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[ATPase and regulatory properties of skeletal muscle myosin in Citellus undulatus susliks during various stages of winter hibernation].
Biofizika 1997 Mar-Apr; 42(2):343-8B

Abstract

The paper is devoted to the study on enzymatic and regulatory properties of skeletal muscle myosin of hibernating ground squirrels (Citellus undulatus) for the purpose of elucidating the contribution of myosin and myosin filaments to the change of physiological state of the animal at the different stages of hibernation (hibernation, arousing, winter activity). It has been revealed that actin-activated ATPase activity of myosins of hibernating and arousing ground squirrels is less by 60 and 20%, correspondingly, than that of the myosin of active animals. In the absence of troponin-tropomyosin complex the Ca(2+)-sensitivity of actomyosins of the hibernating and arousing ground squirrels is less by 60 and 55%, correspondingly, than that of the actomyosin of active animals. The results obtained by us point to the essential decrease of functional properties of the main contractile protein, myosin upon hibernation, which evidently contributes to the inhibition of moving capacity of skeletal muscles at this period.

Authors

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Pub Type(s)

English Abstract
Journal Article

Language

rus

PubMed ID

9172677

Citation

Lukoianova, N A., et al. "[ATPase and Regulatory Properties of Skeletal Muscle Myosin in Citellus Undulatus Susliks During Various Stages of Winter Hibernation]." Biofizika, vol. 42, no. 2, 1997, pp. 343-8.
Lukoianova NA, Ignat'iev DA, Kolaeva SG, et al. [ATPase and regulatory properties of skeletal muscle myosin in Citellus undulatus susliks during various stages of winter hibernation]. Biofizika. 1997;42(2):343-8.
Lukoianova, N. A., Ignat'iev, D. A., Kolaeva, S. G., & Podlubnaia, Z. A. (1997). [ATPase and regulatory properties of skeletal muscle myosin in Citellus undulatus susliks during various stages of winter hibernation]. Biofizika, 42(2), pp. 343-8.
Lukoianova NA, et al. [ATPase and Regulatory Properties of Skeletal Muscle Myosin in Citellus Undulatus Susliks During Various Stages of Winter Hibernation]. Biofizika. 1997;42(2):343-8. PubMed PMID: 9172677.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [ATPase and regulatory properties of skeletal muscle myosin in Citellus undulatus susliks during various stages of winter hibernation]. AU - Lukoianova,N A, AU - Ignat'iev,D A, AU - Kolaeva,S G, AU - Podlubnaia,Z A, PY - 1997/3/1/pubmed PY - 1997/3/1/medline PY - 1997/3/1/entrez SP - 343 EP - 8 JF - Biofizika JO - Biofizika VL - 42 IS - 2 N2 - The paper is devoted to the study on enzymatic and regulatory properties of skeletal muscle myosin of hibernating ground squirrels (Citellus undulatus) for the purpose of elucidating the contribution of myosin and myosin filaments to the change of physiological state of the animal at the different stages of hibernation (hibernation, arousing, winter activity). It has been revealed that actin-activated ATPase activity of myosins of hibernating and arousing ground squirrels is less by 60 and 20%, correspondingly, than that of the myosin of active animals. In the absence of troponin-tropomyosin complex the Ca(2+)-sensitivity of actomyosins of the hibernating and arousing ground squirrels is less by 60 and 55%, correspondingly, than that of the actomyosin of active animals. The results obtained by us point to the essential decrease of functional properties of the main contractile protein, myosin upon hibernation, which evidently contributes to the inhibition of moving capacity of skeletal muscles at this period. SN - 0006-3029 UR - https://www.unboundmedicine.com/medline/citation/9172677/[ATPase_and_regulatory_properties_of_skeletal_muscle_myosin_in_Citellus_undulatus_susliks_during_various_stages_of_winter_hibernation]_ DB - PRIME DP - Unbound Medicine ER -