title: [Partial purification and properties of cGMP-dependent protein kinase from prawn tissue].
abstract: Using ion-exchange chromatography and gel filtration, cGMP-dependent protein kinase was purified from prawn tissues 220-fold with a yield of activity of 12%. The apparent Ka values for cGMP, cAMP and 8-Br-cGMP are 1 . 10(-7), 5 . 10(-6) and 5 . 10(-8) M, respectively; the apparent Km values for ATP in the presence of cGMP is 9 . 10(-6) M. The cGMP-stimulated protein kinase activity was observed only in the presence of SH-compounds and high Mg2+ concentrations (500-100 mM). The protein kinase demonstrated a broad pH optimum wih a maximum at pH 6.8-7.2. The elution volume of the enzyme during gel filtration corresponded to a globular protein with molecular weight of 140,000.
mesh_terms: D000818:Animals; D006152:Cyclic GMP / Q000494:pharmacology; D033364:Decapoda / Q000201:enzymology*; D007700:Kinetics; D008970:Molecular Weight; D011494:Protein Kinases / Q000302:isolation & purification* / Q000378:metabolism; D013329:Structure-Activity Relationship
chemical_list: D011494:Protein Kinases; D006152:Cyclic GMP
vernacular_title: Chastichnaia ochistka i izuchenie svoĭstv cGMP-zavisimoĭ proteinkinazy iz tkanei krevetki.