2jcd
From Proteopedia
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==Overview== | ==Overview== | ||
| - | Nitro groups are found in a number of bioactive compounds. Most of them | + | Nitro groups are found in a number of bioactive compounds. Most of them arise by a stepwise mono-oxygenation of amino groups. One of the involved enzymes is AurF participating in the biosynthesis of aureothin. Its structure was established at 2.1 A resolution showing a homodimer with a binuclear manganese cluster. The enzyme preparation, which yielded the analyzed crystals, showed activity using in vitro and in vivo assays. Chain fold and cluster are homologous with ribonucleotide reductase subunit R2 and related enzymes. The two manganese ions and an iron content of about 15% were established by anomalous X-ray diffraction. A comparison of the cluster with more common di-iron clusters suggested an additional histidine in the coordination sphere to cause the preference for manganese over iron. There is no oxo-bridge. The substrate p-amino-benzoate was modeled into the active center. The model is supported by mutant activity measurements. It shows the geometry of the reaction and explains the established substrate spectrum. |
==About this Structure== | ==About this Structure== | ||
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==Reference== | ==Reference== | ||
| - | Structure and | + | Structure and action of the N-oxygenase AurF from Streptomyces thioluteus., Zocher G, Winkler R, Hertweck C, Schulz GE, J Mol Biol. 2007 Oct 12;373(1):65-74. Epub 2007 Jun 9. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=17765264 17765264] |
[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Streptomyces thioluteus]] | [[Category: Streptomyces thioluteus]] | ||
[[Category: Hertweck, C.]] | [[Category: Hertweck, C.]] | ||
| - | [[Category: Schulz, G | + | [[Category: Schulz, G E.]] |
[[Category: Winkler, R.]] | [[Category: Winkler, R.]] | ||
| - | [[Category: Zocher, G | + | [[Category: Zocher, G E.]] |
[[Category: EDO]] | [[Category: EDO]] | ||
[[Category: MN]] | [[Category: MN]] | ||
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[[Category: oxidoreductase]] | [[Category: oxidoreductase]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 18:01:45 2008'' |
Revision as of 16:01, 21 February 2008
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STRUCTURE OF THE N-OXYGENASE AURF FROM STREPTOMYCES THIOLUTEUS
Overview
Nitro groups are found in a number of bioactive compounds. Most of them arise by a stepwise mono-oxygenation of amino groups. One of the involved enzymes is AurF participating in the biosynthesis of aureothin. Its structure was established at 2.1 A resolution showing a homodimer with a binuclear manganese cluster. The enzyme preparation, which yielded the analyzed crystals, showed activity using in vitro and in vivo assays. Chain fold and cluster are homologous with ribonucleotide reductase subunit R2 and related enzymes. The two manganese ions and an iron content of about 15% were established by anomalous X-ray diffraction. A comparison of the cluster with more common di-iron clusters suggested an additional histidine in the coordination sphere to cause the preference for manganese over iron. There is no oxo-bridge. The substrate p-amino-benzoate was modeled into the active center. The model is supported by mutant activity measurements. It shows the geometry of the reaction and explains the established substrate spectrum.
About this Structure
2JCD is a Single protein structure of sequence from Streptomyces thioluteus with and as ligands. Known structural/functional Site: . Full crystallographic information is available from OCA.
Reference
Structure and action of the N-oxygenase AurF from Streptomyces thioluteus., Zocher G, Winkler R, Hertweck C, Schulz GE, J Mol Biol. 2007 Oct 12;373(1):65-74. Epub 2007 Jun 9. PMID:17765264
Page seeded by OCA on Thu Feb 21 18:01:45 2008
