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Aliases for OPN4 Gene

Aliases for OPN4 Gene

  • Opsin 4 2 3 5
  • Opsin-4 3 4
  • MOP 3 4
  • Opsin 4 (Melanopsin) 2
  • Melanopsin 2

External Ids for OPN4 Gene

Previous GeneCards Identifiers for OPN4 Gene

  • GC10P087296
  • GC10P087636
  • GC10P088545
  • GC10P088078
  • GC10P088404
  • GC10P082268
  • GC10P088417
  • GC10P088423

Summaries for OPN4 Gene

Entrez Gene Summary for OPN4 Gene

  • 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, Jul 2008]

GeneCards Summary for OPN4 Gene

OPN4 (Opsin 4) is a Protein Coding gene. Diseases associated with OPN4 include borderline glaucoma and retinal degeneration. Among its related pathways are Signaling by GPCR and Interleukin-3, 5 and GM-CSF signaling. GO annotations related to this gene include G-protein coupled receptor activity and G-protein coupled photoreceptor activity. An important paralog of this gene is OPN1SW.

UniProtKB/Swiss-Prot for OPN4 Gene

  • Photoreceptor required for regulation of circadian rhythm. Contributes to pupillar reflex and other non-image forming responses to light. May be able to isomerize covalently bound all-trans retinal back to 11-cis retinal (By similarity).

Gene Wiki entry for OPN4 Gene

No data available for Tocris Summary , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for OPN4 Gene

Genomics for OPN4 Gene

Regulatory Elements for OPN4 Gene

Genomic Location for OPN4 Gene

86,654,557 bp from pter
86,666,848 bp from pter
12,292 bases
Plus strand

Genomic View for OPN4 Gene

Genes around OPN4 on UCSC Golden Path with GeneCards custom track

Cytogenetic band:
OPN4 Gene in genomic location: bands according to Ensembl, locations according to GeneLoc (and/or Entrez Gene and/or Ensembl if different)
Genomic Location for OPN4 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for OPN4 Gene

Proteins for OPN4 Gene

  • Protein details for OPN4 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Protein Accession:
    Secondary Accessions:
    • B7ZLB3
    • Q14D01
    • Q2PP22
    • Q8NGQ9

    Protein attributes for OPN4 Gene

    478 amino acids
    Molecular mass:
    52635 Da
    Quaternary structure:
    No Data Available
    • Sequence=BAC05951.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305};

    Alternative splice isoforms for OPN4 Gene


neXtProt entry for OPN4 Gene

Proteomics data for OPN4 Gene at MOPED

Post-translational modifications for OPN4 Gene

  • Modification sites at PhosphoSitePlus
  • Modification sites at neXtProt

Other Protein References for OPN4 Gene

Antibody Products

No data available for DME Specific Peptides for OPN4 Gene

Domains & Families for OPN4 Gene

Gene Families for OPN4 Gene

Protein Domains for OPN4 Gene

Suggested Antigen Peptide Sequences for OPN4 Gene

GenScript: Design optimal peptide antigens:

Graphical View of Domain Structure for InterPro Entry



  • Belongs to the G-protein coupled receptor 1 family. Opsin subfamily.
  • Belongs to the G-protein coupled receptor 1 family. Opsin subfamily.
genes like me logo Genes that share domains with OPN4: view

Function for OPN4 Gene

Molecular function for OPN4 Gene

UniProtKB/Swiss-Prot Function:
Photoreceptor required for regulation of circadian rhythm. Contributes to pupillar reflex and other non-image forming responses to light. May be able to isomerize covalently bound all-trans retinal back to 11-cis retinal (By similarity).
genes like me logo Genes that share phenotypes with OPN4: view

Animal Models for OPN4 Gene

MGI Knock Outs for OPN4:

Animal Model Products

No data available for Enzyme Numbers (IUBMB) , Gene Ontology (GO) - Molecular Function , Human Phenotype Ontology , miRNA , Transcription Factor Targets and HOMER Transcription for OPN4 Gene

Localization for OPN4 Gene

Subcellular locations from UniProtKB/Swiss-Prot for OPN4 Gene

Cell membrane; Multi-pass membrane protein. Note=Found in soma, dendrites and proximal part of axons of certain retinal ganglion cells. {ECO:0000250}.

Subcellular locations from

Jensen Localization Image for OPN4 Gene COMPARTMENTS Subcellular localization image for OPN4 gene
Compartment Confidence
plasma membrane 5
nucleus 2
cytoskeleton 1

No data available for Gene Ontology (GO) - Cellular Components for OPN4 Gene

Pathways & Interactions for OPN4 Gene

genes like me logo Genes that share pathways with OPN4: view

Gene Ontology (GO) - Biological Process for OPN4 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0007186 G-protein coupled receptor signaling pathway IEA --
GO:0007601 visual perception IEA --
GO:0007602 phototransduction IEA,IDA 15674244
genes like me logo Genes that share ontologies with OPN4: view

No data available for SIGNOR curated interactions for OPN4 Gene

Drugs & Compounds for OPN4 Gene

(2) Drugs for OPN4 Gene - From: Novoseek

Name Status Disease Links Group Role Mechanism of Action Clinical Trials

(3) Additional Compounds for OPN4 Gene - From: Novoseek

Name Synonyms Role CAS Number PubChem IDs PubMed IDs
genes like me logo Genes that share compounds with OPN4: view

Transcripts for OPN4 Gene

mRNA/cDNA for OPN4 Gene

(2) REFSEQ mRNAs :
(5) Additional mRNA sequences :
(10) Selected AceView cDNA sequences:
(3) Ensembl transcripts including schematic representations, and UCSC links where relevant :

Unigene Clusters for OPN4 Gene

Opsin 4:
Representative Sequences:

Alternative Splicing Database (ASD) splice patterns (SP) for OPN4 Gene

ExUns: 1a · 1b ^ 2 ^ 3 ^ 4 ^ 5a · 5b ^ 6 ^ 7 ^ 8 ^ 9 ^ 10 ^ 11a · 11b ^ 12
SP1: -
SP2: -

Relevant External Links for OPN4 Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for OPN4 Gene

mRNA expression in normal human tissues for OPN4 Gene

mRNA expression in embryonic tissues and stem cells from LifeMap Discovery

mRNA differential expression in normal tissues according to GTEx for OPN4 Gene

This gene is overexpressed in Brain - Putamen (basal ganglia) (x7.2), Brain - Nucleus accumbens (basal ganglia) (x6.4), Muscle - Skeletal (x4.7), Brain - Caudate (basal ganglia) (x4.3), and Adipose - Subcutaneous (x4.1).

Integrated Proteomics: protein expression in normal tissues and cell lines from ProteomicsDB, PaxDb, and MOPED for OPN4 Gene

SOURCE GeneReport for Unigene cluster for OPN4 Gene Hs.283922

mRNA Expression by UniProt/SwissProt for OPN4 Gene

Tissue specificity: Eye. Expression is restricted within the ganglion and amacrine cell layers of the retina.
genes like me logo Genes that share expression patterns with OPN4: view

Primer Products

In Situ Assay Products

No data available for Protein differential expression in normal tissues and Protein tissue co-expression partners for OPN4 Gene

Orthologs for OPN4 Gene

This gene was present in the common ancestor of animals.

Orthologs for OPN4 Gene

Organism Taxonomy Gene Similarity Type Details
(Bos Taurus)
Mammalia OPN4 35
  • 85.63 (n)
  • 82.01 (a)
OPN4 36
  • 82 (a)
(Canis familiaris)
Mammalia OPN4 35
  • 84.84 (n)
  • 80.17 (a)
OPN4 36
  • 78 (a)
(Mus musculus)
Mammalia Opn4 35
  • 82.83 (n)
  • 80.09 (a)
Opn4 16
Opn4 36
  • 70 (a)
(Pan troglodytes)
Mammalia OPN4 35
  • 99.66 (n)
  • 99.8 (a)
OPN4 36
  • 98 (a)
(Rattus norvegicus)
Mammalia Opn4 35
  • 81.53 (n)
  • 78.56 (a)
(Monodelphis domestica)
Mammalia OPN4 36
  • 59 (a)
(Ornithorhynchus anatinus)
Mammalia OPN4 36
  • 57 (a)
(Gallus gallus)
Aves OPN4 35
  • 65.68 (n)
  • 65.19 (a)
OPN4-2 36
  • 51 (a)
(Anolis carolinensis)
Reptilia OPN4 36
  • 47 (a)
tropical clawed frog
(Silurana tropicalis)
Amphibia LOC100491785 35
  • 65.84 (n)
  • 68.41 (a)
African clawed frog
(Xenopus laevis)
Amphibia opn4-A 35
(Danio rerio)
Actinopterygii opn4 35
opn4.1 36
  • 48 (a)
opn4a 36
  • 45 (a)
opn4b 36
  • 50 (a)
fruit fly
(Drosophila melanogaster)
Insecta ninaE 37
  • 37 (a)
Rh2 37
  • 38 (a)
Rh3 37
  • 33 (a)
Rh4 37
  • 34 (a)
Rh5 37
  • 33 (a)
Rh6 37
  • 38 (a)
Rh7 37
  • 33 (a)
ninaE 35
  • 51.39 (n)
  • 40.13 (a)
ninaE 36
  • 30 (a)
Rh2 36
  • 31 (a)
Rh3 36
  • 27 (a)
Rh4 36
  • 30 (a)
Rh5 36
  • 27 (a)
Rh6 36
  • 31 (a)
Rh7 36
  • 25 (a)
Species with no ortholog for OPN4:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • 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)
  • 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)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)

Evolution for OPN4 Gene

Gene Tree for OPN4 (if available)
Gene Tree for OPN4 (if available)

Paralogs for OPN4 Gene

Paralogs for OPN4 Gene

(9) SIMAP similar genes for OPN4 Gene using alignment to 2 proteins:

genes like me logo Genes that share paralogs with OPN4: view

Variants for OPN4 Gene

Sequence variations from dbSNP and Humsavar for OPN4 Gene

SNP ID Clin Chr 10 pos Sequence Context AA Info Type
VAR_020430 -
rs2675703 - 86,654,812(+) AGTCC(C/T)GCCCA reference, missense
VAR_029775 -
rs2005943 -- 86,653,302(+) GTGAA(A/C)TCCTG upstream-variant-2KB
rs2007328 -- 86,652,952(+) TGCCC(A/G)GTCGG upstream-variant-2KB

Structural Variations from Database of Genomic Variants (DGV) for OPN4 Gene

Variant ID Type Subtype PubMed ID
nsv467411 CNV Loss 19166990
nsv470968 CNV Loss 18288195
dgv116n27 CNV Loss 19166990
dgv791n71 CNV Gain 21882294
dgv792n71 CNV Gain 21882294
dgv793n71 CNV Gain 21882294
nsv524269 CNV Loss 19592680
nsv895836 CNV Loss 21882294
nsv895837 CNV Loss 21882294
nsv895839 CNV Gain 21882294
dgv794n71 CNV Loss 21882294
dgv795n71 CNV Loss 21882294
dgv796n71 CNV Loss 21882294

Variation tolerance for OPN4 Gene

Residual Variation Intolerance Score: 26.9% of all genes are more intolerant (likely to be disease-causing)
Gene Damage Index Score: 4.00; 60.20% of all genes are more intolerant (likely to be disease-causing)

Relevant External Links for OPN4 Gene

HapMap Linkage Disequilibrium report
Human Gene Mutation Database (HGMD)

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for OPN4 Gene

Disorders for OPN4 Gene

MalaCards: The human disease database

(5) MalaCards diseases for OPN4 Gene - From: DISEASES, Novoseek, and GeneCards

Disorder Aliases PubMed IDs
borderline glaucoma
  • preglaucoma
retinal degeneration
  • degeneration of retina
optic atrophy plus syndrome
  • optic atrophy
retinitis pigmentosa
  • retinitis pigmentosa 1
major depressive disorder and accelerated response to antidepressant drug treatment
  • unipolar depression
- elite association - COSMIC cancer census association via MalaCards
Search OPN4 in MalaCards View complete list of genes associated with diseases

Relevant External Links for OPN4

Genetic Association Database (GAD)
Human Genome Epidemiology (HuGE) Navigator
Atlas of Genetics and Cytogenetics in Oncology and Haematology:
genes like me logo Genes that share disorders with OPN4: view

No data available for UniProtKB/Swiss-Prot and Genatlas for OPN4 Gene

Publications for OPN4 Gene

  1. A novel human opsin in the inner retina. (PMID: 10632589) Provencio I. … Rollag M.D. (J. Neurosci. 2000) 2 3 4 23 67
  2. A missense variant (P10L) of the melanopsin (OPN4) gene in seasonal affective disorder. (PMID: 18804284) Roecklein K.A. … Provencio I. (J Affect Disord 2009) 3 23
  3. Melanopsin triggers the release of internal calcium stores in response to light. (PMID: 16961436) Kumbalasiri T. … Provencio I. (Photochem. Photobiol. 2007) 3 23
  4. Induction of photosensitivity by heterologous expression of melanopsin. (PMID: 15674243) Qiu X. … Berson D.M. (Nature 2005) 3 23
  5. Addition of human melanopsin renders mammalian cells photoresponsive. (PMID: 15674244) Melyan Z. … Hankins M.W. (Nature 2005) 3 23

Products for OPN4 Gene

Sources for OPN4 Gene

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