TYRP1
Tyrp1 catalyzes the oxidation of 5, 6-dihydroxyindole-2-carboxylic acid (DHICA) into indole-5, 6-quinone-2-carboxylic acid. may regulate or influence the type of melanin synthesized. Also to a lower extent, capable of hydroxylating tyrosine and producing melanin.
Full Name
Tyrosinase-Related Protein 1
Function
Plays a role in melanin biosynthesis (PubMed:22556244, PubMed:16704458, PubMed:23504663).
Catalyzes the oxidation of 5,6-dihydroxyindole-2-carboxylic acid (DHICA) into indole-5,6-quinone-2-carboxylic acid in the presence of bound Cu2+ ions, but not in the presence of Zn2+ (PubMed:28661582).
May regulate or influence the type of melanin synthesized (PubMed:22556244, PubMed:16704458).
Also to a lower extent, capable of hydroxylating tyrosine and producing melanin (By similarity).
Biological Process
Biological Process acetoacetic acid metabolic process Source:Ensembl
Biological Process melanin biosynthetic process Source:Reactome
Biological Process melanocyte differentiation Source:GO_Central1 Publication
Biological Process melanosome organization Source:GO_Central1 Publication
Biological Process positive regulation of melanin biosynthetic process Source:CACAO1 Publication
Cellular Location
Melanosome membrane
Located to mature stage III and IV melanosomes and apposed endosomal tubular membranes. Transported to pigmented melanosomes by the BLOC-1 complex. Proper trafficking to melanosome is regulated by SGSM2, ANKRD27, RAB9A, RAB32 and RAB38.
Involvement in disease
Albinism, oculocutaneous, 3 (OCA3):
An autosomal recessive disorder in which the biosynthesis of melanin pigment is reduced in skin, hair, and eyes. Tyrosinase activity is normal and patients have only moderate reduction of pigment. The eyes present red reflex on transillumination of the iris, dilution of color of iris, nystagmus and strabismus. Darker-skinned individuals have bright copper-red coloration of the skin and hair.
Topology
Lumenal: 25-477
Helical: 478-501
Cytoplasmic: 502-537
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