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Presence and tyrosine phosphorylation of c-met receptor in human sperm
tyrosine phosphorylation c-met receptor human sperm
2009/2/18
The c-met receptor is a p190MET tyrosine kinase proto-oncoprotein that through its binding to its ligand, designated hepatocyte growth factor (HGF), induces mitogenic, motogenic, and morphogenic act...
Regulation of sperm function by protein tyrosine phosphorylation in diverse wild felid species
Cat cAMP capacitation
2009/2/18
Protein tyrosine phosphorylation is associated with sperm capacitation and the acrosome reaction in several mammalian species. Changes in phosphorylation of a 95-kDa protein in human, mouse, and d...
Interaction between Ca2+, cyclic 3',5' adenosine monophosphate, the superoxide anion, and tyrosine phosphorylation pathways in the regulation of human sperm capacitation
Calmodulin phosphatase kinase
2009/2/17
In order to fertilize the egg, spermatozoa must go through the capacitation process where they experience Ca2+ uptake, increases in cyclic 3',5' adenosine monophosphate (cAMP) concentrations, supe...
A redox-regulated tyrosine phosphorylation cascade in rat spermatozoa
Epididymal maturation cAMP-dependent phosphorylation
2008/12/29
Rat spermatozoa from both the caput and cauda epididymidis were shown to generate superoxide anion (O2-.) both spontaneously and following stimulation with NAD(P)H. Caput spermatozoa gave a signific...
Specific Order in the Appearance of Protein Tyrosine Phosphorylation Patterns Is Functionally Coordinated With Dog Sperm Hyperactivation and Capacitation
Kinetics hyperactivation membrane destabilization sperm function phosphorylation
2008/12/19
The aims of the present study were to characterize a slow capacitation system that records initial changes in the sperm membrane state, and, using a canine model, to order the specific protein tyros...
β2 Integrin-dependent tyrosine phosphorylation of proline-rich tyrosine kinase 2 in platelet-activating factor-activated eosinophils
degranulation eosinophil β2 integrin PYK-2 tyrosine phosphorylation
2010/11/26
Platelet-activating factor (PAF) can activate various cellular functions, including degranulation in eosinophils. In the present study, we examined tyrosine phosphorylation of intracellular proteins i...