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. 1981 Sep;78(9):5559–5563. doi: 10.1073/pnas.78.9.5559

X-ray diffraction of strained muscle fibers in rigor.

G R Naylor, R J Podolsky
PMCID: PMC348786  PMID: 6946493

Abstract

The effect of strain on the equatorial x-ray diffraction pattern of glycerinated rabbit psoas fibers was studied in the rigor (ATP free) state. Strains between 30 and 100 A per half sarcomere, measured directly by laser diffraction, did not change the intensity ratio, (10)/ . (11). Because the intensity ratio depends on the distribution of mass within the myofilament lattice, the negative result indicates that strain does not change the angle of attachment of the subfragment 1 (S1) moiety of the myosin molecule to the actin filament. The effect of strain on the ordering of the actin filaments also was considered and judged to be negligible.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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