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Comparative properties of arginases

C P Jenkinson1, W W Grody, S D Cederbaum

  • 1Mental Retardation Research Center, University of California, Los Angeles 90024-1759, USA. Jenkinson@biovx2.biology.ucla.edu

Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
|May 1, 1996
PubMed
Summary

Arginase is a vital enzyme found across life, playing key roles in the urea cycle and nitric oxide metabolism. Research is uncovering its diverse functions and evolutionary history in various organisms and human diseases.

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Area of Science:

  • Biochemistry
  • Enzymology
  • Molecular Biology

Background:

  • Arginase is a fundamental enzyme present in all biological kingdoms, crucial for hepatic metabolism and the urea cycle in higher organisms.
  • Extrahepatic arginases, distinct from the hepatic form, are found in various tissues and involved in numerous physiological roles.
  • Recent research highlights arginase's involvement in nitric oxide metabolism, stimulating interest in its multifaceted functions.

Purpose of the Study:

  • To provide a comparative overview of arginases, detailing their properties and functions across different organisms and tissues.
  • To explore the evolutionary aspects of arginase, including sequence comparisons, molecular structures, and catalytic mechanisms.
  • To clarify the role of arginase in human diseases and its implications.

Main Methods:

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  • Comparative analysis of arginase sequences and structures.
  • Review of existing literature on arginase functions in hepatic and extrahepatic tissues.
  • Investigation of arginase involvement in nitric oxide metabolism and human disease pathways.

Main Results:

  • Arginase exhibits diverse roles beyond the urea cycle, particularly in extrahepatic tissues.
  • Molecular biology and comparative studies are revealing the evolutionary pathways and catalytic mechanisms of arginases.
  • Arginase's connection to nitric oxide metabolism and its implication in human diseases are increasingly evident.

Conclusions:

  • Arginase is a versatile enzyme with significant roles in fundamental biological processes and disease.
  • Ongoing research using molecular and comparative approaches continues to elucidate arginase's complex functions and evolution.
  • Understanding arginase is critical for advancing knowledge in biochemistry, physiology, and human health.