1snn
From Proteopedia
| Line 1: | Line 1: | ||
| - | [[Image:1snn.gif|left|200px]] | + | [[Image:1snn.gif|left|200px]] |
| - | + | ||
| - | '''3,4-dihydroxy-2-butanone 4-phosphate synthase from Methanococcus jannaschii''' | + | {{Structure |
| + | |PDB= 1snn |SIZE=350|CAPTION= <scene name='initialview01'>1snn</scene>, resolution 1.55Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=5RP:RIBULOSE-5-PHOSPHATE'>5RP</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene> and <scene name='pdbligand=CA:CALCIUM ION'>CA</scene> | ||
| + | |ACTIVITY= | ||
| + | |GENE= MJ0055 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2190 Methanocaldococcus jannaschii]) | ||
| + | }} | ||
| + | |||
| + | '''3,4-dihydroxy-2-butanone 4-phosphate synthase from Methanococcus jannaschii''' | ||
| + | |||
==Overview== | ==Overview== | ||
| Line 7: | Line 16: | ||
==About this Structure== | ==About this Structure== | ||
| - | 1SNN is a [ | + | 1SNN is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Methanocaldococcus_jannaschii Methanocaldococcus jannaschii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SNN OCA]. |
==Reference== | ==Reference== | ||
| - | Metal sites in 3,4-dihydroxy-2-butanone 4-phosphate synthase from Methanococcus jannaschii in complex with the substrate ribulose 5-phosphate., Steinbacher S, Schiffmann S, Bacher A, Fischer M, Acta Crystallogr D Biol Crystallogr. 2004 Jul;60(Pt 7):1338-40. Epub 2004, Jun 22. PMID:[http:// | + | Metal sites in 3,4-dihydroxy-2-butanone 4-phosphate synthase from Methanococcus jannaschii in complex with the substrate ribulose 5-phosphate., Steinbacher S, Schiffmann S, Bacher A, Fischer M, Acta Crystallogr D Biol Crystallogr. 2004 Jul;60(Pt 7):1338-40. Epub 2004, Jun 22. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15213409 15213409] |
[[Category: Methanocaldococcus jannaschii]] | [[Category: Methanocaldococcus jannaschii]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
| Line 23: | Line 32: | ||
[[Category: riboflavin biosynthesis]] | [[Category: riboflavin biosynthesis]] | ||
| - | ''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 14:07:28 2008'' |
Revision as of 12:07, 20 March 2008
| |||||||
| , resolution 1.55Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , and | ||||||
| Gene: | MJ0055 (Methanocaldococcus jannaschii) | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
3,4-dihydroxy-2-butanone 4-phosphate synthase from Methanococcus jannaschii
Overview
The crystal structure of Methanococcus jannaschii 3,4-dihydroxy-2-butanone 4-phosphate synthase in complex with the substrate ribulose 5-phosphate at a dimetal centre has recently been determined at 1.7 A resolution. The enzyme converts ribulose 5-phosphate into 3,4-dihydroxy-2-butanone 4-phosphate, while its C4 atom is released as formate. The resulting four-carbon body supplies all eight C atoms for the xylene moiety of riboflavin. Three of the four hydroxyl groups of ribulose 5-phosphate were coordinated by the metal ions. Based on crystallographic refinement, the metals were assigned as zinc and calcium, which were present in the crystallization buffer. Neither metal supports the enzymatic reaction. In the present study, the correctness of this assignment is assessed using anomalous diffraction data collected at the high-energy side of the zinc absorption edge (lambda = 1.2823 A). Only the three tentative zinc ions give strong peaks in an anomalous difference Fourier map (>20sigma), whereas the four tentative calcium ions do not show anomalous signals above the noise level. These results confirm the initial assignment. In addition, the resolution was improved to 1.55 A.
About this Structure
1SNN is a Single protein structure of sequence from Methanocaldococcus jannaschii. Full crystallographic information is available from OCA.
Reference
Metal sites in 3,4-dihydroxy-2-butanone 4-phosphate synthase from Methanococcus jannaschii in complex with the substrate ribulose 5-phosphate., Steinbacher S, Schiffmann S, Bacher A, Fischer M, Acta Crystallogr D Biol Crystallogr. 2004 Jul;60(Pt 7):1338-40. Epub 2004, Jun 22. PMID:15213409
Page seeded by OCA on Thu Mar 20 14:07:28 2008
