Calcium-induced structural changes in chemically skinned muscle fibers. Detection by optical diffractometry.
Biochim Biophys Acta
; 578(2): 526-33, 1979 Jun 19.
Article
en En
| MEDLINE
| ID: mdl-314818
ABSTRACT
The intensity of the first order diffraction line produced by chemically skinned muscle fibers was detected by a self scanning photodiode array and minicomputer system. Line intensity was observed to decrease in fibers stretched to zero filament overlap when subjected to calcium-EGTA buffers in the physiological pCa range. Calcium dependent intensity decreases were not observed for myosin extracted fibers indicating that the thick filament proteins may be the source of the calcium effect seen in non-extracted fibers. These results can be interpreted in terms of calcium dependent effects on thick filament disordering which are not dependent upon cross bridge formation.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Calcio
/
Músculos
Tipo de estudio:
Diagnostic_studies
Límite:
Animals
Idioma:
En
Revista:
Biochim Biophys Acta
Año:
1979
Tipo del documento:
Article