3doo: Difference between revisions
No edit summary |
No edit summary |
||
| Line 2: | Line 2: | ||
<StructureSection load='3doo' size='340' side='right' caption='[[3doo]], [[Resolution|resolution]] 2.20Å' scene=''> | <StructureSection load='3doo' size='340' side='right' caption='[[3doo]], [[Resolution|resolution]] 2.20Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3doo]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3DOO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3DOO FirstGlance]. <br> | <table><tr><td colspan='2'>[[3doo]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Staeq Staeq]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3DOO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3DOO FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SKM:(3R,4S,5R)-3,4,5-TRIHYDROXYCYCLOHEX-1-ENE-1-CARBOXYLIC+ACID'>SKM</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SKM:(3R,4S,5R)-3,4,5-TRIHYDROXYCYCLOHEX-1-ENE-1-CARBOXYLIC+ACID'>SKM</scene></td></tr> | ||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3don|3don]]</td></tr> | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3don|3don]]</td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">aroE ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=176279 STAEQ])</td></tr> | |||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Shikimate_dehydrogenase Shikimate dehydrogenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.1.25 1.1.1.25] </span></td></tr> | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Shikimate_dehydrogenase Shikimate dehydrogenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.1.25 1.1.1.25] </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=3doo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3doo OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3doo RCSB], [http://www.ebi.ac.uk/pdbsum/3doo 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=3doo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3doo OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3doo RCSB], [http://www.ebi.ac.uk/pdbsum/3doo PDBsum]</span></td></tr> | ||
| Line 34: | Line 35: | ||
</StructureSection> | </StructureSection> | ||
[[Category: Shikimate dehydrogenase]] | [[Category: Shikimate dehydrogenase]] | ||
[[Category: Staeq]] | |||
[[Category: Han, C]] | [[Category: Han, C]] | ||
[[Category: Hu, T]] | [[Category: Hu, T]] | ||
Revision as of 14:12, 25 January 2015
Crystal structure of shikimate dehydrogenase from Staphylococcus epidermidis complexed with shikimateCrystal structure of shikimate dehydrogenase from Staphylococcus epidermidis complexed with shikimate
Structural highlights
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 PubMedShikimate dehydrogenase (SDH) catalyzes the NADPH-dependent reduction of 3-dehydroshikimate to shikimate in the shikimate pathway. In this study, we determined the kinetic properties and crystal structures of Staphylococcus epidermidis SDH (SeSDH) both in its ligand-free form and in complex with shikimate. SeSDH has a k(cat) of 22.8 s(-1) and a K(m) of 73 mum towards shikimate, and a K(m) of 100 microM towards NADP. The overall folding of SeSDH comprises the N-terminal alpha/beta domain for substrate binding and the C-terminal Rossmann fold for NADP binding. The active site is within a large groove between the two domains. Residue Tyr211, normally regarded as important for substrate binding, does not interact with shikimate in the binary SeSDH-shikimate complex structure. However, the Y211F mutation leads to a significant decrease in k(cat) and a minor increase in the K(m) for shikimate. The results indicate that the main function of Tyr211 may be to stabilize the catalytic intermediate during catalysis. The NADP-binding domain of SeSDH is less conserved. The usually long helix specifically recognizing the adenine ribose phosphate is substituted with a short 3(10) helix in the NADP-binding domain. Moreover, the interdomain angle of SeSDH is the widest among all known SDH structures, indicating an inactive 'open' state of the SeSDH structure. Thus, a 'closing' process might occur upon NADP binding to bring the cofactor close to the substrate for catalysis. X-ray crystallographic and enzymatic analyses of shikimate dehydrogenase from Staphylococcus epidermidis.,Han C, Hu T, Wu D, Qu S, Zhou J, Ding J, Shen X, Qu D, Jiang H FEBS J. 2009 Feb;276(4):1125-39. PMID:19215302[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
|
| ||||||||||||||||||||||