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2a59

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Revision as of 06:46, 9 May 2018

Structure of 6,7-Dimethyl-8-ribityllumazine synthase from Schizosaccharomyces pombe mutant W27Y with bound ligand 5-nitroso-6-ribitylamino-2,4(1H,3H)-pyrimidinedione

Structural highlights

2a59 is a 5 chain structure with sequence from Cbs 356. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	1kyy, 2a57, 2a58, 1kyv
Gene:	rib4 (CBS 356)
Activity:	6,7-dimethyl-8-ribityllumazine synthase, with EC number 2.5.1.78
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[RIB4_SCHPO] Catalyzes the formation of 6,7-dimethyl-8-ribityllumazine by condensation of 5-amino-6-(D-ribitylamino)uracil with 3,4-dihydroxy-2-butanone 4-phosphate. This is the penultimate step in the biosynthesis of riboflavin. Also binds riboflavin with an unexpected high affinity.^[1]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The amino acid residue tryptophan 27 of 6,7-dimethyl-8-ribityllumazine synthase of the yeast Schizosaccharomyces pombe was replaced by tyrosine. The structures of the W27Y mutant protein in complex with riboflavin, the substrate analogue 5-nitroso-6-ribitylamino-2,4(1H,3H)-pyrimidinedione, and the product analogue 6-carboxyethyl-7-oxo-8-ribityllumazine, were determined by X-ray crystallography at resolutions of 2.7-2.8 A. Whereas the indole system of W27 forms a coplanar pi-complex with riboflavin, the corresponding phenyl ring in the W27Y mutant establishes only peripheral contact with the heterocyclic ring system of the bound riboflavin. These findings provide an explanation for the absence of the long wavelength shift in optical absorption spectra of riboflavin bound to the mutant enzyme. The structures of the mutants are important tools for the interpretation of the unusual physical properties of riboflavin in complex with lumazine synthase.

Structural basis of charge transfer complex formation by riboflavin bound to 6,7-dimethyl-8-ribityllumazine synthase.,Koch M, Breithaupt C, GerhardtHaase S, Weber S, Cushman M, Huber R, Bacher A, Fischer M Eur J Biochem. 2004 Aug;271(15):3208-14. PMID:15265040^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Fischer M, Haase I, Feicht R, Richter G, Gerhardt S, Changeux JP, Huber R, Bacher A. Biosynthesis of riboflavin: 6,7-dimethyl-8-ribityllumazine synthase of Schizosaccharomyces pombe. Eur J Biochem. 2002 Jan;269(2):519-26. PMID:11856310
↑ Koch M, Breithaupt C, GerhardtHaase S, Weber S, Cushman M, Huber R, Bacher A, Fischer M. Structural basis of charge transfer complex formation by riboflavin bound to 6,7-dimethyl-8-ribityllumazine synthase. Eur J Biochem. 2004 Aug;271(15):3208-14. PMID:15265040 doi:10.1111/j.1432-1033.2004.04253.x

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2a59"

@@ Line 1: / Line 1: @@
 ==Structure of 6,7-Dimethyl-8-ribityllumazine synthase from Schizosaccharomyces pombe mutant W27Y with bound ligand 5-nitroso-6-ribitylamino-2,4(1H,3H)-pyrimidinedione==
 <StructureSection load='2a59' size='340' side='right' caption='[[2a59]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
@@ Line 7: / Line 8: @@
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">rib4 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4896 CBS 356])</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/6,7-dimethyl-8-ribityllumazine_synthase 6,7-dimethyl-8-ribityllumazine synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.5.1.78 2.5.1.78] </span></td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2a59 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2a59 OCA], [http://pdbe.org/2a59 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2a59 RCSB], [http://www.ebi.ac.uk/pdbsum/2a59 PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2a59 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2a59 OCA], [http://pdbe.org/2a59 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2a59 RCSB], [http://www.ebi.ac.uk/pdbsum/2a59 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2a59 ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 15: / Line 16: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/a5/2a59_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/a5/2a59_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

2a59

From Proteopedia

Revision as of 06:46, 9 May 2018

Structure of 6,7-Dimethyl-8-ribityllumazine synthase from Schizosaccharomyces pombe mutant W27Y with bound ligand 5-nitroso-6-ribitylamino-2,4(1H,3H)-pyrimidinedione

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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