{"metadata":{"accession":"Q8BHD0","id":"RB39A_MOUSE","source_organism":{"taxId":"10090","scientificName":"Mus musculus","fullName":"Mus musculus (Mouse)"},"name":"Ras-related protein Rab-39A","description":["The small GTPases Rab are key regulators of intracellular membrane trafficking, from the formation of transport vesicles to their fusion with membranes. Rabs cycle between an inactive GDP-bound form and an active GTP-bound form that is able to recruit to membranes different sets of downstream effectors directly responsible for vesicle formation, movement, tethering and fusion (By similarity). RAB39A regulates autophagosome-lysosome fusion via recruitment of the HOPS endosomal tethering complex onto lysosomes; this process involves lysosomal RAB39A and autophagosomal RAB2A recruitment of HOPS subcomplexes VPS41-VPS16-VPS18-VPS33A and VPS39-VPS11, respectively, which assemble into a functional complex to mediate membrane tethering and SNAREs-driven membrane fusion (By similarity). Also negatively regulates lipopolysaccharide (LPS)-induced autophagosome formation in macrophages, possibly by implicating PI3K (By similarity). Promotes the delivery of MHC-I molecules from the ER to phagosomes and the generation of peptide-loaded MHC-I complexes in phagosomes, thus enhancing antigen cross-presentation by dendritic cells (PubMed:31821587). Plays a role in the maturation and acidification of phagosomes that engulf pathogens, such as S.aureus and M.tuberculosis. Plays a role in the fusion of phagosomes with lysosomes (By similarity). May be involved in multiple neurite formation (PubMed:23624502)"],"length":217,"sequence":"METIWIYQFRLIVIGDSTVGKSCLLHRFTQGRFPGLHSPACDPTVGVDFFSRLLEIEPGKRIKLQLWDTAGQERFRSITRSYYRNSVGGFLVFDITNRRSFEHVKDWLEEAKMHVQPFQIVFLLVGHKCDLASQRQVSREEAERLSTDCGMKYIETSAKDATNVEESFTILTRDIYELIKKGEICIQDGWEGVKSGFVPNTVHSSEEAVKPRKECFC","proteome":"UP000000589","gene":"Rab39a","go_terms":[{"identifier":"GO:0003924","name":"GTPase activity","category":{"code":"F","name":"molecular_function"}},{"identifier":"GO:0005525","name":"GTP binding","category":{"code":"F","name":"molecular_function"}},{"identifier":"GO:0032482","name":"Rab protein signal transduction","category":{"code":"P","name":"biological_process"}}],"protein_evidence":1,"source_database":"reviewed","is_fragment":false,"in_alphafold":true,"in_bfvd":false,"ida_accession":"31aa1b32c82271990f81b4779ae58d1cb9b14b00","counters":{"domain_architectures":273930,"entries":19,"isoforms":0,"proteomes":1,"sets":2,"structures":0,"taxa":1,"dbEntries":{"profile":3,"smart":4,"cathgene3d":1,"ncbifam":1,"ssf":1,"cdd":1,"pfam":1,"panther":1,"prints":1,"interpro":5},"proteome":1,"taxonomy":1,"similar_proteins":273930}}}