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Abnormal γ-glutamylcysteine synthetase activities in sheep red blood cells

✍ Scribed by Elizabeth M. Tucker; L. Kilgour; C. Crowley; J. D. Young

Publisher: Springer
Year: 1983
Tongue: English
Weight: 604 KB
Volume: 21
Category: Article
ISSN: 0006-2928
DOI: 10.1007/bf00483949

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✦ Synopsis

Red blood cell gamma-glutamylcysteine synthetase (GC-S) activities and glutathione (GSH) concentrations were investigated in pure-bred Finnish Landrace, Tasmanian Merino, and Finnish Landrace X Tasmanian Merino sheep. Previous studies were confirmed that a dominant gene (L) at the GSH locus leads to partial GC-S and GSH deficiency, while a recessive gene (h) at the Tr locus codes for defective red cell amino acid transport, concomitant GSH deficiency, and significantly elevated levels of GC-S. In addition, new results are presented which suggest that there is a dominant gene (A) at another locus distinct from GSH and Tr (provisionally designated GC-S) which has a marked epistatic enhancing effect on measured GC-S activities.

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