title: Enhanced expression of rabies virus surface G-protein in Escherichia coli using SUMO fusion.
abstract: Fusion systems are known to increase the expression of difficult to express recombinant proteins in soluble form to facilitate their purification. Rabies glycoprotein was also tough to express at sufficient level in soluble form in both E. coli and plant. The present work was aimed to over-express and purify this membrane protein from soluble extract of E. coli. Fusion of Small Ubiqutin like Modifier (SUMO) with rabies glycoprotein increased ~1.5 fold higher expression and ~3.0 fold solubility in comparison to non-fused in E. coli. The SUMO fusion also simplified the purification process. Previously engineered rabies glycoprotein gene in tobacco plants provides complete protection to mice, but the expression was very low for purification. Our finding demonstrated that the SUMO-fusion was useful for enhancing expression and solubility of the membrane protein and again proves to be a good alternative technology for applications in biomedical and pharmaceutical research.
authors: Plant Molecular Biology & Genetic Engineering, National Botanical Research Institute (Council of Scientific and Industrial Research), Rana Pratap Marg, Lucknow, 226001, UP, India.
authors: Ankit
authors: A
authors: Singh
authors: Dinesh
authors: D
authors: Yadav
authors: Krishan Mohan
authors: KM
authors: Rai
authors: Meenal
authors: M
authors: Srivastava
authors: Praveen C
authors: PC
authors: Verma
authors: Pradhyumna K
authors: PK
authors: Singh
authors: Rakesh
authors: R
authors: Tuli
mesh_terms: D000818:Animals; D004926:Escherichia coli / Q000235:genetics* / Q000378:metabolism; D015870:Gene Expression; D006801:Humans; D051379:Mice; D008807:Mice, Inbred BALB C; D011820:Rabies virus / Q000235:genetics* / Q000378:metabolism; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism; D025841:Small Ubiquitin-Related Modifier Proteins / Q000235:genetics* / Q000302:isolation & purification / Q000378:metabolism; D014759:Viral Envelope Proteins / Q000235:genetics* / Q000302:isolation & purification / Q000378:metabolism
chemical_list: D011993:Recombinant Fusion Proteins; D025841:Small Ubiquitin-Related Modifier Proteins; D014759:Viral Envelope Proteins