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. 1973 Feb;70(2):320–324. doi: 10.1073/pnas.70.2.320

Mutations Affecting the Structure of Hypoxanthine: Guanine Phosphoribosyltransferase in Cultured Chinese Hamster Cells

A L Beaudet 1,2,3,4, D J Roufa 1,2,3,4, C T Caskey 1,2,3,4
PMCID: PMC433248  PMID: 4119786

Abstract

14 Clones resistant to 8-azaguanine, isolated from mutagenically treated cultured cells from Chinese hamsters, were tested for loss of enzymic and immunological activities of hypoxanthine: guanine phosphoribosyltransferase. Three of the clones had no enzymic activity but reacted strongly with antiserum prepared against the enzyme (CRM+), indicating the presence of a defective enzyme protein, probably caused by a mutation in its structural gene. The other 11 mutants had little or no enzymic or immunologic activity. Revertant clones with positive enzymic and crossreacting immunologic activities were derived from both classes of mutants. The antiserum has been used for rapid purification of the phosphoribosyltransferase from Chinese hamster cells by immunoadsorbant affinity chromatography.

Keywords: 8-azaguanine, crossreacting material, antiserum, clones, affinity chromatography

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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