VAPA

VAMP (vesicle-associated membrane protein)-associated protein A, 33kDa
PDB rendering based on 1z9l.
Available structures PDB 1z9l, 1z9o, 2cri
Identifiers
Symbols	VAPA; MGC3745; VAP-33; VAP-A; VAP33; hVAP-33
External IDs	OMIM: 605703 MGI: 1353561 HomoloGene: 37824 GeneCards: VAPA Gene
Gene Ontology Molecular function • signal transducer activity • structural molecule activity • protein binding • protein heterodimerization activity Cellular component • endoplasmic reticulum • endoplasmic reticulum membrane • endoplasmic reticulum membrane • plasma membrane • tight junction • integral to membrane • vesicle • perinuclear region of cytoplasm Biological process • sphingolipid metabolic process • cellular membrane fusion • signal transduction • cell death • neuron projection development • positive regulation of I-kappaB kinase/NF-kappaB cascade • protein localization in endoplasmic reticulum Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	9218	30960
Ensembl	ENSG00000101558	ENSMUSG00000024091
UniProt	Q9P0L0	Q9WV55
RefSeq (mRNA)	NM_003574.5	NM_013933.3
RefSeq (protein)	NP_003565.4	NP_038961.2
Location (UCSC)	Chr 18: 9.91 – 9.96 Mb	Chr 17: 65.93 – 65.96 Mb
PubMed search	[1]	[2]

Vesicle-associated membrane protein-associated protein A is a protein that in humans is encoded by the VAPA gene.

The protein encoded by this gene is a type IV membrane protein. It is present in the plasma membrane and intracellular vesicles. It may also be associated with the cytoskeleton. This protein may function in vesicle trafficking, membrane fusion, protein complex assembly and cell motility. Alternative splicing occurs at this locus and two transcript variants encoding distinct isoforms have been identified.

Interactions

VAPA has been shown to interact with OSBP.

Further reading

• Lapierre LA, Tuma PL, Navarre J, et al. (1999). "VAP-33 localizes to both an intracellular vesicle population and with occludin at the tight junction.". J. Cell. Sci. 112 (21): 3723–32. PMID 10523508. 
• Tu H, Gao L, Shi ST, et al. (1999). "Hepatitis C virus RNA polymerase and NS5A complex with a SNARE-like protein.". Virology 263 (1): 30–41. doi:10.1006/viro.1999.9893. PMID 10544080. 
• Weir ML, Xie H, Klip A, Trimble WS (2001). "VAP-A binds promiscuously to both v- and tSNAREs.". Biochem. Biophys. Res. Commun. 286 (3): 616–21. doi:10.1006/bbrc.2001.5437. PMID 11511104. 
• Wyles JP, McMaster CR, Ridgway ND (2002). "Vesicle-associated membrane protein-associated protein-A (VAP-A) interacts with the oxysterol-binding protein to modify export from the endoplasmic reticulum.". J. Biol. Chem. 277 (33): 29908–18. doi:10.1074/jbc.M201191200. PMID 12023275. 
• Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences.". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=139241. 
• Matsuda A, Suzuki Y, Honda G, et al. (2003). "Large-scale identification and characterization of human genes that activate NF-kappaB and MAPK signaling pathways.". Oncogene 22 (21): 3307–18. doi:10.1038/sj.onc.1206406. PMID 12761501. 
• Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs.". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039. 
• Gao L, Aizaki H, He JW, Lai MM (2004). "Interactions between viral nonstructural proteins and host protein hVAP-33 mediate the formation of hepatitis C virus RNA replication complex on lipid raft.". J. Virol. 78 (7): 3480–8. doi:10.1128/JVI.78.7.3480-3488.2004. PMC 371042. PMID 15016871. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=371042. 
• Evans MJ, Rice CM, Goff SP (2004). "Phosphorylation of hepatitis C virus nonstructural protein 5A modulates its protein interactions and viral RNA replication.". Proc. Natl. Acad. Sci. U.S.A. 101 (35): 13038–43. doi:10.1073/pnas.0405152101. PMC 516513. PMID 15326295. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=516513. 
• Suzuki Y, Yamashita R, Shirota M, et al. (2004). "Sequence comparison of human and mouse genes reveals a homologous block structure in the promoter regions.". Genome Res. 14 (9): 1711–8. doi:10.1101/gr.2435604. PMC 515316. PMID 15342556. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=515316. 
• Gerhard DS, Wagner L, Feingold EA, et al. (2004). "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=528928. 
• Rual JF, Venkatesan K, Hao T, et al. (2005). "Towards a proteome-scale map of the human protein-protein interaction network.". Nature 437 (7062): 1173–8. doi:10.1038/nature04209. PMID 16189514. 
• Hamamoto I, Nishimura Y, Okamoto T, et al. (2005). "Human VAP-B is involved in hepatitis C virus replication through interaction with NS5A and NS5B.". J. Virol. 79 (21): 13473–82. doi:10.1128/JVI.79.21.13473-13482.2005. PMC 1262604. PMID 16227268. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1262604. 
• Kawano M, Kumagai K, Nishijima M, Hanada K (2006). "Efficient trafficking of ceramide from the endoplasmic reticulum to the Golgi apparatus requires a VAMP-associated protein-interacting FFAT motif of CERT.". J. Biol. Chem. 281 (40): 30279–88. doi:10.1074/jbc.M605032200. PMID 16895911.