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UniProt functional annotation for O77206 | ||
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| UniProt code: O77206. |
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| Organism: | |
Lingulodinium polyedra (Dinoflagellate) (Gonyaulax polyedra). |
| Taxonomy: | |
Eukaryota; Sar; Alveolata; Dinophyceae; Gonyaulacales; Lingulodinium. |
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| Function: | |
Emits blue light flashes with a wavelength of 475 nm during the night phase. {ECO:0000269|PubMed:15665092, ECO:0000269|PubMed:7197271, ECO:0000269|PubMed:7918642}. |
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| Catalytic activity: | |
Reaction=dinoflagellate luciferin + O2 = H(+) + H2O + hnu + oxidized dinoflagellate luciferin; Xref=Rhea:RHEA:28775, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379, ChEBI:CHEBI:30212, ChEBI:CHEBI:61708, ChEBI:CHEBI:61796; EC=1.13.12.18; Evidence={ECO:0000269|PubMed:7197271}; |
| Activity regulation: | |
Regulated by pH: upon acidification, at a pH of 6.3, dinoflagellate luciferin is released from luciferin-binding protein LBP, allowing the interaction between Dinoflagellate luciferase and its substrate luciferin. {ECO:0000269|PubMed:15665092}. |
| Subcellular location: | |
Cytoplasmic vesicle {ECO:0000269|PubMed:15665092}. Note=Localizes in scintillons, specialized organelles formed as outpocketings from the cytoplasm into the acidic vacuole. |
| Domain: | |
Composed of 3 homologous Luciferase domains: each of the individual domains are most active at pH 6.3, and there is very little activity at pH 8.0. {ECO:0000269|PubMed:15665092}. |
| Miscellaneous: | |
Dinoflagellate luciferase mediates much of the bioluminescence in ocean surface waters. {ECO:0000305|PubMed:15665092}. |
| Similarity: | |
Belongs to the calycin superfamily. Luciferase family. {ECO:0000305}. |
Annotations taken from UniProtKB at the EBI.