This gene encodes a protein containing a potential clathrin-binding motif, consensus dileucine signals, and tyrosine-based sorting signals for targeting to vesicles of lysosomal lineage. The encoded protein may play a role in organelle biogenesis associated with melanosomes, platelet dense granules, and lysosomes. Mutations in this gene are associated with Hermansky-Pudlak syndrome type 3. Alternate splice variants exist, but their full length sequence has not been determined. [provided by RefSeq, Jul 2008]
Function:
HPS3 is involved in early stages of melanosome biogenesis and maturation. Defects in HPS3 are the cause of the cocoa (coa) mutant, and of Hermansky-Pudlak syndrome type 3 (HPS3). HPS3 is an autosomal recessive disorder, characterized by oculocutaneous albinism, bleeding due to platelet storage pool deficiency, and lysosomal storage defects. This syndrome results from defects of diverse cytoplasmic organelles including melanosomes, platelet dense granules and lysosomes. Ceroid storage in the lungs is associated with pulmonary fibrosis, a common cause of premature death in individuals with HPS.
Subcellular Location:
Cytoplasmic
SWISS:
Q969F9
Gene ID:
84343
Database links:
Entrez Gene: 84343 Human
Omim: 606118 Human
SwissProt: Q969F9 Human
Unigene: 591311 Human
|
|
