Brain and Liver Glutamine Synthetase of Rana catesbeiana and Rana cancrivora.

Abstract

Enzyme assays using the gamma-glutamyl transferase method provided estimates of glutamine synthetase activity in brain and liver tissues of Rana catesbeiana and Rana cancrivora. Glutamine synthetase specific activity in liver and brain tissues were not significantly different between these species. In the salt-eater frog R. cancrivora, liver glutamine synthetase activity is insufficient to produce enough glutamine to supply the urea cycle with a nitrogen source. The pathway involving glutamine as a nitrogen source for urea production in marine chondrichthian fishes is not valid in the marine amphibian, Rana cancrivora.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1983
Accession Number
ADA131077

Entities

People

  • James T. Webb

Organizations

  • United States Air Force Academy

Tags

DTIC Thesaurus Topics

  • Air Force
  • Amines
  • Amphibians
  • Assimilation
  • Colorado
  • Fish
  • Fresh Water
  • Glutamine
  • Nitrogen Compounds
  • Salt Water
  • Sea Water
  • Security
  • Standards
  • Transferases
  • United States
  • United States Air Force Academy
  • Water

Fields of Study

  • Biology

Readers

  • Aquatic Ecology
  • Neuroscience
  • Parasitology and Pharmacology of Malaria.