1kqf
FORMATE DEHYDROGENASE N FROM E. COLI
OverviewOverview
The structure of the membrane protein formate dehydrogenase-N (Fdn-N), a major component of Escherichia coli nitrate respiration, has been determined at 1.6 angstroms. The structure demonstrates 11 redox centers, including molybdopterin-guanine dinucleotides, five [4Fe-4S] clusters, two heme b groups, and a menaquinone analog. These redox centers are aligned in a single chain, which extends almost 90 angstroms through the enzyme. The menaquinone reduction site associated with a possible proton pathway was also characterized. This structure provides critical insights into the proton motive force generation by redox loop, a common mechanism among a wide range of respiratory enzymes.
About this StructureAbout this Structure
1KQF is a Protein complex structure of sequences from Escherichia coli. Full crystallographic information is available from OCA.
ReferenceReference
Molecular basis of proton motive force generation: structure of formate dehydrogenase-N., Jormakka M, Tornroth S, Byrne B, Iwata S, Science. 2002 Mar 8;295(5561):1863-8. PMID:11884747 Page seeded by OCA on Fri May 2 23:02:46 2008
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- Escherichia coli
- Formate dehydrogenase
- Protein complex
- Byrne, B.
- Iwata, S.
- Jormakka, M.
- Tornroth, S.
- Anaerobic
- Dehydrogenase
- Fe4s4
- Formate
- Integral membrane protein
- Iron sulfur cluster
- Mgd
- Molybdenum
- Molybdopterin
- Molybdopterin guanine dinucleotide
- Mpt
- Oxidoreductase
- Secy
- Selenium
- Selenocysteine