1jcj
From Proteopedia
(Difference between revisions)
| Line 1: | Line 1: | ||
| - | [[ | + | ==OBSERVATION OF COVALENT INTERMEDIATES IN AN ENZYME MECHANISM AT ATOMIC RESOLUTION== |
| + | <StructureSection load='1jcj' size='340' side='right' caption='[[1jcj]], [[Resolution|resolution]] 1.10Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[1jcj]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JCJ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1JCJ FirstGlance]. <br> | ||
| + | </td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=HPD:1-HYDROXY-PENTANE-3,4-DIOL-5-PHOSPHATE'>HPD</scene><br> | ||
| + | <tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1jcl|1jcl]]</td></tr> | ||
| + | <tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Deoxyribose-phosphate_aldolase Deoxyribose-phosphate aldolase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.1.2.4 4.1.2.4] </span></td></tr> | ||
| + | <tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1jcj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1jcj OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1jcj RCSB], [http://www.ebi.ac.uk/pdbsum/1jcj PDBsum]</span></td></tr> | ||
| + | <table> | ||
| + | == Evolutionary Conservation == | ||
| + | [[Image:Consurf_key_small.gif|200px|right]] | ||
| + | Check<jmol> | ||
| + | <jmolCheckbox> | ||
| + | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/jc/1jcj_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
| + | <text>to colour the structure by Evolutionary Conservation</text> | ||
| + | </jmolCheckbox> | ||
| + | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | In classical enzymology, intermediates and transition states in a catalytic mechanism are usually inferred from a series of biochemical experiments. Here, we derive an enzyme mechanism from true atomic-resolution x-ray structures of reaction intermediates. Two ultra-high resolution structures of wild-type and mutant d-2-deoxyribose-5-phosphate (DRP) aldolase complexes with DRP at 1.05 and 1.10 angstroms unambiguously identify the postulated covalent carbinolamine and Schiff base intermediates in the aldolase mechanism. In combination with site-directed mutagenesis and (1)H nuclear magnetic resonance, we can now propose how the heretofore elusive C-2 proton abstraction step and the overall stereochemical course are accomplished. A proton relay system appears to activate a conserved active-site water that functions as the critical mediator for proton transfer. | ||
| - | + | Observation of covalent intermediates in an enzyme mechanism at atomic resolution.,Heine A, DeSantis G, Luz JG, Mitchell M, Wong CH, Wilson IA Science. 2001 Oct 12;294(5541):369-74. PMID:11598300<ref>PMID:11598300</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
==See Also== | ==See Also== | ||
*[[Aldolase|Aldolase]] | *[[Aldolase|Aldolase]] | ||
| - | + | == References == | |
| - | == | + | <references/> |
| - | < | + | __TOC__ |
| + | </StructureSection> | ||
[[Category: Deoxyribose-phosphate aldolase]] | [[Category: Deoxyribose-phosphate aldolase]] | ||
[[Category: Escherichia coli]] | [[Category: Escherichia coli]] | ||
Revision as of 11:22, 28 September 2014
OBSERVATION OF COVALENT INTERMEDIATES IN AN ENZYME MECHANISM AT ATOMIC RESOLUTION
| |||||||||||
