Purification and characterisation of recombinant His-tagged RgpB gingipain from Porphymonas gingivalis
-
Florian Veillard
, Barbara Potempa
, Yonghua Guo , Miroslaw Ksiazek , Maryta N. Sztukowska , John A. Houston , Lahari Koneru , Ky-Anh Nguyenand Jan Potempa
Abstract
Gingipain proteases are important virulence factors from the periodontal pathogen Porphyromonas gingivalis and are the target of many in vitro studies. Due to their close biochemical properties, purification of individual gingipains is difficult and requires multiple chromatographic steps. In this study, we demonstrate that insertion of a hexahistidine affinity tag upstream of a C-terminal outer membrane translocation signal in RgpB gingipain leads to the secretion of a soluble, mature form of RgpB bearing the affinity tag that can easily be purified by nickel-chelating affinity chromatography. The final product obtained high yielding high purity is biochemically indistinguishable from the native RgpB enzyme.
Acknowledgments
This study was supported by grants from Polish National Science Centre, Poland (2012/04/A/NZ1/00051), US NIH (DE 09761 and DE 022597), the European Commission (FP7-PEOPLE-2011-ITN-290246 ‘RAPID’ and FP7-HEALTH-F3-2012-306029 ‘TRIGGER’), and the Polish Ministry of Science and Higher Education (UMO-2795/7.PR/13/2017/2). MK obtained a doctoral scholarship (2013/08/T/NZ1/00315) from National Science Centre, Poland. The Faculty of Biochemistry, Biophysics and Biotechnology is a partner of the Leading National Research Center (KNOW) supported by the Ministry of Science and Higher Education.
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©2015 by De Gruyter
Articles in the same Issue
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- Proteolysis
- Evolutionary divergence of Threonine Aspartase1 leads to species-specific substrate recognition
- Purification and characterisation of recombinant His-tagged RgpB gingipain from Porphymonas gingivalis
Articles in the same Issue
- Frontmatter
- Reviews
- Sortase-mediated backbone cyclization of proteins and peptides
- Making the LINC: SUN and KASH protein interactions
- Enhancers, enhancers – from their discovery to today’s universe of transcription enhancers
- Minireview
- Recent advances and concepts in substrate specificity determination of proteases using tailored libraries of fluorogenic substrates with unnatural amino acids
- Research Articles/Short Communications
- Genes and Nucleic Acids
- microRNA-210 is involved in the regulation of postmenopausal osteoporosis through promotion of VEGF expression and osteoblast differentiation
- Protein Structure and Function
- C-terminal truncation of a Tat passenger protein affects its membrane translocation by interfering with receptor binding
- Aspartate 496 from the subsite S2 drives specificity of human dipeptidyl peptidase III
- Proteolysis
- Evolutionary divergence of Threonine Aspartase1 leads to species-specific substrate recognition
- Purification and characterisation of recombinant His-tagged RgpB gingipain from Porphymonas gingivalis