A PURIFICATION STRATEGY FOR INOSITOL 1,4,5-TRISPHOSPHATE 3-KINASE FROM RAT-LIVER BASED UPON HEPARIN INTERACTION CHROMATOGRAPHY

被引:12
作者
CONIGRAVE, A
PATWARDHAN, A
BROOMHEAD, L
ROUFOGALIS, B
机构
[1] UNIV SYDNEY,DEPT BIOCHEM,SYDNEY,NSW 2006,AUSTRALIA
[2] UNIV SYDNEY,DEPT PHYSIOL,SYDNEY,NSW 2006,AUSTRALIA
关键词
INS (1,3,4,5)P(4); INS (1,4,5)P(3) 3-KINASE; CALMODULIN; HEPARIN; ENZYME PURIFICATION; RAT LIVER; PYROPHOSPHATE;
D O I
10.1016/0898-6568(92)90070-O
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
Rat liver inositol 1,4,5-trisphosphate [Ins (1,4,5)P3] 3-kinase was purified in high yield by a three-step procedure reliant upon chromatography on heparin and calmodulin agarose. Purified enzyme was' stable in the presence of the detergent 3-[(3-cholamidopropyl)-dimethylammonio]-1-propanesulphonate (CHAPS) (0.1-0.5%) and the sulphhydryl reducing reagent dithiothreitol (DTT). The purified enzyme was activated 2-3-fold by Ca2+ (1-mu-M) in the presence of calmodulin. Pyrophosphate and heparin were identified as inhibitors of the enzyme.
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页码:303 / &
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