Four cross-bridge strands and high paramyosin content in the myosin filaments of honey bee flight muscles

Autor:	G. Beinbrech, P. Hinkel, S. Hinkel-Aust
Rok vydání:	1990
Předmět:	Pharmacology Meromyosin Myosin filament macromolecular substances Cell Biology Anatomy Biology Microfilament Sarcomere Cellular and Molecular Neuroscience Myosin head parasitic diseases Myosin Biophysics Molecular Medicine Myofibril Molecular Biology Actin
Zdroj:	Experientia. 46:872-874
ISSN:	1420-9071 0014-4754
DOI:	10.1007/bf01935543
Popis:	Measurements of the mass ratio of myosin to paramyosin of myofibrils of honey bee flight muscles on sodium dodecyl sulphate-polyacrylamide gels yielded a paramyosin content of 24% of the myosin filament mass. Based on the myosin to actin mass ratio of 2.3, and 3 actin filaments per myosin filament and per half sarcomere, it could be calculated that there were 3.8 myosin molecules repeating regularly at intervals of 14.4 nm along the myosin filament. In spite of the high paramyosin content the diameter of the myosin filaments is 19–20 nm, as in other insect flight muscles.
Databáze:	OpenAIRE
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