Expression of recombinant buck (Capra hircus) spermadhesin in a prokaryotic system
Keywords:
semen, recombinant protein, cDNAAbstract
The low purification efficiency and the incomplete characterization of buck spermadhesins (Bdhs) prompted us to establish an effective system to produce recombinant Bdhs (rBdhs). The Bdh-4 cDNA was inserted in a prokaryotic expression plasmid pTrcHis TOPO to produce a His6 fusion protein in E. coli Top10 cells. The recombinant clones were selected by growth in ampicillin-containing medium, PCR amplifications and nucleotide sequencing. The recombinant protein synthesis was monitored by SDS-PAGE followed by immunoblotting using a monoclonal anti-His antibody. The expression of the rBdh-4 was achieved at 0.1 to 2.0 mM IPTG after 2 to 6 h of induction. A greater production of rBdh-4 (P < 0.001) was obtained with 0.1 mM IPTG after 2 h of induction. The apparent molecular weight of rBdh-4 was 15.85 ± 0.09 kDa. This result agrees with the theoretical molecular weight of 16.5 kDa predicted from the nucleotide sequence. In conclusion, an effective rBdh-4 expression system was established in order to provide a good tool for studying the biofunctions of buck spermadhesins.Downloads
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Published
2012-03-18
How to Cite
Cajazeiras, J. B., Nascimento, A. S. F. do, Melo, L. M., Albuquerque, Érica S., Rádis-Baptista, G., Freitas, V. J. de F., & Cavada, B. S. (2012). Expression of recombinant buck (Capra hircus) spermadhesin in a prokaryotic system. Revista Brasileira De Biociências, 10(1), 60. Retrieved from https://seer.ufrgs.br/index.php/rbrasbioci/article/view/115603
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