| First Author | Kamata T | Year | 1998 |
| Journal | Brain Res Mol Brain Res | Volume | 54 |
| Issue | 2 | Pages | 219-36 |
| PubMed ID | 9555025 | Mgi Jnum | J:47185 |
| Mgi Id | MGI:1202703 | Doi | 10.1016/s0169-328x(97)00332-x |
| Citation | Kamata T, et al. (1998) Isolation and characterization of a bovine neural specific protein (CRMP-2) cDNA homologous to unc-33, a C. elegans gene implicated in axonal outgrowth and guidance. Brain Res Mol Brain Res 54(2):219-36 |
| abstractText | We have cloned the cDNA encoding bovine CRMP-2 from bovine brains. A full length cDNA encoding bovine CRMP-2 was isolated and sequenced. The deduced amino acid sequence reveals that the gene encodes a protein of 572 amino acids and is highly homologous to Caenorhabditis elegans unc-33, which controls the guidance and outgrowth of neuronal axons. The CRMP-2 transcript was present in bovine brains but not non-neural tissues, and its protein product existed in both soluble and membrane-bound forms. The expression of CRMP-2 protein and mRNA was upregulated during neuronal differentiation of rat PC12 cells. Immunoprecipitation of PC12 cell extracts shows that CRMP-2 was co-immunoprecipitated with a 190 kDa protein (p190). Both CRMP-2 and p190 were phosphorylated on serine residues in vivo and in vitro in a kinase assay of CRMP-2 immune complexes. Immunocytochemistry shows that CRMP-2 was exclusively localized in both the central and peripheral nervous systems in mouse embryos and detectable in the adult brain although the level of CRMP-2 decreased. The protein was expressed in the axon, dendrite, and cytoplasm of postmitotic neurons and in the cytoplasm of oligodendrocytes and astrocytes. The CRMP-2 gene maps to the region of mouse chromosome 14 syntenic with human chromosome 8p21. Taken together, these data suggest multi-functional roles for CRMP-2 in developing and adult nervous systems, and the biological activity of CRMP-2 could be regulated by phosphorylation reaction. Copyright 1998 Elsevier Science B.V. |
