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BIBTEX RIS

Changes in thick filament length in Limulus striated muscle.

1977; Rockefeller University Press; Volume: 75; Issue: 2 Linguagem: Inglês

10.1083/jcb.75.2.366

ISSN

1540-8140

Autores

Maynard M. Dewey, Benjamin Walcott, D. Colflesh, Terry Hill, Rhea J. C. Levine,

Tópico(s)

Tardigrade Biology and Ecology

Resumo

Here we describe the change in thick filament length in striated muscle of Limulus, the horseshoe crab. Long thick filaments (4.0 microns) are isolated from living, unstimulated Limulus striated muscle while those isolated from either electrically or K+-stimulated fibers are significantly shorter (3.1 microns) (P less than 0.001). Filaments isolated from muscle glycerinated at long sarcomere lengths are long (4.4 microns) while those isolated from muscle glycerinated at short sarcomere lengths are short (2.9 microns) and the difference is significant (P less than 0.001). Thin filaments are 2.4 microns in length. The shortening of thick filaments is related to the wide range of sarcomere lengths exhibited by Limulus telson striated muscle.

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