Comparative Study
doi: 10.1083/jcb.71.1.273.
Paramyosin in invertebrate muscles. II. Content in relation to structure and function
- PMID: 977650
- PMCID: PMC2109719
- DOI: 10.1083/jcb.71.1.273
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Comparative Study
Paramyosin in invertebrate muscles. II. Content in relation to structure and function
J Cell Biol.
1976 Oct.
Abstract
By quantitative sodium dodecyl sulfate-polyacrylamide gel electrophoresis, paramyosin:myosin heavy chain molecular ratios were calculated for three molluscan muscles:Aequipecten striated adductor, Mercenaria opaque adductor, and Mytilus anterior byssus retractor; and four arthropodan muscles:Limulus telson, Homarus slow claw. Balanus scutal depressor, and Lethocerus air tube retractor. These ratios correlate positively with both thick filament dimensions and maximum active tension development in these tissues. The role of paramyosin in these muscles is discussed with respect to the following characteristics: force development, "catch," and extreme reversible changes in length.
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