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GPR143
HPA
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  • GPR143
PROTEIN SUMMARY GENE INFORMATION RNA DATA ANTIBODY DATA
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

GPR143
Synonyms OA1
Gene descriptioni

Full gene name according to HGNC.

G protein-coupled receptor 143
Protein classi

Assigned HPA protein class(es) for the encoded protein(s).

Disease related genes
G-protein coupled receptors
Human disease related genes
Potential drug targets
Transporters
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Membrane
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome X
Cytoband p22.2
Chromosome location (bp) 9725346 - 9786297
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

3
Ensembl ENSG00000101850 (version 109)
Entrez gene 4935
HGNC HGNC:20145
UniProt P51810 (UniProt - Evidence at protein level)
neXtProt NX_P51810
GeneCards GPR143
Antibodypedia GPR143 antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

Receptor for tyrosine, L-DOPA and dopamine. After binding to L-DOPA, stimulates Ca(2+) influx into the cytoplasm, increases secretion of the neurotrophic factor SERPINF1 and relocalizes beta arrestin at the plasma membrane; this ligand-dependent signaling occurs through a G(q)-mediated pathway in melanocytic cells. Its activity is mediated by G proteins which activate the phosphoinositide signaling pathway. Also plays a role as an intracellular G protein-coupled receptor involved in melanosome biogenesis, organization and transport.... show less
Molecular function (UniProt)i

Keywords assigned by UniProt to proteins due to their particular molecular function.

G-protein coupled receptor, Receptor, Transducer
Gene summary (Entrez)i

Useful information about the gene from Entrez

This gene encodes a protein that binds to heterotrimeric G proteins and is targeted to melanosomes in pigment cells. This protein is thought to be involved in intracellular signal transduction mechanisms. Mutations in this gene cause ocular albinism type 1, also referred to as Nettleship-Falls type ocular albinism, a severe visual disorder. A related pseudogene has been identified on chromosome Y. [provided by RefSeq, Dec 2009]... show less
PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
GPR143-201
ENSP00000406138
ENST00000431126
C9J9N1
[Direct mapping] G-protein-coupled receptor 143
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   3TM proteins predicted by MDM
Human disease related genes
   Congenital disorders of metabolism
   Congenital disorders of amino acid metabolism
   Nervous system diseases
   Eye disease
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0004930 [G protein-coupled receptor activity]
GO:0007186 [G protein-coupled receptor signaling pathway]
GO:0016020 [membrane]
GO:0035240 [dopamine binding]
GO:0072544 [L-DOPA binding]
GO:0072545 [tyrosine binding]
Show all
171 aa
19.4 kDa
No 3
GPR143-202
ENSP00000390546
ENST00000447366
H7BZN6
[Direct mapping] G-protein-coupled receptor 143
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   5TM proteins predicted by MDM
Human disease related genes
   Congenital disorders of metabolism
   Congenital disorders of amino acid metabolism
   Nervous system diseases
   Eye disease
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0004930 [G protein-coupled receptor activity]
GO:0007186 [G protein-coupled receptor signaling pathway]
GO:0016020 [membrane]
GO:0035240 [dopamine binding]
GO:0072544 [L-DOPA binding]
GO:0072545 [tyrosine binding]
Show all
267 aa
30.1 kDa
No 5
GPR143-203
ENSP00000417161
ENST00000467482
P51810
[Direct mapping] G-protein coupled receptor 143
Show all
Transporters
G-protein coupled receptors
   GPCRs excl olfactory receptors
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   GPCRHMM predicted membrane proteins
   # TM segments-based
   7TM proteins predicted by MDM
Disease related genes
Potential drug targets
Human disease related genes
   Congenital disorders of metabolism
   Congenital disorders of amino acid metabolism
   Nervous system diseases
   Eye disease
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0004930 [G protein-coupled receptor activity]
GO:0005515 [protein binding]
GO:0005737 [cytoplasm]
GO:0005764 [lysosome]
GO:0005765 [lysosomal membrane]
GO:0005794 [Golgi apparatus]
GO:0005886 [plasma membrane]
GO:0006726 [eye pigment biosynthetic process]
GO:0007165 [signal transduction]
GO:0007186 [G protein-coupled receptor signaling pathway]
GO:0007218 [neuropeptide signaling pathway]
GO:0007601 [visual perception]
GO:0016020 [membrane]
GO:0016324 [apical plasma membrane]
GO:0032400 [melanosome localization]
GO:0032402 [melanosome transport]
GO:0032438 [melanosome organization]
GO:0033162 [melanosome membrane]
GO:0035240 [dopamine binding]
GO:0035584 [calcium-mediated signaling using intracellular calcium source]
GO:0035643 [L-DOPA receptor activity]
GO:0042470 [melanosome]
GO:0048015 [phosphatidylinositol-mediated signaling]
GO:0050848 [regulation of calcium-mediated signaling]
GO:0072544 [L-DOPA binding]
GO:0072545 [tyrosine binding]
GO:1902908 [regulation of melanosome transport]
GO:1903056 [regulation of melanosome organization]
Show all
404 aa
43.9 kDa
No 7

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