|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: periplasmic space (sensu Gram-negative Bacteria), cytosol
The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, 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, and some reactions have been computationally balanced for hydrogen by adding free protons. 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.
©2015 SRI International, 333 Ravenswood Avenue, Menlo Park, CA 94025-3493