Article
Binding of substrate at the effector site of pyrophosphatase increases the rate of its hydrolysis at the active site.
Biochemistry. Biokhimiia - 1 Jan 2007
Sitnik T S, Avaeva S M
Abstract excerpt
It is shown that in addition to the active site, each subunit of Escherichia coli inorganic pyrophosphatase (E-PPase) contains an extra binding site for the substrate magnesium pyrophosphate or its non-hydrolyzable analog magnesium methylenediphosphonate. The occupancy of the extra site stimulates the substrate conversion. Binding affinity of this site decreased or disappeared upon the conversion of E-PPase into...
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