Increased PRPP synthetase activity in cu
✍
L. H. Graf Jr.; J. A. McRoberts; T. M. Harrison; D. W. Martin Jr.
📂
Article
📅
1976
🏛
John Wiley and Sons
🌐
English
⚖ 925 KB
## Abstract Nine independently derived clones of mutagenized rat hepatoma cells selected for resistance to 6‐mercaptopurine (6‐MP) or 6‐thioguanine (6‐ThioG) have been isolated. Each has severely reduced catalytic activity of hypoxanthine‐guanine phosphoribosyltransferase (HPRT) and seven of them p