Isolation and identification of a novel motility-inhibiting factor from goat cauda sperm plasma membrane.

Abstract

A motility inhibiting factor (MIF) in sperm plasma membrane of mammalian spermatozoa (goat) has been demonstrated. This factor has been purified to apparent homogeneity by Sepharose-6B affinity chromatography and DEAE-cellulose ion-exchange chromatography. The molecular weight of the isolated factor has been estimated as 98 kDa by molecular sieving and analytical HPLC. SDS-polyacrylamide gel electrophoresis of MIF gave a single band of 100 kDa, indicating that the factor is a monomer. MIF is a thermo-stable factor and it inhibited the spermatozoa motility in a dose dependent manner. It is a glycoprotein as it binds with high affinity to Sepharose-6B and the affinity matrix-bound factor can be eluted with D-galactose. Data show that the motility inhibiting activity is lost completely when treated with beta-galactosidase indicating that its sugar side chain is essential for its activity. Addition of MIF antibody caused significant enhancement of forward motility of the caput and cauda-spermatoza. This antibody may thus be useful for solving some of the problems of human infertility due to low sperm motility. The motility inhibiting protein may also be useful as a vaginal contraceptive.

Statistics

020040060020072008200920102011201220132014201520162017
Citations per Year

203 Citations

Semantic Scholar estimates that this publication has 203 citations based on the available data.

See our FAQ for additional information.

Cite this paper

@article{Dungdung2003IsolationAI, title={Isolation and identification of a novel motility-inhibiting factor from goat cauda sperm plasma membrane.}, author={Sandhya R Dungdung and G. C. Majumder}, journal={Cellular and molecular biology}, year={2003}, volume={49 3}, pages={413-20} }