[Functional role of parvalbumins in regulating Ca2+ in the contraction--relaxation cycle of vertebrate skeletal muscles].
On the basis of parvalbumin property to change Ca2+-binding constant within the pH-region from approxim-tely 7 to approximately 8 a hypothesis that parvalbumins are pH-regulated Ca2+-depot in muscles has been stated. The addition of parvalbumin to native actomysin complex at pH approximately 7 in the presence of ATP and Ca2+ results in partial inhibition of its superprecipitation. The change of pH up to approximately 8 leads to the restoration of actomyosin superprecipitation.
D000205:Actomyosin; D000255:Adenosine Triphosphate; D000818:Animals; D002118:Calcium; D002347:Carps; D002384:Catalysis; D055598:Chemical Phenomena; D011232:Chemical Precipitation; D002621:Chemistry; D006863:Hydrogen-Ion Concentration; D009119:Muscle Contraction; D009124:Muscle Proteins; D010320:Parvalbumins; D011817:Rabbits
D009124:Muscle Proteins; D010320:Parvalbumins; D000255:Adenosine Triphosphate; D000205:Actomyosin; D002118:Calcium
K voprosu o funktsional'noĭ roli parval'buminov v reguliatsii Ca2+ v tsikle sokrashchenie--rasslablenie v skeletnykh myshtsakh pozvonochnykh.