Life Sciences Commons^™

High Resolution Two Dimensional Electrophoresis Of Soluble Proteins In Human Spermatozoa, Hsing-Ying Liu

Chemistry & Biochemistry Theses & Dissertations

The evaluation of human semen is very important for diagnosis of male infertility. Combined with the analysis of seminal plasma, a comprehensive biochemical screening of human spermatozoan proteins may be of assistance in providing qualitative and quantitative information to the physician to assist with evaluation.

In this study, human spermatozoa were ruptured by sonication. The soluble spermatozoan proteins were separated from the cellular debris by centrifugation and then analyzed in dissociated forms by two dimensional electrophoresis. The separated proteins were visualized by a silver stain method.

It has been shown that these combined techniques can resolve- four to five hundred …

Macrophages Contain At Least Two Myosins, John A. Trotter, Stylianos P. Scordilis, Sarkis S. Margossian

Biological Sciences: Faculty Publications

A number of motile functions of macrophages are thought to be mediated by myosin. We have observed that myosin from rabbit alveolar macrophages is heterogeneous with respect to its 20 kDa light chain: two species of 20 kDa light chain are identified by one-dimensional and two-dimensional polyacrylamide gel electrophoresis, in a ratio of 2:1. Native myosin, analyzed on non-denaturing gels, is also composed of two species, in a ratio of 2:1. These results indicate that macrophages contain at least two different myosins, which might have different physiological functions.