Nom du corpus

Corpus Systématique Animale

Titre du document

Protein composition of white skeletal muscle from mesopelagic fishes having different water and protein contents

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Poissons_v2b_001385
Auteur(s)
  • J. F. Siebenaller 1
  • P. H. Yancey 2
Affiliation(s)
  • 1) College of Oceanography, Oregon-State University Marine Science Center, 97365, Newport, Oregon, USA
  • 2) Department of Biology, Whitman College, 99362, Walla Walla, Washington, USA
Résumé

The consequences for white skeletal muscle of the whole body variation in water and protein content were examined in 11 mesopelagic fishes taken off the coast of Oregon, USA, in 1983. For such muscles, water content varied from 71 to 91% of muscle wet weight, and protein content ranged from 56 to 141 mg g-1 muscle wet weight, depending on the species. Dilution by increased water content did not account for the decrease in protein content. Total muscle protein was partitioned into soluble (myogen or sarcoplasmic) and insoluble (myofibrillar) components. Both the myogen and myofibrillar components are reduced in muscle with decreased protein content. The activities (units g-1 wet wt) of white muscle L-lactate dehydrogenase and L-malate dehydrogenase are higher in fishes undergoing diel vertical migration to surface waters than in fishes that either do not migrate or do not migrate to surface waters. The differences in enzyme activities are not due to a general dilution of muscle protein. The actin content of white skeletal muscle was maintained at a relatively constant level in all 11 species examined and was similar to actin levels observed previously in the white skeletal muscle of scombrids and demersal fishes. This conservation of actin content requires species with a reduced muscle protein content to maintain a significant fraction of their total protein as actin. The specific activities of the myofibrillar Mg2+?Ca2+-activated adenosine triphosphatases of the mesopelagic species are similar in all 11 species studied. Thus, the ratios of proteins in the isolated myofibrils are probably similar. These results suggest that, in species with decreased muscle protein, there is an increase in the non-myofibrillar form of actin.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - marine biology & hydrobiology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Ecology
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Aquatic Science
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - marine & freshwater biology
Identifiant ISTEX
BCC5D19D025598DA8CDA23045F2A6ADC9573C3AE
Revue

Marine Biology

Année de publication
1984
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
10
Sous-corpus
  • Poissons
Type de publication
Journal
ark:/67375/1BB-235VK2PB-W
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