1FDI image
Entry Detail
PDB ID:
1FDI
Keywords:
OXIDOREDUCTASE
Title:
OXIDIZED FORM OF FORMATE DEHYDROGENASE H FROM E. COLI COMPLEXED WITH THE INHIBITOR NITRITE
Biological Source:
Source Organism:
Escherichia coli
Host Organism:
Escherichia coli
PDB Version:
Deposition Date:
1997-01-28
Release Date:
1997-08-20
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.90 Å
R-Value Free:
0.28
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
P 41 21 2
1FDI validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:FORMATE DEHYDROGENASE H
Chain IDs:A
Chain Length:715
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P07658 Pfam ID:PF04879, PF00384, PF01568 EC:1.17.1.9
Ligand Molecules
6MO
MGD
NO2
SF4
Primary Citation
Crystal structure of formate dehydrogenase H: catalysis involving Mo, molybdopterin, selenocysteine, and an Fe4S4 cluster.
Science 275 1305 1308 (1997)
PMID: 9036855 DOI: 10.1126/science.275.5304.1305

Abstact

Formate dehydrogenase H from Escherichia coli contains selenocysteine (SeCys), molybdenum, two molybdopterin guanine dinucleotide (MGD) cofactors, and an Fe4S4 cluster at the active site and catalyzes the two-electron oxidation of formate to carbon dioxide. The crystal structures of the oxidized [Mo(VI), Fe4S4(ox)] form of formate dehydrogenase H (with and without bound inhibitor) and the reduced [Mo(IV), Fe4S4(red)] form have been determined, revealing a four-domain alphabeta structure with the molybdenum directly coordinated to selenium and both MGD cofactors. These structures suggest a reaction mechanism that directly involves SeCys140 and His141 in proton abstraction and the molybdenum, molybdopterin, Lys44, and the Fe4S4 cluster in electron transfer.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
1FDI