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HPS4

Gene
HPS4
Protein
Hermansky-Pudlak syndrome 4 protein
Organism
Homo sapiens
Length
708 amino acids
Function
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 (PubMed:23084991).
Mass
76.919 kDa
Sequence
MATSTSTEAKSASWWNYFFLYDGSKVKEEGDPTRAGICYFYPSQTLLDQQELLCGQIAGVVRCVSDISDSPPTLVRLRKLKFAIKVDGDYLWVLGCAVELPDVSCKRFLDQLVGFFNFYNGPVSLAYENCSQEELSTEWDTFIEQILKNTSDLHKIFNSLWNLDQTKVEPLLLLKAARILQTCQRSPHILAGCILYKGLIVSTQLPPSLTAKVLLHRTAPQEQRLPTGEDAPQEHGAALPPNVQIIPVFVTKEEAISLHEFPVEQMTRSLASPAGLQDGSAQHHPKGGSTSALKENATGHVESMAWTTPDPTSPDEACPDGRKENGCLSGHDLESIRPAGLHNSARGEVLGLSSSLGKELVFLQEELDLSEIHIPEAQEVEMASGHFAFLHVPVPDGRAPYCKASLSASSSLEPTPPEDTAISSLRPPSAPEMLTQHGAQEQLEDHPGHSSQAPIPRADPLPRRTRRPLLLPRLDPGQRGNKLPTGEQGLDEDVDGVCESHAAPGLECSSGSANCQGAGPSADGISSRLTPAESCMGLVRMNLYTHCVKGLVLSLLAEEPLLGDSAAIEEVYHSSLASLNGLEVHLKETLPRDEAASTSSTYNFTHYDRIQSLLMANLPQVATPQDRRFLQAVSLMHSEFAQLPALYEMTVRNASTAVYACCNPIQETYFQQLAPAARSSGFPNPQDGAFSLSGKAKQKLLKHGVNLL

Gene
Hps4
Protein
Hermansky-Pudlak syndrome 4 protein homolog
Organism
Mus musculus
Length
671 amino acids
Function
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.
Mass
72.662 kDa
Sequence
MATTTPPETKSAAWWNYFFLYDGSKVKGEGDPTRAGICYFYPPQTLLDQQELLCGQLAGVVRCLWDLSGTPPMLIRMRNLKFAIRADGDYLWALGCGVEISDASCRQFLDQLIGFFHFYMGPVSLAYKSHPQEELSLQWDTSITQVLRSTSESHRIFNALWNLDRTKVEPLLLLKAALILQTCQRSPHVLAGCILYKGLIVNSQLLPSLTAKVLLHQTVPADQRLPGAGAAPQETGAALPPDVQITSVFLSEEEVASLHEFPVEHETRLQGSSVQYPPWDQSSPTQAEDAWASAAIPEPTPHDGACPSGSGADERLPRLEQECAGPTGLCTTACGQGSGLSSRLQKELCLSREELDSSEMHVSEAQEAFPPLPALGDLETLHSSHSAPTLPEDTAICSCLHPCPLERLPESGRLGQLADLPLTNGQTQVPGTDPLPSSMPVALPPQHPVGVEPSVEPYGNGAQESHSALPRSSRSPDSPGPSPSADRTGFKPSPSGRHAGLVPMNLYTHSVNGLVLSLLAEETLLSDTAAIEEVYHSSLASLNGLEVHLKETLPRDEASLTSSTYNFLHYDRIQSVLSANLPLVTAPQDRRFLQAVNLMHSDFALLPMLYEMTIRNASTAVYACSSPAQETYFQQLAPTARSSGFPNPQDCAFSLAGKAKQKLLKHGVNLL