Properties of phosphorylated myofibrils from gizzard smooth muscle.

Properties of phosphorylated myofibrils from gizzard smooth muscle. Research Abstract Details 

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Properties of phosphorylated myofibrils from gizzard smooth muscle. Abstract Text:

M Yamaguchi,K Watanabe,

Phosphorylation of chicken gizzard myosin light chain in myofibril and its effect on myofibrillar ATPase activity were investigated in the contracted state of myofibrils. When myofibrils were incubated for two hours at 30 degreeds C with ATP, magnesium and calcium, the myosin light chain was phosphorylated by endogenous light-chain kinase. Standing overnight, the phosphorylated light chain was dephosphorylated by endogenous light-chain phosphatase. Control myofibril had much higher ATPase activity than phosphorylated and phosphorylated-dephosphorylated myofibrils. It was very interesting that the phosphorylated and phosphorylated-dephosphorylated myofibrils were quite similar in ATPase activity. However, phosphorylated myofibril differed from phosphorylated-dephosphorylated myofibril in Ca2+ dependency of Mg2+-ATPase activity. The phosphorylated-dephosphorylated myofibril was not affected by the presence or absence of Ca2+. In contrast, phosphorylated myofibril apparently showed a negative Ca2+-sensitivity. On the other hand, the results indicating that the superprecipitation gel formed by phosphorylated-dephosphorylated myosin could not be dissolved in 0.6 M NaCl, suggest that the phosphorylation-dephosphorylation process of the actomyosin system in gizzard myofibril results in stronger actin-myosin interaction.

Properties of phosphorylated myofibrils from gizzard smooth muscle. Publishing Authors By Initials

M Yamaguchi,K Watanabe,

For similar enzymes and coenzymes: enzymes: transferases: phosphotransferases: phosphotransferases (alcohol group acceptor): protein kinases research abstracts see: enzymes and coenzymes: enzymes: transferases: phosphotransferases: phosphotransferases (alcohol group acceptor): protein kinases research

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Properties of phosphorylated myofibrils from gizzard smooth muscle. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of biochemistry

VOLUME: 87

Page Numbers: 1209-14

Journal Abbreviation: J. Biochem.

ISSN: 0021-924X

DAY: 19

MONTH: Apr

YEAR: 1980

Properties of phosphorylated myofibrils from gizzard smooth muscle. Information

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LANGUAGE: eng

NlmUniqueID: 376600

Properties of phosphorylated myofibrils from gizzard smooth muscle. Keywords Mesh Terms:

KEYWORDS: Protein Kinases

MESH TERMS: metabolism

Chemical & Substance for Abstract: Properties of phosphorylated myofibrils from gizzard smooth muscle. Information

Substance Name: Myosins

Registry Number: EC 3.6.1.4

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Country: JAPAN

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MEDLINETA: J Biochem

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