CATH Classification
| Level | CATH Code | Description |
|---|---|---|
|
3 | Alpha Beta |
|
3.40 | 3-Layer(aba) Sandwich |
|
3.40.50 | Rossmann fold |
|
3.40.50.11270 |
Domain Context
CATH Clusters
| Superfamily | 3.40.50.11270 |
| Functional Family | 4-hydroxy-3-methylbut-2-enyl diphosphate reductase |
Enzyme Information
| 1.17.7.4 |
4-hydroxy-3-methylbut-2-enyl diphosphate reductase.
based on mapping to UniProt P62623
(1) Isopentenyl diphosphate + 2 oxidized ferredoxin [iron-sulfur] cluster + H(2)O = (E)-4-hydroxy-3-methylbut-2-en-1-yl diphosphate + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H(+). (2) Dimethylallyl diphosphate + 2 oxidized ferredoxin [iron-sulfur] cluster + H(2)O = (E)-4-hydroxy-3-methylbut-2-en-1-yl diphosphate + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H(+).
-!- Forms a system with a ferredoxin or a flavodoxin and an NAD(P)H-dependent reductase. -!- This is the last enzyme in the non-mevalonate pathway for isoprenoid biosynthesis. -!- This pathway, also known as the 1-deoxy-D-xylulose 5-phosphate (DOXP) or as the 2-C-methyl-D-erythritol-4-phosphate (MEP) pathway, is found in most bacteria and in plant chloroplasts. -!- The enzyme acts in the reverse direction, producing a 5:1 mixture of isopentenyl diphosphate and dimethylallyl diphosphate. -!- Formerly EC 1.17.1.2.
|
UniProtKB Entries (1)
| P62623 |
ISPH_ECOLI
Escherichia coli K-12
4-hydroxy-3-methylbut-2-enyl diphosphate reductase
|
PDB Structure
| PDB | 4EB3 |
| External Links | |
| Method | X-RAY DIFFRACTION |
| Organism | |
| Primary Citation |
Are free radicals involved in IspH catalysis? An EPR and crystallographic investigation.
J.Am.Chem.Soc.
|
