PHOSPHORAMIDATES .V. PROBABLE IDENTITY OF RAT LIVER MICROSOMAL GLUCOSE 6-PHOSPHATASE PHOSPHORAMIDASE AND PHOSPHORAMIDATE-HEXOSE PHOSPHOTRANSFERASE

被引:38
作者
PARVIN, R
SMITH, RA
机构
[1] Chemistry Department, Biochemistry Division, University of California at Los Angeles, Los Angeles
关键词
D O I
10.1021/bi00832a058
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The microsomal fraction from rat liver and from kidney exhibited phosphoramidase and phosphoramidate-hexose phosphotransferase activities. A comparison of these two enzyme activities with that of glucose 6-phosphatase revealed that all three activities behaved alike under a variety of conditions. Evidence suggesting the involvement of a single enzyme catalyzing these different activities was also obtained by additive experiments and by kinetic data showing mutual competitive inhibitions. Formation of phosphoryl-enzyme from 32P-labeled glucose 6-phosphate supports the suggestion of a phosphoryl-enzyme intermediate in the over-all reaction mechanism. © 1969, American Chemical Society. All rights reserved.
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页码:1748 / &
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