PMID- 23885665 OWN - NLM STAT- MEDLINE DCOM- 20140213 LR - 20130802 IS - 1873-3778 (Electronic) IS - 0021-9673 (Linking) VI - 1304 DP - 2013 Aug 23 TI - Purification and characterization of recombinant envelope protein GP5 of porcine reproductive and respiratory syndrome virus from E. coli. PG - 133-7 LID - S0021-9673(13)01022-4 [pii] LID - 10.1016/j.chroma.2013.06.079 [doi] AB - The major envelope protein, GP5, in porcine reproductive and respiratory syndrome virus (PRRSV) plays critical roles in the assembly, invasion and immune response of PRRSV particle, and is one of the mostly studied candidates in the development of recombinant vaccines. In this research, a purification process including immobilized metal affinity chromatography (IMAC) and hydrophobic interaction chromatography (HIC) was developed to prepare recombinant envelope protein GP5 with His-tag from an E. coli strain transformed with pGEM-ORF5. The result of cell culture indicated that His-tagged GP5 protein was expressed mainly in soluble form. After cell disruption, His-tagged GP5 protein was successfully purified by Ni(2+)-chelating Sepharose Fast Flow with a yield and purity of 80.5% and 48%, respectively. Recombinant GP5 protein was further purified by HIC to achieve a purity of 95%. Moreover, the purified rGP5 is shown in monomeric form contrasting the dimeric or tetrameric form when purified by a CEX-HIC process directly from PRRSV virions as reported in a previous study. CI - Copyright (c) 2013 Elsevier B.V. All rights reserved. FAU - Liu, Chong AU - Liu C AD - Institute of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China. FAU - Liu, Chun-Jiang AU - Liu CJ FAU - Yuan, Xi-Gang AU - Yuan XG FAU - Zhang, Chenming AU - Zhang C LA - eng PT - Journal Article DEP - 20130704 PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 0 (Metals) RN - 0 (Recombinant Proteins) RN - 0 (Vaccines, Synthetic) RN - 0 (Viral Envelope Proteins) SB - IM MH - Animals MH - Chromatography, Affinity/*methods MH - Cloning, Molecular MH - Escherichia coli/genetics MH - Hydrophobic and Hydrophilic Interactions MH - Metals/chemistry MH - Porcine Reproductive and Respiratory Syndrome/*virology MH - Porcine respiratory and reproductive syndrome virus/*chemistry/genetics MH - Recombinant Proteins/chemistry/genetics/*isolation & purification MH - Swine MH - Vaccines, Synthetic/chemistry/genetics/isolation & purification MH - Viral Envelope Proteins/chemistry/genetics/*isolation & purification OTO - NOTNLM OT - Envelope protein GP5 OT - Histidine-tag OT - Hydrophobic interaction chromatography OT - Immobilized metal affinity chromatography OT - Porcine reproductive and respiratory syndrome virus EDAT- 2013/07/28 06:00 MHDA- 2014/02/14 06:00 CRDT- 2013/07/27 06:00 PHST- 2013/04/19 00:00 [received] PHST- 2013/06/27 00:00 [revised] PHST- 2013/06/30 00:00 [accepted] PHST- 2013/07/27 06:00 [entrez] PHST- 2013/07/28 06:00 [pubmed] PHST- 2014/02/14 06:00 [medline] AID - S0021-9673(13)01022-4 [pii] AID - 10.1016/j.chroma.2013.06.079 [doi] PST - ppublish SO - J Chromatogr A. 2013 Aug 23;1304:133-7. doi: 10.1016/j.chroma.2013.06.079. Epub 2013 Jul 4.