BAIAP2

BAI1-associated protein 2
PDB rendering based on 1wdz.
Available structures PDB Ortholog search: PDBe, RCSB List of PDB id codes 1WDZ​, 1Y2O​, 2YKT​, 3RNJ​, 4JS0​
Identifiers
Symbols	BAIAP2 ; BAP2; FLAF3; IRSP53
External IDs	OMIM: 605475 MGI: 2137336 HomoloGene: 9697 GeneCards: BAIAP2 Gene
Gene ontology Molecular function • protein binding • protein C-terminus binding • cytoskeletal adaptor activity • PDZ domain binding • identical protein binding • proline-rich region binding Cellular component • ruffle • nucleoplasm • cytoplasm • cytosol • plasma membrane • actin cytoskeleton • secretory granule • filopodium • neuronal cell body • dendritic spine • extracellular exosome • neuronal postsynaptic density Biological process • plasma membrane organization • small GTPase mediated signal transduction • axonogenesis • insulin receptor signaling pathway • regulation of cell shape • response to bacterium • dendrite development • positive regulation of actin filament polymerization • regulation of actin cytoskeleton organization • Fc-gamma receptor signaling pathway involved in phagocytosis • innate immune response • vascular endothelial growth factor receptor signaling pathway • regulation of synaptic plasticity • actin filament bundle assembly • actin crosslink formation • positive regulation of dendritic spine morphogenesis • positive regulation of actin cytoskeleton reorganization Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	10458	108100
Ensembl	ENSG00000175866	ENSMUSG00000025372
UniProt	Q9UQB8	Q8BKX1
RefSeq (mRNA)	NM_001144888	NM_001037754
RefSeq (protein)	NP_001138360	NP_001032843
Location (UCSC)	Chr 17: 81.04 – 81.12 Mb	Chr 11: 119.94 – 120.01 Mb
PubMed search

Brain-specific angiogenesis inhibitor 1-associated protein 2 is a protein that in humans is encoded by the BAIAP2 gene.^[1][2]

Function

The protein encoded by this gene has been identified as a brain-specific angiogenesis inhibitor (BAI1)-binding protein. This interaction at the cytoplasmic membrane is crucial to the function of this protein, which may be involved in neuronal growth-cone guidance. This protein functions as an insulin receptor tyrosine kinase substrate and suggests a role for insulin in the central nervous system. This protein has also been identified as interacting with the dentatorubral-pallidoluysian atrophy gene, which is associated with an autosomal dominant neurodegenerative disease. It also associates with a downstream effector of Rho small G proteins, which is associated with the formation of stress fibers and cytokinesis. Alternative splicing of the 3'-end of this gene results in three products of undetermined function.^[2]

Interactions

BAIAP2 has been shown to interact with:

• ATN1,^[3]
• CDC42,^[4][5][6]
• EPS8,^[7][8]
• RAC1,^[4]
• SHANK1,^[5]
• WASF1,^[4] and
• WASF2.^[4]

References

1. Oda K, Shiratsuchi T, Nishimori H, Inazawa J, Yoshikawa H, Taketani Y, Nakamura Y, Tokino T (June 1999). "Identification of BAIAP2 (BAI-associated protein 2), a novel human homologue of hamster IRSp53, whose SH3 domain interacts with the cytoplasmic domain of BAI1". Cytogenet Cell Genet 84 (1–2): 75–82. doi:10.1159/000015219. PMID 10343108.
2. "Entrez Gene: BAIAP2 BAI1-associated protein 2".
3. Okamura-Oho Y, Miyashita T, Ohmi K, Yamada M (June 1999). "Dentatorubral-pallidoluysian atrophy protein interacts through a proline-rich region near polyglutamine with the SH3 domain of an insulin receptor tyrosine kinase substrate". Hum. Mol. Genet. 8 (6): 947–57. doi:10.1093/hmg/8.6.947. PMID 10332026.
4. Miki H, Yamaguchi H, Suetsugu S, Takenawa T (Dec 2000). "IRSp53 is an essential intermediate between Rac and WAVE in the regulation of membrane ruffling". Nature 408 (6813): 732–5. doi:10.1038/35047107. PMID 11130076.
5. Soltau M, Richter D, Kreienkamp HJ (Dec 2002). "The insulin receptor substrate IRSp53 links postsynaptic shank1 to the small G-protein cdc42". Mol. Cell. Neurosci. 21 (4): 575–83. doi:10.1006/mcne.2002.1201. PMID 12504591.
6. Krugmann S, Jordens I, Gevaert K, Driessens M, Vandekerckhove J, Hall A (October 2001). "Cdc42 induces filopodia by promoting the formation of an IRSp53:Mena complex". Curr. Biol. 11 (21): 1645–55. doi:10.1016/S0960-9822(01)00506-1. PMID 11696321.
7. Rual JF, Venkatesan K, Hao T, Hirozane-Kishikawa T, Dricot A, Li N, Berriz GF, Gibbons FD, Dreze M, Ayivi-Guedehoussou N, Klitgord N, Simon C, Boxem M, Milstein S, Rosenberg J, Goldberg DS, Zhang LV, Wong SL, Franklin G, Li S, Albala JS, Lim J, Fraughton C, Llamosas E, Cevik S, Bex C, Lamesch P, Sikorski RS, Vandenhaute J, Zoghbi HY, Smolyar A, Bosak S, Sequerra R, Doucette-Stamm L, Cusick ME, Hill DE, Roth FP, Vidal M (October 2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature 437 (7062): 1173–8. doi:10.1038/nature04209. PMID 16189514.
8. Funato Y, Terabayashi T, Suenaga N, Seiki M, Takenawa T, Miki H (August 2004). "IRSp53/Eps8 complex is important for positive regulation of Rac and cancer cell motility/invasiveness". Cancer Res. 64 (15): 5237–44. doi:10.1158/0008-5472.CAN-04-0327. PMID 15289329.

Further reading

• Maruyama K, Sugano S (1994). "Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides". Gene 138 (1–2): 171–4. doi:10.1016/0378-1119(94)90802-8. PMID 8125298.
• Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K; et al. (1997). "Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library". Gene 200 (1–2): 149–56. doi:10.1016/S0378-1119(97)00411-3. PMID 9373149.
• Okamura-Oho Y, Miyashita T, Ohmi K, Yamada M (1999). "Dentatorubral-pallidoluysian atrophy protein interacts through a proline-rich region near polyglutamine with the SH3 domain of an insulin receptor tyrosine kinase substrate". Hum. Mol. Genet. 8 (6): 947–57. doi:10.1093/hmg/8.6.947. PMID 10332026.
• Abbott MA, Wells DG, Fallon JR (1999). "The insulin receptor tyrosine kinase substrate p58/53 and the insulin receptor are components of CNS synapses". J. Neurosci. 19 (17): 7300–8. PMID 10460236.
• Fujiwara T, Mammoto A, Kim Y, Takai Y (2000). "Rho small G-protein-dependent binding of mDia to an Src homology 3 domain-containing IRSp53/BAIAP2". Biochem. Biophys. Res. Commun. 271 (3): 626–9. doi:10.1006/bbrc.2000.2671. PMID 10814512.
• Miki H, Yamaguchi H, Suetsugu S, Takenawa T (2001). "IRSp53 is an essential intermediate between Rac and WAVE in the regulation of membrane ruffling". Nature 408 (6813): 732–5. doi:10.1038/35047107. PMID 11130076.
• Govind S, Kozma R, Monfries C; et al. (2001). "Cdc42hs Facilitates Cytoskeletal Reorganization and Neurite Outgrowth by Localizing the 58-Kd Insulin Receptor Substrate to Filamentous Actin". J. Cell Biol. 152 (3): 579–94. doi:10.1083/jcb.152.3.579. PMC 2195994. PMID 11157984.
• Krugmann S, Jordens I, Gevaert K; et al. (2002). "Cdc42 induces filopodia by promoting the formation of an IRSp53:Mena complex". Curr. Biol. 11 (21): 1645–55. doi:10.1016/S0960-9822(01)00506-1. PMID 11696321.
• Miki H, Takenawa T (2002). "WAVE2 serves a functional partner of IRSp53 by regulating its interaction with Rac". Biochem. Biophys. Res. Commun. 293 (1): 93–9. doi:10.1016/S0006-291X(02)00218-8. PMID 12054568.
• 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.
• Soltau M, Richter D, Kreienkamp HJ (2003). "The insulin receptor substrate IRSp53 links postsynaptic shank1 to the small G-protein cdc42". Mol. Cell. Neurosci. 21 (4): 575–83. doi:10.1006/mcne.2002.1201. PMID 12504591.
• Sekerková G, Loomis PA, Changyaleket B; et al. (2003). "Novel Espin Actin-bundling Proteins Are Localized to Purkinje Cell Dendritic Spines and Bind the SH3 Adapter Protein Insulin Receptor Substrate p53". J. Neurosci. 23 (4): 1310–9. PMC 2854510. PMID 12598619.
• Miyahara A, Okamura-Oho Y, Miyashita T; et al. (2003). "Genomic structure and alternative splicing of the insulin receptor tyrosine kinase substrate of 53-kDa protein". J. Hum. Genet. 48 (8): 410–4. doi:10.1007/s10038-003-0047-x. PMID 12884081.
• Hori K, Konno D, Maruoka H, Sobue K (2003). "MALS is a binding partner of IRSp53 at cell-cell contacts". FEBS Lett. 554 (1–2): 30–4. doi:10.1016/S0014-5793(03)01074-3. PMID 14596909.
• Lehner B, Semple JI, Brown SE; et al. (2004). "Analysis of a high-throughput yeast two-hybrid system and its use to predict the function of intracellular proteins encoded within the human MHC class III region". Genomics 83 (1): 153–67. doi:10.1016/S0888-7543(03)00235-0. PMID 14667819.
• 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.
• Yamagishi A, Masuda M, Ohki T; et al. (2004). "A novel actin bundling/filopodium-forming domain conserved in insulin receptor tyrosine kinase substrate p53 and missing in metastasis protein". J. Biol. Chem. 279 (15): 14929–36. doi:10.1074/jbc.M309408200. PMID 14752106.
• Funato Y, Terabayashi T, Suenaga N; et al. (2004). "IRSp53/Eps8 complex is important for positive regulation of Rac and cancer cell motility/invasiveness". Cancer Res. 64 (15): 5237–44. doi:10.1158/0008-5472.CAN-04-0327. PMID 15289329.
• Jin J, Smith FD, Stark C; et al. (2004). "Proteomic, functional, and domain-based analysis of in vivo 14-3-3 binding proteins involved in cytoskeletal regulation and cellular organization". Curr. Biol. 14 (16): 1436–50. doi:10.1016/j.cub.2004.07.051. PMID 15324660.