[Orienting-exploratory behavior: a comparative analysis of the synanthropic and wild-living forms of house mice of the superspecies complex Mus musculus s. lato].

Studies of protein polymorphism, restriction of mitochondrial DNA and karyology revealed two large, divergent groups in Mus musculus s. lato. The first group includes the commensal forms M.

[Separation of catalytic and regulatory subunits of pigeon breast muscle protein kinase].

The separation of catalytic cAMP-independent and regulatory cAMP-binding subunits of pigeon breast muscle protein kinase was performed after the treatment of the holoenzyme by cAMP. The molecular weight of the homogeneous catalytic subunit is determined as 30,000. When catalytic and regulatory subunits were mixed, the decrease of phosphotransferase activity was observed.

[Isolation and some properties of protein kinase from pigeon breast muscle].

Protein kinase was isolated from pigeon breast muscle. The preparation obtained was chromatographically homogeneous. The apparent Km varlue for histone H1 and ATP were 3,5-10(-5) M and 1,6-10(-5) M respectively.

[Study of some properties of rat myocardial pyruvate kinase in adrenaline myocarditis].

Adrenaline myocarditis in rats was accompanied by a decrease in relative activity of pyruvate kinase from hyaloplasm of heart muscle, especially pronounced within 6-13 hrs after adrenaline administration. This phenomenon was probably due to an increase in content of protein in hyaloplasm, but not to an alteration in the enzyme activity. This conclusion was confirmed by studies of some properties of pyruvate kinase.