Molecular cloning of TRAF2 binding protein gene and its promoter region from the grass carp Ctenopharyngodon idellus.
A tumor necrosis factor receptor-associated factor 2 binding protein (T2BP) gene was isolated from the grass carp (Ctenopharyngodon idellus) by utilizing suppression subtractive hybridization (SSH) and rapid amplification of cDNA ends (RACE). The grass carp T2BP (GT2BP) gene contains an open reading frame of 579 nucleotide(s) (nt), encoding 193 amino acids, with 23 nt 5'-untranslated region and a long 3'-untranslated region of 434 nt including poly (A), 1 AUUUA motif and 4 AUUUUA motifs. No signal peptide has been detected in the predicted GT2BP, but a characteristic forkhead associated domain is present. The GT2BP mRNA shares 83% identity with the zebrafish DNA sequence, and they both have no introns in the genomic DNA. The putative transcription factor binding sites of GT2BP include two C/ EBP alpha binding sites, and one c-Jun binding, one AP-1 binding, and one nuclear factor kappaB (NF kappaB) binding sites. Southern blot analysis revealed that the GT2BP was a single-copy gene. Individual difference was observed in GT2BP expression in examined organs of healthy grass carp. However, the expression of GT2BP in all examined organs in a fish with the highest copepod infection level and the significantly higher expression level in spleen and liver in infected fish may indicate its up-regulation with the parasite infection.[1]References
- Molecular cloning of TRAF2 binding protein gene and its promoter region from the grass carp Ctenopharyngodon idellus. Chang, M.X., Nie, P., Sun, B.J., Yao, W.J. Vet. Immunol. Immunopathol. (2005) [Pubmed]
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