Activation of ribulose 1,5-bisphosphate carboxylase by Ca2+

Parry, Martin A J and Schmidt, C. N Godfrey and Keys, Alfred J. and Gutteridge, Steven (1983) Activation of ribulose 1,5-bisphosphate carboxylase by Ca2+. FEBS Letters, 159 (1-2). pp. 107-111. ISSN 0014-5793

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Abstract

Purified RuBP carboxylase requires activation by reaction with CO2 and a divalent metal ion. Mg2+ is the most effective metal ion, and is probably involved in activation in vivo. Ca2+ is reported not to be an activator. Several oxyanions, including phosphate esters, are effectors of activation of RuBP carboxylase by Co2 and Mg2+. It is now shown that Ca2+ is an effective activator of RuBP carboxylase and that PO4 3-, FBP, NADPH and 6-phosphogluconate are effectors of this activation. The ratio of oxygenase to carboxylase activity of enzyme activated with Ca2+ is similar to that for the enzyme activated with Mg2+.

Item Type:
Journal Article
Journal or Publication Title:
FEBS Letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1300/1311
Subjects:
ID Code:
76061
Deposited By:
Deposited On:
21 Oct 2015 05:04
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 09:25