Aldehyde ferredoxin oxidoreductase
Oxford Dictionary of Biochemistry:
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aldehyde ferredoxin oxidoreductase
an enzyme that catalyses the reversible oxidation of aldehydes to the corresponding carboxylic acid, using ferredoxin as an electron acceptor. Containing tungsten-pyranopterin and 4[Fe-45] clusters, the enzyme has remarkable thermostability.
| aldehyde dehydrogenase, aldehyde, aldaric acid | |
| aldehydo-, aldimine, alditol |
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Aldehyde ferredoxin oxidoreductase
| Aldehyde ferredoxin oxidoreductase | |||||||
|---|---|---|---|---|---|---|---|
| Identifiers | |||||||
| EC number | 1.2.7.5 | ||||||
| CAS number | 138066-90-7 | ||||||
| Databases | |||||||
| IntEnz | IntEnz view | ||||||
| BRENDA | BRENDA entry | ||||||
| ExPASy | NiceZyme view | ||||||
| KEGG | KEGG entry | ||||||
| MetaCyc | metabolic pathway | ||||||
| PRIAM | profile | ||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||
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| AFOR_N | |||||||||
|---|---|---|---|---|---|---|---|---|---|
 |
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| structure of a hyperthermophilic tungstopterin enzyme, aldehyde ferredoxin oxidoreductase | |||||||||
| Identifiers | |||||||||
| Symbol | AFOR_N | ||||||||
| Pfam | PF02730 | ||||||||
| InterPro | IPR013983 | ||||||||
| SCOP | 1aor | ||||||||
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| AFOR_C | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| Symbol | AFOR_C | ||||||||
| Pfam | PF01314 | ||||||||
| InterPro | IPR001203 | ||||||||
| SCOP | 1aor | ||||||||
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In enzymology, an aldehyde ferredoxin oxidoreductase (EC 1.2.7.5) is an enzyme that catalyzes the chemical reaction
- an aldehyde + H2O + 2 oxidized ferredoxin
an acid + 2 H+ + 2 reduced ferredoxin
The 3 substrates of this enzyme are aldehyde, H2O, and oxidized ferredoxin, whereas its 3 products are acid, H+, and reduced ferredoxin.
This enzyme belongs to the family of oxidoreductases, specifically those acting on the aldehyde or oxo group of donor with an iron-sulfur protein as acceptor. The systematic name of this enzyme class is aldehyde:ferredoxin oxidoreductase. This enzyme is also called AOR.
Enzymes of the aldehyde ferredoxin oxidoreductase (AOR) family contain a tungsten cofactor and an 4Fe4S cluster.[1][2] This family includes AOR, formaldehyde ferredoxin oxidoreductase (FOR), glyceraldehyde-3-phosphate ferredoxin oxidoreductase (GAPOR), all isolated from hyperthermophilic archea [1]; carboxylic acid reductase found in clostridia [3]; and hydroxycarboxylate viologen oxidoreductase from Proteus vulgaris, the sole member of the AOR family containing molybdenum.[4] GAPOR may be involved in glycolysis,[5] but the functions of the other proteins are not yet clear. AOR has been proposed to be the primary enzyme responsible for oxidising the aldehydes that are produced by the 2-keto acid oxidoreductases.[6]
References
- ^ a b Kisker C, Schindelin H, Rees DC (1997). "Molybdenum-cofactor-containing enzymes: structure and mechanism". Annu. Rev. Biochem. 66: 233–67. doi:10.1146/annurev.biochem.66.1.233. PMID 9242907.
- ^ Kletzin A, Adams MW (March 1996). "Tungsten in biological systems". FEMS Microbiol. Rev. 18 (1): 5–63. PMID 8672295.
- ^ White H, Strobl G, Feicht R, Simon H (September 1989). "Carboxylic acid reductase: a new tungsten enzyme catalyses the reduction of non-activated carboxylic acids to aldehydes". Eur. J. Biochem. 184 (1): 89–96. doi:10.1111/j.1432-1033.1989.tb14993.x. PMID 2550230.
- ^ Trautwein T, Krauss F, Lottspeich F, Simon H (June 1994). "The (2R)-hydroxycarboxylate-viologen-oxidoreductase from Proteus vulgaris is a molybdenum-containing iron-sulphur protein". Eur. J. Biochem. 222 (3): 1025–32. doi:10.1111/j.1432-1033.1994.tb18954.x. PMID 8026480.
- ^ Mukund S, Adams MW (April 1995). "Glyceraldehyde-3-phosphate ferredoxin oxidoreductase, a novel tungsten-containing enzyme with a potential glycolytic role in the hyperthermophilic archaeon Pyrococcus furiosus". J. Biol. Chem. 270 (15): 8389–92. doi:10.1074/jbc.270.15.8389. PMID 7721730.
- ^ Ma K, Hutchins A, Sung SJ, Adams MW (September 1997). "Pyruvate ferredoxin oxidoreductase from the hyperthermophilic archaeon, Pyrococcus furiosus, functions as a CoA-dependent pyruvate decarboxylase". Proc. Natl. Acad. Sci. U.S.A. 94 (18): 9608–13. doi:10.1073/pnas.94.18.9608. PMC 23233. PMID 9275170. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=23233.
Further reading
- Mukund S, Adams MW (1991). "The novel tungsten-iron-sulfur protein of the hyperthermophilic archaebacterium, Pyrococcus furiosus, is an aldehyde ferredoxin oxidoreductase. Evidence for its participation in a unique glycolytic pathway". J. Biol. Chem. 266 (22): 14208–16. PMID 1907273.
- Johnson JL, Rajagopalan KV, Mukund S, Adams MW (1993). "Identification of molybdopterin as the organic component of the tungsten cofactor in four enzymes from hyperthermophilic Archaea". J. Biol. Chem. 268 (7): 4848–52. PMID 8444863.
- Roy R, Menon AL, Adams MW (2001). "Aldehyde oxidoreductases from Pyrococcus furiosus". Methods Enzymol. 331: 132–44. doi:10.1016/S0076-6879(01)31052-2. PMID 11265456.
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This article includes text from the public domain Pfam and InterPro IPR013983
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