|  | |
|  | |
| Names | |
|---|---|
| IUPAC name (hydroxy-(3-methylbut-3-enoxy) phosphoryl)oxyphosphonic acid | |
| Identifiers | |
| 358-71-4   | |
| 3D model (Jmol) | Interactive image | 
| ChEBI | CHEBI:128769   | 
| ChemSpider | 13115335   | 
| MeSH | isopentenyl+pyrophosphate | 
| PubChem | 15983957 | 
| 
 | |
| 
 | |
| Properties | |
| C5H12O7P2 | |
| Molar mass | 246.092 | 
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
|  (what is   ?) | |
| Infobox references | |
Isopentenyl pyrophosphate (IPP, isopentenyl diphosphate, or IDP) is an intermediate in the classical, HMG-CoA reductase pathway (commonly called the mevalonate pathway), and is used by organisms in the biosynthesis of terpenes and terpenoids. IPP is formed from acetyl-CoA via the mevalonate pathway (the "upstream" part), and then is isomerized to dimethylallyl pyrophosphate by the enzyme isopentenyl pyrophosphate isomerase.
IPP can be synthesized via the alternative, non-mevalonate pathway of isoprenoid biosynthesis instead, where it is formed from (E)-4-hydroxy-3-methyl-but-2-enyl pyrophosphate (HMB-PP) by the enzyme HMB-PP reductase (LytB, IspH). The non-mevalonate pathway is utilized by many bacteria, apicomplexan protozoa such as malaria parasites, and the plastids of higher plants.