Chicken gizzard: Relation between calcium-activated phosphorylation and contraction

P. E. Hoar; W. Glenn Kerrick; P. S. Cassidy

Chicken gizzard

Relation between calcium-activated phosphorylation and contraction

P. E. Hoar, W. Glenn Kerrick, P. S. Cassidy

Research output: Contribution to journal › Article

96 Citations (Scopus)

Abstract

Of the proteins in mechanically disrupted chicken gizzard fibers (no functional sarcolemma) only the 20,000-dalton light chains of myosin underwent large (a²⁺- and Sr²⁺-dependent changes in phosphorylation. Phosphorylation closely corresponded with the Ca²⁺- and Sr²⁺-activated tensions. Adnosine 5'-O (3'- thiotriphosphate) only in the presence of Ca²⁺ induced irreversible Ca²⁺-insensitive activation of tension and thiophosphorylation of the 20,000-dalton light chains, and blocked incorporation of ³²P from [γ-³²P]adenosine triphosphate into the myosin light chains.

Original language	English
Pages (from-to)	503-506
Number of pages	4
Journal	Science
Volume	204
Issue number	4392
State	Published - Jan 1 1979
Externally published	Yes

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Avian Gizzard

Myosin Light Chains

Chickens

Phosphorylation

Calcium

Sarcolemma

Adenosine Triphosphate

Light

Proteins

ASJC Scopus subject areas

General

Cite this

Hoar, P. E., Kerrick, W. G., & Cassidy, P. S. (1979). Chicken gizzard: Relation between calcium-activated phosphorylation and contraction. Science, 204(4392), 503-506.

Chicken gizzard : Relation between calcium-activated phosphorylation and contraction. / Hoar, P. E.; Kerrick, W. Glenn; Cassidy, P. S.

In: Science, Vol. 204, No. 4392, 01.01.1979, p. 503-506.

Research output: Contribution to journal › Article

Hoar, PE, Kerrick, WG & Cassidy, PS 1979, 'Chicken gizzard: Relation between calcium-activated phosphorylation and contraction', Science, vol. 204, no. 4392, pp. 503-506.

Hoar PE, Kerrick WG, Cassidy PS. Chicken gizzard: Relation between calcium-activated phosphorylation and contraction. Science. 1979 Jan 1;204(4392):503-506.

Hoar, P. E. ; Kerrick, W. Glenn ; Cassidy, P. S. / Chicken gizzard : Relation between calcium-activated phosphorylation and contraction. In: Science. 1979 ; Vol. 204, No. 4392. pp. 503-506.

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