[Effect of Ca2+ on the motility of myosin head in the F-actin-HMM complex].
Using polarization microfluorimetry, the effect of Ca2+ on the mode of interaction between heavy meromyosin labeled with 1.5-IAEDANS and F-actin was studied. The results obtained suggest that both the orientation and motility of myosin heads in the F-actin-heavy meromyosin complex depend on Ca2+ concentration. The experimental results are suggestive of the existence of a myosin-coupled regulatory system in skeletal muscles.
Borovikov
Iu S
IuS
Wrotek
M
M
Aksenova
N B
NB
Lebedeva
N N
NN
Kankol
I
I
D000199:Actins / Q000378:metabolism*; D000818:Animals; D002118:Calcium / Q000378:metabolism*; D005456:Fluorescent Dyes; D009119:Muscle Contraction; D009132:Muscles / Q000378:metabolism*; D015879:Myosin Subfragments / Q000378:metabolism*; D010446:Peptide Fragments / Q000378:metabolism*; D011487:Protein Conformation; D011817:Rabbits
D000199:Actins; D005456:Fluorescent Dyes; D015879:Myosin Subfragments; D010446:Peptide Fragments; D002118:Calcium
Vliianie Ca2+ na podvizhnost' golovki miozina v komplekse F-aktin-TMM.