Volume 43, Issue 17 p. 3458-3466
RESEARCH ARTICLE

Novel affinity chromatography method for the efficient purification of recombinant Binder of SPerm homolog proteins

Samin Sabouhi Zarafshan

Corresponding Author

Samin Sabouhi Zarafshan

Maisonneuve-Rosemont Hospital Research Centre, Montreal, Quebec, Canada

Department of Biochemistry and Molecular Medicine, Faculty of Medicine, University of Montreal, Montreal, Quebec, Canada

Correspondence

Samin Sabouhi Zarafshan, Centre de Recherche de l'Hôpital Maisonneuve-Rosemont, 5415 boulevards de L'Assomption, Montreal, Quebec, Canada, H1T 2M4

Email: [email protected]

Puttaswamy Manjunath

Email: [email protected]

Search for more papers by this author
Puttaswamy Manjunath

Corresponding Author

Puttaswamy Manjunath

Maisonneuve-Rosemont Hospital Research Centre, Montreal, Quebec, Canada

Department of Biochemistry and Molecular Medicine, Faculty of Medicine, University of Montreal, Montreal, Quebec, Canada

Correspondence

Samin Sabouhi Zarafshan, Centre de Recherche de l'Hôpital Maisonneuve-Rosemont, 5415 boulevards de L'Assomption, Montreal, Quebec, Canada, H1T 2M4

Email: [email protected]

Puttaswamy Manjunath

Email: [email protected]

Search for more papers by this author
First published: 03 July 2020

Abstract

In mammalian species, a family of proteins named the Binder of SPerm proteins, which are expressed in the male reproductive tract, have been shown to play a role in epididymal sperm maturation and sperm capacitation. Recently, one homolog from human and two homologs from mouse were characterized. In order to further investigate the biochemical activity of these proteins, efficient purification procedures are required to isolate the proteins. Since these proteins are produced in very minute quantities, we exploited the high capacity of Escherichia coli to produce larger quantities of recombinant proteins that were subsequently purified using affinity chromatography on a diethylaminoethyl-Sephadex A-25 column. Binder of SPerm proteins have been shown to interact with pseudo-choline groups such as diethylaminoethyl through affinity rather than ionic interactions. The aim of the current study was to develop a novel method for purifying these recombinant proteins, produced in Escherichia coli cells. Diethylaminoethyl is positively charged and is a weak anion exchanger, but binder of sperm proteins interacts with affinity to this resin. This study presents a new, rapid, and cost-effective purification method that provides with an exceptional purity level, which can be used to study their roles in mammalian fertilization.

CONFLICT OF INTEREST

The authors have declared no conflict of interest.