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 (US) |
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Pages (from-to) | 503-506 |
Number of pages | 4 |
Journal | Science |
Volume | 204 |
Issue number | 4392 |
DOIs | |
State | Published - Jan 1 1979 |
Externally published | Yes |
ASJC Scopus subject areas
- General