Brain-specific angiogenesis inhibitor 3 is a protein that in humans is encoded by the BAI3gene.
BAI1, a p53-target gene, encodes brain-specific angiogenesis inhibitor, a seven-span transmembrane protein and is thought to be a member of the secretin receptor family. Brain-specific angiogenesis proteins BAI2 and BAI3 are similar to BAI1 in structure, have similar tissue specificities and may also play a role in angiogenesis.
The adhesion GPCR BaI3 is an orphan receptor that has a long N-terminus consisting of one cub domain, five BaI Thrombospondin type 1 repeats, and one hormone binding domain. BaI3 is expressed in neural tissues of the central nervous system. BaI3 has been shown to have a high affinity for C1q proteins. C1q added to hippocampal neurons expressing BaI3 resulted in a decrease in the number of synapses.
^Marc F. Bolliger, David C. Martinelli, and Thomas C. Südhof. The cell-adhesion G protein-coupled receptor BAI3 is a high-affinity receptor for C1q-like proteins. PNAS 2011 ; published ahead of print January 24, 2011, doi:10.1073/pnas.1019577108
Nakajima D, Okazaki N, Yamakawa H et al. (2003). "Construction of expression-ready cDNA clones for KIAA genes: manual curation of 330 KIAA cDNA clones.". DNA Res.9 (3): 99–106. doi:10.1093/dnares/9.3.99. PMID12168954.
Nagase T, Ishikawa K, Miyajima N et al. (1998). "Prediction of the coding sequences of unidentified human genes. IX. The complete sequences of 100 new cDNA clones from brain which can code for large proteins in vitro.". DNA Res.5 (1): 31–9. doi:10.1093/dnares/5.1.31. PMID9628581.
Bjarnadóttir TK, Fredriksson R, Höglund PJ et al. (2005). "The human and mouse repertoire of the adhesion family of G-protein-coupled receptors.". Genomics84 (1): 23–33. doi:10.1016/j.ygeno.2003.12.004. PMID15203201.