Linked Life Data

16822336

Source:http://linkedlifedata.com/resource/pubmed/id/16822336

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2006-7-6
pubmed:abstractText
The acrosome reaction is a fundamental event in the biology of the sperm and is a prerequisite to fertilization of the egg. Members of the Rho family of GTPases and their effectors are present in the cytoplasm and/or plasma membrane overlying the acrosome of porcine sperm. We have implicated the Rho family of GTPases and the Rho-activated kinase, ROCK-1, in mediating the zona-pellucida-induced acrosome reaction. Others have implicated the Rho GTPase in regulating the ionophore-induced acrosome reaction in the sperm of several mammalian species as well as in motility of bovine sperm. In this study, the localization of the Rho GTPases (RhoA, RhoB, Rac1 and Cdc42) as well as the effectors RhoGDI, PI(4)P5K and ROCK-1, was determined in boar, human, rat, ram, bull and elephant sperm. The four GTPases were each present in the sperm head of all species examined. RhoGDI was expressed in the head and tail of sperm from all species except pig, where it was present only in the head. PI(4)P5K was expressed in both head and tail of sperm from all species, but expression was typically weaker in the tail. Finally, ROCK-1 was expressed in the heads and tails of all sperm except that of the boar, where it was present only in the acrosomal region. These observations taken together suggest that the expression of Rho GTPases in sperm has been conserved throughout mammalian evolution, most likely due to the role of these GTPases in regulating acrosomal exocytosis.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0967-1994
pubmed:author
pubmed:issnType
Print
pubmed:volume
14
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
249-57
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Localization of the Rho GTPases and some Rho effector proteins in the sperm of several mammalian species.
pubmed:affiliation
Department of Animal Science, One Shields Avenue, University of California, Davis, Davis, CA 95616, USA. carld@pacrepro.com
pubmed:publicationType
Journal Article