2010205O06Rik,AU040608,BLOC,BLOC-3,C130020P05Rik,Hermansky-Pudlak syndrome 4 homolog,Hermansky-Pudlak syndrome 4 protein homolog,le,light ear,light-ear protein,mKIAA1667.
Component of the BLOC-3 complex, a complex that acts as a guanine exchange factor (GEF) for RAB32 and RAB38, promotes the exchange of GDP to GTP, converting them from an inactive GDP-bound form into an active GTP-bound form. The BLOC-3 complex plays an important role in the control of melanin production and melanosome biogenesis and promotes the membrane localization of RAB32 and RAB38.