1kzl
From Proteopedia
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|PDB= 1kzl |SIZE=350|CAPTION= <scene name='initialview01'>1kzl</scene>, resolution 2.1Å | |PDB= 1kzl |SIZE=350|CAPTION= <scene name='initialview01'>1kzl</scene>, resolution 2.1Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= | + | |LIGAND= <scene name='pdbligand=CRM:3-[8-((2S,3S,4R)-2,3,4,5-TETRAHYDROXYPENTYL)-2,4,7-TRIOXO-1,3,8-TRIHYDROPTERIDIN-6-YL]PROPANOIC+ACID'>CRM</scene>, <scene name='pdbligand=HG:MERCURY+(II)+ION'>HG</scene> |
| - | |ACTIVITY= [http://en.wikipedia.org/wiki/Riboflavin_synthase Riboflavin synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.5.1.9 2.5.1.9] | + | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Riboflavin_synthase Riboflavin synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.5.1.9 2.5.1.9] </span> |
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1kzl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kzl OCA], [http://www.ebi.ac.uk/pdbsum/1kzl PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1kzl RCSB]</span> | ||
}} | }} | ||
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[[Category: Schott, A K.]] | [[Category: Schott, A K.]] | ||
[[Category: Steinbacher, S.]] | [[Category: Steinbacher, S.]] | ||
| - | [[Category: CRM]] | ||
| - | [[Category: HG]] | ||
[[Category: biosynthesis of riboflavin]] | [[Category: biosynthesis of riboflavin]] | ||
[[Category: ligand binding]] | [[Category: ligand binding]] | ||
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[[Category: x-ray structure]] | [[Category: x-ray structure]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 21:55:51 2008'' |
Revision as of 18:55, 30 March 2008
| |||||||
| , resolution 2.1Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , | ||||||
| Activity: | Riboflavin synthase, with EC number 2.5.1.9 | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Riboflavin Synthase from S.pombe bound to Carboxyethyllumazine
Overview
Riboflavin synthase catalyzes the disproportionation of 6,7-dimethyl-8-ribityllumazine affording riboflavin and 5-amino-6-ribitylamino-2,4(1H,3H)-pyrimidinedione. We have determined the structure of riboflavin synthase from Schizosaccharomyces pombe in complex with the substrate analog, 6-carboxyethyl-7-oxo-8-ribityllumazine at 2.1 A resolution. In contrast to the homotrimeric solution state of native riboflavin synthase, we found the enzyme to be monomeric in the crystal structure. Structural comparison of the riboflavin synthases of S. pombe and Escherichia coli suggests oligomer contact sites and delineates the catalytic site for dimerization of the substrate and subsequent fragmentation of the pentacyclic intermediate. The pentacyclic substrate dimer was modeled into the proposed active site, and its stereochemical features were determined. The model suggests that the substrate molecule at the C-terminal domain donates a four-carbon unit to the substrate molecule bound at the N-terminal domain of an adjacent subunit in the oligomer.
About this Structure
1KZL is a Single protein structure of sequence from Schizosaccharomyces pombe. Full crystallographic information is available from OCA.
Reference
Studies on the reaction mechanism of riboflavin synthase: X-ray crystal structure of a complex with 6-carboxyethyl-7-oxo-8-ribityllumazine., Gerhardt S, Schott AK, Kairies N, Cushman M, Illarionov B, Eisenreich W, Bacher A, Huber R, Steinbacher S, Fischer M, Structure. 2002 Oct;10(10):1371-81. PMID:12377123
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