The protein encoded by this gene anchors the type II regulatory subunit of protein kinase A to the mitochondrion and aids in mitochondrial fission. The encoded protein also appears to be involved in autophagy and melanosome secretion. Variations in this gene may be linked to leprosy. [provided by RefSeq, Dec 2015],
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Function:
Function:Acts as an A-kinase anchoring protein by binding to the type II regulatory subunit of protein kinase A and anchoring it to the mitochondrion. Also involved in synchronization of mitochondrial fission.,similarity:Belongs to the small GTPase superfamily. Rab family.,tissue specificity:Widely expressed with high levels in heart, liver, kidney, bone marrow, testis, colon and fetal lung.,
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Cellular Localization:
Mitochondrion . Mitochondrion outer membrane ; Lipid-anchor . Cytoplasmic vesicle, phagosome . Cytoplasmic vesicle, phagosome membrane ; Lipid-anchor ; Cytoplasmic side . Melanosome . Melanosome membrane . Recruited to phagosomes containing S.aureus or M.tuberculosis (PubMed:21255211). The BLOC-3 complex, a heterodimer of HPS1 and HPS4 promotes its membrane localization (PubMed:23084991). .
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Tissue Expression:
Widely expressed with high levels in heart, liver, kidney, bone marrow, testis, colon and fetal lung.