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Description for Protein OPN4

opsin 4
1 total interacting proteins; 1 platelet interacting proteins
Icon Book Platelet Evidence (proteome studies/others : 0/0)
(Not detected in platelets)
Summary:
Opsins are members of the guanine nucleotide-binding protein (G protein)-coupled receptor superfamily. This gene encodes a photoreceptive opsin protein that is expressed within the ganglion and amacrine cell layers of the retina. In mouse, retinal ganglion cell axons expressing this gene projected to the suprachiasmatic nucleus and other brain nuclei involved in circadian photoentrainment. In mouse, this protein is coupled to a transient receptor potential (TRP) ion channel through a G protein signaling pathway and produces a physiologic light response via membrane depolarization and increased intracellular calcium. The protein functions as a sensory photopigment and may also have photoisomerase activity. Experiments with knockout mice indicate that this gene attenuates, but does not abolish, photoentrainment. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq] (PubMed Links)
Domains and Motifs:
  • TM: Transmembrane domain
    • Gene Ontology:
    Gene Ontology Annotations
    KEGG - Enzyme ID(s):
    None Available
    KEGG - Orthology:
    K04255
    KEGG - Pathway(s):
    None Available
    Nomenclature / Alternative Names:
    Melanopsin; Opsin 4 isoform 2; Opsin 4 isoform 1
    Approved Symbol:
    OPN4
    (De-) Phosphorylations:
    Total (de-) phosphorylation sites: 0
    No human (de-) phosphorylation sites; No platelet phosphorylation sites
    Phosphorylation Targets:
    Total phosphorylation targets: 0
    Human phosphorylation targets: 0;Predicted platelet targets: 0
    		Protein Characteristics:
    Isoform-specific Information
    Icon DrugsAssociated Drugs (DrugBank Accession):

  • B-Octylglucoside(db)

    Associated Genetic Diseases:

    None Available
    		• Predicted Transmembrane Domains:
  • Isoform 2 : 6
  • Isoform 1 : 6
    • Additional Identifiers:

    HPRD: 05977 Entrez Gene ID: 94233 OMIM ID: 606665 Swissprot Accession: Q9UHM6; A6NEB4;