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A comparative analysis of cAMP-dependent protein kinase regulatory subunits in sea urchin and rat spermatozoa
spermatozoa azido photoprobes protein kinase nucleotides epididymis
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2009/2/23
8-Azido cAMP photoaffinity labeling of cAMP-dependent protein kinase regulatory subunits (R1 = 49 K;R2 = 55K) was done on spermatozoa from species lacking, and species containing an epididymis. Sper...
The aging Leydig cell. VIII. Protein kinase activity
The aging Leydig cell Protein kinase activity
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2009/2/19
The effects of aging on cyclic AMP (cAMP) dependent protein kinase activity of purified Leydig cells were evaluated. Purified Leydig cells from 20-day-, 40-day-, 60-day- and 30-month-old rats were...
Protein kinase CK2 activities in human prostatic and seminal-vesicle secretions and seminal plasma
Prostate vasectomy normozoospermia oligozoospermia
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2009/2/18
Human prostatic secretion and seminal plasma contain certain protein kinase activities. Protein kinases play important roles in regulating a vast variety of cellular functions. The objective of this...
Atrial natriuretic factor inhibits the phosphorylation of protein kinase C in plasma membrane preparations of cultured Leydig tumor cells
Atrial natriuretic factor protein kinase C Leydig tumor cells cGMP plasma membranes
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2009/2/12
The peptide hormone atrial natriuretic factor (ANF) exerts its effect in a receptor-mediated fashion and the membrane-bound form of guanylate cyclase represents a biologically active ANF receptor;...
Protein kinase C increases 11beta-hydroxysteroid dehydrogenase oxidation and inhibits reduction in rat Leydig cells
Calcium calmodulin glucocorticoid action oxidoreductases
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2008/12/30
Glucocorticoid hormone controls Leydig cell steroidogenic function through a receptor-mediated mechanism. The enzyme 11beta-hydroxysteroid dehydrogenase (11betaHSD) plays an important role in Leydig...
Stage- and Cell-Specific Expression of Soluble Guanylyl Cyclase Alpha and Beta Subunits, cGMP-Dependent Protein Kinase I Alpha and Beta, and Cyclic Nucleotide-Gated Channel Subunit 1 in the Rat Testis
Cyclic guanosine monophosphate sGC PKG-I CNG-1
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2008/12/23
Several studies suggest that nitric oxide (NO) and cyclic guanosine monophosphate (cGMP) modulate testicular function. In this study, we examined the expression of cGMP-dependent protein kinase ...
Exogenous Protein Kinases A and C, But Not Endogenous Prostasome-Associated Protein Kinase, Phosphorylate Semenogelins I and II From Human Semen
Acid phosphatase histone prostate-specific antigen vasectomy
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2008/12/15
Semenogelins I and II are the quantitatively dominating proteins in human semen. They comprise the major part of the sperm-entrapping gel formed at ejaculation, which subsequently liquefies due to pro...
Activation of Protein Kinase A During Human Sperm Capacitation and Acrosome Reaction
Phosphodiesterases cyclic adenosine monophosphate calcium ionophore A23187 signal transduction
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2008/12/15
Spermatozoa undergo a variety of changes during their life that are prerequisites to their maturation and ability to fertilize eggs. Mammalian sperm capacitation and acrosome reaction are regulated by...
Protein kinase C increases 11beta-hydroxysteroid dehydrogenase oxidation and inhibits reduction in rat Leydig cells
Protein kinase C 11beta-hydroxysteroid dehydrogenase oxidation inhibits rat Leydig cells
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2008/12/1
Glucocorticoid hormone controls Leydig cell steroidogenic function through a receptor-mediated mechanism. The enzyme 11beta-hydroxysteroid dehydrogenase (11betaHSD) plays an important role in Leyd...