1c0k: Difference between revisions
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[[Image:1c0k.jpg|left|200px]] | [[Image:1c0k.jpg|left|200px]] | ||
'''CRYSTAL STRUCTURE ANALYSIS OF D-AMINO ACID OXIDASE IN COMPLEX WITH L-LACTATE''' | {{Structure | ||
|PDB= 1c0k |SIZE=350|CAPTION= <scene name='initialview01'>1c0k</scene>, resolution 1.46Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene> and <scene name='pdbligand=LAC:LACTIC ACID'>LAC</scene> | |||
|ACTIVITY= [http://en.wikipedia.org/wiki/D-amino-acid_oxidase D-amino-acid oxidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.4.3.3 1.4.3.3] | |||
|GENE= | |||
}} | |||
'''CRYSTAL STRUCTURE ANALYSIS OF D-AMINO ACID OXIDASE IN COMPLEX WITH L-LACTATE''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1C0K is a [ | 1C0K is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Rhodosporidium_toruloides Rhodosporidium toruloides]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1C0K OCA]. | ||
==Reference== | ==Reference== | ||
The x-ray structure of D-amino acid oxidase at very high resolution identifies the chemical mechanism of flavin-dependent substrate dehydrogenation., Umhau S, Pollegioni L, Molla G, Diederichs K, Welte W, Pilone MS, Ghisla S, Proc Natl Acad Sci U S A. 2000 Nov 7;97(23):12463-8. PMID:[http:// | The x-ray structure of D-amino acid oxidase at very high resolution identifies the chemical mechanism of flavin-dependent substrate dehydrogenation., Umhau S, Pollegioni L, Molla G, Diederichs K, Welte W, Pilone MS, Ghisla S, Proc Natl Acad Sci U S A. 2000 Nov 7;97(23):12463-8. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11070076 11070076] | ||
[[Category: D-amino-acid oxidase]] | [[Category: D-amino-acid oxidase]] | ||
[[Category: Rhodosporidium toruloides]] | [[Category: Rhodosporidium toruloides]] | ||
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[[Category: oxidoreductase]] | [[Category: oxidoreductase]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 10:18:18 2008'' | ||
Revision as of 11:18, 20 March 2008
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| , resolution 1.46Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | and | ||||||
| Activity: | D-amino-acid oxidase, with EC number 1.4.3.3 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
CRYSTAL STRUCTURE ANALYSIS OF D-AMINO ACID OXIDASE IN COMPLEX WITH L-LACTATE
OverviewOverview
Flavin is one of the most versatile redox cofactors in nature and is used by many enzymes to perform a multitude of chemical reactions. d-Amino acid oxidase (DAAO), a member of the flavoprotein oxidase family, is regarded as a key enzyme for the understanding of the mechanism underlying flavin catalysis. The very high-resolution structures of yeast DAAO complexed with d-alanine, d-trifluoroalanine, and l-lactate (1.20, 1.47, and 1.72 A) provide strong evidence for hydride transfer as the mechanism of dehydrogenation. This is inconsistent with the alternative carbanion mechanism originally favored for this type of enzymatic reaction. The step of hydride transfer can proceed without involvement of amino acid functional groups. These structures, together with results from site-directed mutagenesis, point to orbital orientation/steering as the major factor in catalysis. A diatomic species, proposed to be a peroxide, is found at the active center and on the Re-side of the flavin. These results are of general relevance for the mechanisms of flavoproteins and lead to the proposal of a common dehydrogenation mechanism for oxidases and dehydrogenases.
About this StructureAbout this Structure
1C0K is a Single protein structure of sequence from Rhodosporidium toruloides. Full crystallographic information is available from OCA.
ReferenceReference
The x-ray structure of D-amino acid oxidase at very high resolution identifies the chemical mechanism of flavin-dependent substrate dehydrogenation., Umhau S, Pollegioni L, Molla G, Diederichs K, Welte W, Pilone MS, Ghisla S, Proc Natl Acad Sci U S A. 2000 Nov 7;97(23):12463-8. PMID:11070076
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