|Superclasses:||Reactions Classified By Conversion Type → Simple Reactions → Chemical Reactions|
|Reactions Classified By Substrate → Small-Molecule Reactions|
EC Number: 18.104.22.168
Reaction Locations: periplasm (sensu Gram-negative Bacteria), cytosol
The direction shown, i.e. which substrates are on the left and right sides, is in accordance with the direction in which it was curated.
Most BioCyc compounds have been protonated to a reference pH value of 7.3. Please see the PGDB Concepts Guide for more information.
Mass balance status: Balanced.
Enzyme Commission Primary Name: inorganic diphosphatase
Enzyme Commission Synonyms: Diphosphate phosphohydrolase, Pyrophosphate phosphohydrolase, Inorganic diphosphatase
This reaction is part of central intermediary metabolism. It provides a thermodynamic pull for biosynthetic reactions that produce pyrophosphate.
Enzyme Commission Summary:
Specificity varies with the source and with the activating metal ion. The enzyme from some sources may be identical with EC 22.214.171.124 (alkaline phosphatase) or EC 126.96.36.199 (glucose-6-phosphatase). A form of this enzyme with a molecular mass of about 90 kDa is found in tonoplasts of plants and fungi, where it imports protons from the cytosol into the vacuolar lumen.
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