[Expression of glutathione S-transferase-aquaporin 1 carboxyl terminal domain fusion protein in Escherchia coli].
We constructed a recombinant plasmid of water channel protein Aquaporin 1 (AQP1) carboxyl terminal domain (DNA sequence from 700bp-801bp) in pGEX-4T-1 vector and express the carboxyl terminal hydrophilic peptide AQP1 in E. coli. In this study, the DNA sequence of AQP1 hydrophilic peptide was amplified by PCR and was cloned into pGEX-4T-1 expression vector. After identified by restriction enzyme digestion and sequencing, the recombinant clone was transformed into the competent expression cells of E. coli BL21. The GST-AQP1 fusion protein was induced by IPTG and further purified by Glutathione Sepharose 4B to obtain a fusion protein with molecular weight of 30KD. So the fusion protein of AQP1 C-terminal hydrophilic peptide combined with GST was successfully expressed and purified. We set up important bases for the further research in AQP1 gene function.
Li
Xiao Meng
XM
Membrane Channel Research Laboratory, School of Life Sciences, Northeast Normal University, Changchun 130024. lixm441@nenu.edu.cn
Li
Jiang
J
Yang
Nan Yang
NY
Guan
Xin Gang
XG
Zhang
Shu Zhi
SZ
Hui
Wei Li
WL
Ma
Tong Hui
TH
D051398:Aquaporin 1 / Q000737:chemistry / Q000235:genetics* / Q000302:isolation & purification / Q000378:metabolism; D001483:Base Sequence; D003001:Cloning, Molecular; D004926:Escherichia coli / Q000235:genetics* / Q000378:metabolism; D015870:Gene Expression; D005982:Glutathione Transferase / Q000737:chemistry / Q000235:genetics* / Q000302:isolation & purification / Q000378:metabolism; D008969:Molecular Sequence Data; D008970:Molecular Weight; D017434:Protein Structure, Tertiary; D011993:Recombinant Fusion Proteins / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism
D011993:Recombinant Fusion Proteins; D051398:Aquaporin 1; D005982:Glutathione Transferase