## Abstract The proteolytic action of boar sperm acrosin on its natural substrate, the zona pellucida, was investigated. Acrosin exhibited substrate specificity for the zona pellucida and differentially hydrolyzed the glycoprotein families composing the zona pellucida. In contrast to acrosin, tryps
Immunological specificity of anti-zona binding to zona pellucida
β Scribed by Sacco, Anthony G.
- Publisher
- John Wiley and Sons
- Year
- 1978
- Tongue
- English
- Weight
- 343 KB
- Volume
- 204
- Category
- Article
- ISSN
- 0022-104X
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
Biochemically purified and F(abβ²)~2~ immunoglobulin fractions were prepared from several antisera, including a human serum, which contained antiβzona pellucida activity. Antizona activity was monitored either by the formation of the antibody produced precipitation layer on the zona following antiserum treatment and/or by the indirect fluorescent antibody method. No changes in antiβzona activity were observed when the purified and the digested immunoglobulin preparations from each antiserum were compared to their whole serum counterparts. It is concluded that antiβzona binding to the zona as well as the formation of the precipitation layer on the zona is the result of a specific antigen antibody reaction.
π SIMILAR VOLUMES
## Abstract IAM38 is the most prominent protein of the inner acrosomal membrane extracellular coat (IAMC) of spermatozoa. It is retained by the inner acrosomal membrane after the acrosome reaction and is implicated in secondary spermβzona binding (Yu et al., Dev Biol2006;290:32β43). Its gene knocko
## Abstract For sperm to fertilize eggs, they must first bind to the thick zona pellucida (ZP) that surrounds the plasma membrane of all unfertilized mammalian eggs. An extensive literature suggests that mouse sperm recognize and bind to a specific ZP glycoprotein called mZP3. However, the role of
## Abstract We have examined the behavior of guinea pig spermatozoa towards the guinea pig zona pellucida in vitro. Experiments were designed to determine whether the state of capacitation or the acrosome reaction determined the ability of the spermatozoa to attach to the zona. Freshly collected ca
## Abstract Sperm acrosomal exocytosis is essential for successful fertilization, and the zona pellucida (ZP) has been classically considered as the primary initiator in vivo. At present, following what is referred to as primary binding of the sperm to the ZP, the acrosome reaction paradigm posits
The clinical utility of a flow cytometric assay (FCA) for intracellular HIV p24 antigen was evaluated in a group of HIV-1-infected subjects. A previously described method, p24-FCA (1), was modified to minimize nonspecific staining and to include irrelevant isotype-matched control antibodies. Blood m