TY - JOUR T1 - Prokaryotic Expression of p1 Gene of Yersinia ruckeri Isolated from Channel Catfish (Ictalunes punctatus) and Optimization of Expression Conditions AU - Wang, Kai-Yu AU - Lian, Hai AU - Chen, De-Fang AU - Wang, Jun AU - Huang, Ling-Yuan AU - Li, Cheng-Wei JO - Journal of Animal and Veterinary Advances VL - 11 IS - 20 SP - 3800 EP - 3805 PY - 2012 DA - 2001/08/19 SN - 1680-5593 DO - javaa.2012.3800.3805 UR - https://makhillpublications.co/view-article.php?doi=javaa.2012.3800.3805 KW - Yersinia ruckeri KW -p1 gene KW -prokaryotic expression KW -optimization KW -China AB - The p1 gene of Yersinia ruckeri (yrp1) which was isolated from channel catfish was amplified by PCR with specific primers and inserted into pMD19-T vector. The positive recombinant plasmid was selected and sequenced. Then, the yrp1 gene was subcloned into pET-32a (+) vector and transformed into BL21 (DE3) followed by induction with IPTG and detection with SDS-PAGE. Optimization of the induction conditions were conducted. The results showed that the recombinant protein with a molecular mass of about 72 kDa was mostly packaged into inclusion bodies. The optimization of induction process conditions led us to perform the fusion protein induction at 37°C for 4 h with 0.8 mM IPTG. ER -