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.
MeSH Terms
Animals
Arthropods/analysis,physiology
Crustacea/analysis
Electrophoresis, Polyacrylamide Gel
Hemiptera/analysis
Horseshoe Crabs/analysis
Mollusca/analysis,physiology
Muscle Contraction
Muscles/analysis
Nephropidae/analysis
Thoracica/analysis
Tropomyosin/analysis,physiology
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Levine R J
Elfvin M
Dewey M M
Walcott B
References (16)
16 references, click to expand
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