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Identification and characterization of FLJ10737 and CAMTA1 genes on the commonly deleted region of neuroblastoma at human chromosome 1p36.31-p36.23.
Tumor suppressor genes of neuroblastoma are located at human chromosome 1p36, 4p16, 11q23.3, and 14q32. We have previously cloned and characterized MFRP and RNF26 genes at 11q23. 3. Here, we searched for genes within the 1p36.31-p36.23 commonly deleted region between microsatellite markers D1S2731 and D1S2666 by using bioinformatics. D1S2731 was located within FLJ10737 gene, consisting of 16 exons. D1S2666 was located within CAMTA1 gene, consisting of 23 exons. FLJ10737 and CAMTA1 genes were located in the head-to-head manner with an interval of about 83 kb. Exons 1-10 of FLJ10737 gene as well as exons 1-5 of CAMTA1 gene were located within the 1p36.31-p36.23 commonly deleted region. FLJ10737 (559 aa) was found to consist of the DnaJ domain, bipartite nuclear localization signal (NLS), FADH domain, and FEMCA domain. Mouse E030019A03, zebrafish MGC55845, Drosophila CG8531 and Arabidopsis At2g35720 were homologs of human FLJ10737. FADH domain was conserved among vertebrate FLJ10737 orthologs as well as human AD-015, mouse Histocompatibility 47, and rat Ratsg2. KIAA0833 was the representative human CAMTA1 cDNA. Nucleotide sequence of mouse Camta1 cDNA was determined in silico by assembling nucleotide sequences of BY733411, BU610694 ESTs and AK122383 cDNA. Human CAMTA1 (1673 aa) and mouse Camta1 (1682 aa) showed 94.1% total-amino-acid identity. CAMTA1 was a Calmodulin-binding transcription activator (CAMTA) family protein, consisting of CG-1 domain, TIG domain, ankyrin repeats, and IQ motifs. FLJ10737 and CAMTA1 genes on 1p36.31-p36.23 are candidate tumor suppressor genes of neuroblastoma.[1]References
- Identification and characterization of FLJ10737 and CAMTA1 genes on the commonly deleted region of neuroblastoma at human chromosome 1p36.31-p36.23. Katoh, M., Katoh, M. Int. J. Oncol. (2003) [Pubmed]
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