)
Mammalia Gp9 35
  • 76.6 (n)
  • 72.19 (a)
Gp9 16
Gp9 36
  • 71 (a)
(Monodelphis domestica)
Mammalia GP9 36
  • 42 (a)
(Ornithorhynchus anatinus)
Mammalia GP9 36
  • 44 (a)
(Rattus norvegicus)
Mammalia Gp9 35
  • 75.28 (n)
  • 68.87 (a)
(Gallus gallus)
Aves GP9 35
  • 50.88 (n)
  • 45.86 (a)
GP9 36
  • 33 (a)
(Anolis carolinensis)
Reptilia GP9 36
  • 39 (a)
(Danio rerio)
Actinopterygii GP9 36
  • 21 (a)
Species with no ortholog for GP9:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African clawed frog (Xenopus laevis)
  • African malaria mosquito (Anopheles gambiae)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • baker's yeast (Saccharomyces cerevisiae)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • fruit fly (Drosophila melanogaster)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • rainbow trout (Oncorhynchus mykiss)
  • rice (Oryza sativa)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea squirt (Ciona intestinalis)
  • sea squirt (Ciona savignyi)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • thale cress (Arabidopsis thaliana)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • tropical clawed frog (Silurana tropicalis)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)

Evolution for GP9 Gene

Gene Tree for GP9 (if available)
Gene Tree for GP9 (if available)

Paralogs for GP9 Gene

Paralogs for GP9 Gene

Selected SIMAP similar genes for GP9 Gene using alignment to 2 proteins:

genes like me logo Genes that share paralogs with GP9: view

Variants for GP9 Gene

Sequence variations from dbSNP and Humsavar for GP9 Gene

SNP ID Clin Chr 03 pos Sequence Context AA Info Type MAF
rs2062127 -- 129,055,648(-) aaaaa(A/G)aaaga upstream-variant-2KB
rs2062128 -- 129,055,514(-) GCTGA(A/C)AGCCC upstream-variant-2KB
rs2062129 -- 129,055,048(-) atgac(C/G)gactc upstream-variant-2KB
rs5030764 Pathogenic, Bernard-Soulier syndrome (BSS) 129,061,921(+) CAACA(A/G)CAGCC reference, missense
rs7636017 -- 129,055,829(+) tagta(C/G)agaga upstream-variant-2KB

Structural Variations from Database of Genomic Variants (DGV) for GP9 Gene

Variant ID Type Subtype PubMed ID
dgv5251n71 CNV Loss 21882294
dgv5252n71 CNV Loss 21882294
nsv877471 CNV Loss 21882294

Relevant External Links for GP9 Gene

HapMap Linkage Disequilibrium report
Human Gene Mutation Database (HGMD)
Locus Specific Mutation Databases (LSDB)

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for GP9 Gene

Disorders for GP9 Gene

(1) OMIM Diseases for GP9 Gene (173515)


  • Bernard-Soulier syndrome (BSS) [MIM:231200]: A coagulation disorder characterized by a prolonged bleeding time, unusually large platelets, thrombocytopenia, and impaired prothrombin consumption. {ECO:0000269 PubMed:10583255, ECO:0000269 PubMed:11167791, ECO:0000269 PubMed:11758225, ECO:0000269 PubMed:12100158, ECO:0000269 PubMed:8481514, ECO:0000269 PubMed:9163595, ECO:0000269 PubMed:9886312}. Note=The disease is caused by mutations affecting the gene represented in this entry.

(2) University of Copenhagen DISEASES for GP9 Gene

(6) Novoseek inferred disease relationships for GP9 Gene

Disease -log(P) Hits PubMed IDs
bernard-soulier syndrome 98.1 22
coagulopathy 77.1 4
platelet disorder 76.2 1
gray platelet syndrome 75 1
thrombocytopenia 62.6 2

Genatlas disease for GP9 Gene

Bernard-Soulier Syndrome

Relevant External Links for GP9

Genetic Association Database (GAD)
Human Genome Epidemiology (HuGE) Navigator
genes like me logo Genes that share disorders with GP9: view

Publications for GP9 Gene

  1. Human platelet glycoprotein IX. Characterization of cDNA and localization of the gene to chromosome 3. (PMID: 2253772) Hickey M.J. … Roth G.J. (FEBS Lett. 1990) 2 3 4 23
  2. A phenylalanine-55 to serine amino-acid substitution in the human glycoprotein IX leucine-rich repeat is associated with Bernard-Soulier syndrome. (PMID: 9163595) Noris P. … von dem Borne A.E.G.K. (Br. J. Haematol. 1997) 3 4 23 48
  3. A new variant of Bernard-Soulier syndrome characterized by dysfunctional glycoprotein (GP) Ib and severely reduced amounts of GPIX and GPV. (PMID: 9886312) Noris P. … Balduini C.L. (Br. J. Haematol. 1998) 3 4 23
  4. Novel point mutation in the leucine-rich motif of the platelet glycoprotein IX associated with Bernard-Soulier syndrome. (PMID: 9432024) Suzuki K. … Sasaki H. (Br. J. Haematol. 1997) 3 23 48
  5. Characterization of the gene encoding human platelet glycoprotein IX. (PMID: 8429020) Hickey M.J. … Roth G.J. (J. Biol. Chem. 1993) 3 4 23

Products for GP9 Gene

Sources for GP9 Gene

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