RAB3GAP1

Rab3 GTPase-activating protein catalytic subunit is an enzyme that in humans is encoded by the RAB3GAP1 gene.

RAB3GAP1
Identifiers
Aliases	RAB3GAP1, P130, RAB3GAP, RAB3GAP130, WARBM1, RAB3 GTPase activating protein catalytic subunit 1, MARTS2
External IDs	OMIM: 602536; MGI: 2445001; HomoloGene: 45617; GeneCards: RAB3GAP1; OMA:RAB3GAP1 - orthologs
Gene location (Human) Chr. Chromosome 2 (human) Band 2q21.3 Start 135,052,289 bp End 135,176,667 bp
Gene location (Mouse) Chr. Chromosome 1 (mouse) Band 1|1 E3 Start 127,796,510 bp End 127,871,605 bp
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in hair follicle Brodmann area 23 secondary oocyte endothelial cell middle temporal gyrus visceral pleura tibia pars reticulata parietal pleura entorhinal cortex Top expressed in interventricular septum ventromedial nucleus morula lateral septal nucleus visual cortex primary oocyte mammillary body gastrula median eminence vestibular membrane of cochlear duct More reference expression data BioGPS More reference expression data
Gene ontology Molecular function guanyl-nucleotide exchange factor activity GTPase activator activity protein binding Cellular component cytoplasm Golgi apparatus lipid droplet endoplasmic reticulum tubular network extracellular exosome endoplasmic reticulum membrane postsynapse cytosol protein-containing complex Biological process positive regulation of autophagosome assembly lipid droplet organization regulation of GTPase activity positive regulation of protein lipidation brain development positive regulation of gene expression positive regulation of endoplasmic reticulum tubular network organization hypothalamus development establishment of protein localization to endoplasmic reticulum membrane camera-type eye development face morphogenesis positive regulation of GTPase activity positive regulation of glutamate neurotransmitter secretion in response to membrane depolarization excitatory postsynaptic potential regulation of short-term neuronal synaptic plasticity regulation of calcium ion-dependent exocytosis of neurotransmitter Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 22930 226407 Ensembl ENSG00000115839 ENSMUSG00000036104 UniProt Q15042 Q80UJ7 RefSeq (mRNA) NM_001172435 NM_012233 NM_178690 RefSeq (protein) NP_001165906 NP_036365 NP_848805 NP_001389242 Location (UCSC) Chr 2: 135.05 – 135.18 Mb Chr 1: 127.8 – 127.87 Mb PubMed search
Wikidata
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Function

Members of the RAB3 protein family (see RAB3A; MIM 179490) are implicated in regulated exocytosis of neurotransmitters and hormones. RAB3GAP, which is involved in regulation of RAB3 activity, is a heterodimeric complex consisting a 130-kD catalytic subunit and a 150-kD noncatalytic subunit (MIM 609275). RAB3GAP specifically converts active RAB3-GTP to the inactive form RAB3-GDP (Aligianis et al., 2005).[supplied by OMIM] RAB3GAP is reported to modulate basal and rapamycin-induced autophagy in human fibroblasts and C. elegans. Further, the RAB3GAP1 knockdown has shown to affect the autophagy and mineralization potential of human primary osteoblasts.

See also

• Warburg Micro syndrome
• RAB3GAP2 - the 150-kD noncatalytic subunit of RAB3GAP complex
• Tbc domain

Further reading

• Nomura N, Nagase T, Miyajima N, Sazuka T, Tanaka A, Sato S, Seki N, Kawarabayasi Y, Ishikawa K, Tabata S (1995). "Prediction of the coding sequences of unidentified human genes. II. The coding sequences of 40 new genes (KIAA0041-KIAA0080) deduced by analysis of cDNA clones from human cell line KG-1". DNA Research. 1 (5): 223–229. doi:10.1093/dnares/1.5.223. PMID 7584044.
• Warburg, Mette; Sjö, O; Fledelius, HC; Pedersen, SA (1 December 1993). "Autosomal Recesssive Microcephaly, Microcornea, Congenital Cataract, Mental Retardation, Optic Atrophy, and Hypogenitalism". American Journal of Diseases of Children. 147 (12): 1309–12. doi:10.1001/archpedi.1993.02160360051017. PMID 8249951.
• Nagano F, Sasaki T, Fukui K, Asakura T, Imazumi K, Takai Y (Sep 1998). "Molecular cloning and characterization of the noncatalytic subunit of the Rab3 subfamily-specific GTPase-activating protein". The Journal of Biological Chemistry. 273 (38): 24781–24785. doi:10.1074/jbc.273.38.24781. PMID 9733780.
• Oishi, Hideto; Sasaki, Takuya; Nagano, Fumiko; Ikeda, Wataru; Ohya, Takeshi; Wada, Manabu; Ide, Nobuyuki; Nakanishi, Hiroyuki; Takai, Yoshimi (18 December 1998). "Localization of the Rab3 Small G Protein Regulators in Nerve Terminals and Their Involvement in Ca2+-dependent Exocytosis". Journal of Biological Chemistry. 273 (51): 34580–34585. doi:10.1074/jbc.273.51.34580. PMID 9852129.
• Rodríguez Criado G, Rufo M, Gómez de Terreros I (Oct 1999). "A second family with Micro syndrome". Clinical Dysmorphology. 8 (4): 241–245. doi:10.1097/00019605-199910000-00002. PMID 10532171.
• Clabecq A, Henry JP, Darchen F (Oct 2000). "Biochemical characterization of Rab3-GTPase-activating protein reveals a mechanism similar to that of Ras-GAP". The Journal of Biological Chemistry. 275 (41): 31786–31791. doi:10.1074/jbc.M003705200. PMID 10859313.
• Kawabe, Hiroshi; Sakisaka, Toshiaki; Yasumi, Masato; Shingai, Tatsushi; Izumi, Genkichi; Nagano, Fumiko; Deguchi-Tawarada, Maki; Takeuchi, Masakazu; Nakanishi, Hiroyuki; Takai, Yoshimi (June 2003). "A novel rabconnectin-3-binding protein that directly binds a GDP/GTP exchange protein for Rab3A small G protein implicated in Ca2+-dependent exocytosis of neurotransmitter". Genes to Cells. 8 (6): 537–546. doi:10.1046/j.1365-2443.2003.00655.x. PMID 12786944. S2CID 24111116.
• Cheviet, Séverine; Coppola, Thierry; Haynes, Lee P.; Burgoyne, Robert D.; Regazzi, Romano (1 January 2004). "The Rab-Binding Protein Noc2 Is Associated with Insulin-Containing Secretory Granules and Is Essential for Pancreatic β-Cell Exocytosis". Molecular Endocrinology. 18 (1): 117–126. doi:10.1210/me.2003-0300. PMID 14593078.
• Olsen JV, Blagoev B, Gnad F, Macek B, Kumar C, Mortensen P, Mann M (Nov 2006). "Global, in vivo, and site-specific phosphorylation dynamics in signaling networks". Cell. 127 (3): 635–648. doi:10.1016/j.cell.2006.09.026. PMID 17081983. S2CID 7827573.
• Tsuritani K, Irie T, Yamashita R, Sakakibara Y, Wakaguri H, Kanai A, Mizushima-Sugano J, Sugano S, Nakai K, Suzuki Y (Jul 2007). "Distinct class of putative "non-conserved" promoters in humans: comparative studies of alternative promoters of human and mouse genes". Genome Research. 17 (7): 1005–1014. doi:10.1101/gr.6030107. PMC 1899111. PMID 17567985.