The incorporation of isotopically labelled glycine into glutathione of erythrocytes with glucose-6-phosphate dehydrogenase deficiency

Aryeh Szeinberg, Avinoam Adam, Bracha Ramot, Chaim Sheba, Fanny Myers

Research output: Contribution to journalArticlepeer-review

Abstract

1. 1. Cysteine decreases the reduced glutathione level in normal red blood cells incubated under aerobic conditions in a glucose-free incubation medium. 2. 2. Cysteine has a similar effect in cells deficient in glucose-6-phosphate dehydrogenase, even in the presence of glucose. 3. 3. Investigations of the rate of glycine incorporation into glutathione of normal erythrocytes under aerobic conditions should be conducted in the presence of glucose when the incubation mixture contains cysteine. The glucose may be replaced by fructose, galactose or inosine. Cysteine should be omitted altogether from the incubation mixture when cells deficient in glucose-6-phosphate dehydrogenase are investigated. 4. 4. The rate of incorporation of glycine into glutathione in deficient cells was found to be lower than in normal cells. The possible causes of this difference are discussed.

Original languageEnglish
Pages (from-to)65-73
Number of pages9
JournalBBA - Biochimica et Biophysica Acta
Volume36
Issue number1
DOIs
StatePublished - Nov 1959
Externally publishedYes

Bibliographical note

Funding Information:
This investigationh as been supportedb y grants from the Blood Research FoundationW, ashingtonD, .C., and from the RockefelleFr oundation.

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