Oganesian S S, Kaĭfadzhian M A, Tikunov B A
Zh Evol Biokhim Fiziol. 1990 Sep-Oct;26(5):636-43.
Studies have been made on Mg2(+)-ATPase, Ca2(+)-sensitivity, superprecipitation and fractional composition of natural and desensitized actomyosin from myocardium, slow and fast skeletal muscles after physical training (swimming, gravitational loading) and after monthly readaptation. Physical overloading makes physicochemical properties and protein composition of actomyosin from the myocardium and slow skeletal muscles similar to those in fast skeletal ones. Changes in actomyosin from the myocardium and slow skeletal muscles are more profound, whereas the recovery of the initial properties during readaptation reveals high plasticity of muscles of these phenotypes. Changes in Ca regulation depend mainly on muscle phenotype. Different plasticity of muscles of various phenotypes during readaptation results from differences in the synthesis of protein components of myofibrils.
对经过体育训练（游泳、重力负荷）及每月重新适应后，取自心肌、慢肌和快肌骨骼肌的天然及脱敏的肌动球蛋白的Mg2(+)-ATP酶、Ca2(+)敏感性、超沉淀及组分构成进行了研究。身体超负荷使心肌和慢肌骨骼肌的肌动球蛋白的物理化学性质和蛋白质构成与快肌骨骼肌的相似。心肌和慢肌骨骼肌的肌动球蛋白变化更为显著，而重新适应过程中初始特性的恢复显示出这些表型肌肉的高可塑性。Ca调节的变化主要取决于肌肉表型。重新适应期间不同表型肌肉的不同可塑性源于肌原纤维蛋白质成分合成的差异。
