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  • Title: Anion-exchange analysis of ribulose-bisphosphate carboxylase/oxygenase reactions: CO2/O2 specificity determination and identification of side products.
    Author: Harpel MR, Lee EH, Hartman FC.
    Journal: Anal Biochem; 1993 Mar; 209(2):367-74. PubMed ID: 8470812.
    Abstract:
    An improved anion-exchange chromatographic method for determining the carboxylation/oxygenation specificity (tau) of ribulose 1,5-bisphosphate carboxylase/oxygenase is presented. This assay, which entails radiometric detection of [1-3H]ribulose-bisphosphate turnover products separated on MonoQ anion-exchange resin, is more convenient, less error-prone, and more generally applicable than previous methods of tau determination. It is suitable for both wild-type and site-directed mutant enzymes of widely varying activity and specificity levels and allows simultaneous visualization of various side products of ribulose-bisphosphate processing. A facile method for scrubbing dissolved O2 from carboxylase reaction solutions, which does not require extensive purging and exchange of dissolved gases, is also described.
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