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1dlt
From Proteopedia
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| - | [[ | + | ==STRUCTURE OF CATECHOL 1,2-DIOXYGENASE FROM ACINETOBACTER SP. ADP1 WITH BOUND CATECHOL== |
| + | <StructureSection load='1dlt' size='340' side='right' caption='[[1dlt]], [[Resolution|resolution]] 1.90Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[1dlt]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Acinetobacter_sp. Acinetobacter sp.]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DLT OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DLT FirstGlance]. <br> | ||
| + | </td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CAQ:CATECHOL'>CAQ</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=LIO:[1-PENTADECANOYL-2-DECANOYL-GLYCEROL-3-YL]PHOSPHONYL+CHOLINE'>LIO</scene><br> | ||
| + | <tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1dlm|1dlm]], [[1dlq|1dlq]], [[1dmh|1dmh]]</td></tr> | ||
| + | <tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Catechol_1,2-dioxygenase Catechol 1,2-dioxygenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.13.11.1 1.13.11.1] </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=1dlt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dlt OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1dlt RCSB], [http://www.ebi.ac.uk/pdbsum/1dlt 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/dl/1dlt_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 == | ||
| + | BACKGROUND: Intradiol dioxygenases catalyze the critical ring-cleavage step in the conversion of catecholate derivatives to citric acid cycle intermediates. Catechol 1,2-dioxygenases (1, 2-CTDs) have a rudimentary design structure - a homodimer with one catalytic non-heme ferric ion per monomer, that is (alphaFe(3+))(2). This is in contrast to the archetypical intradiol dioxygenase protocatechuate 3,4-dioxygenase (3,4-PCD), which forms more diverse oligomers, such as (alphabetaFe(3+))(2-12). RESULTS: The crystal structure of 1,2-CTD from Acinetobacter sp. ADP1 (Ac 1,2-CTD) was solved by single isomorphous replacement and refined to 2.0 A resolution. The structures of the enzyme complexed with catechol and 4-methylcatechol were also determined at resolutions of 1.9 A and 1.8 A, respectively. While the characteristics of the iron ligands are similar, Ac 1,2-CTD differs from 3,4-PCDs in that only one subunit is used to fashion each active-site cavity. In addition, a novel 'helical zipper', consisting of five N-terminal helices from each subunit, forms the molecular dimer axis. Two phospholipids were unexpectedly found to bind within an 8 x 35 A hydrophobic tunnel along this axis. CONCLUSIONS: The helical zipper domain of Ac 1, 2-CTD has no equivalent in other proteins of known structure. Sequence analysis suggests the domain is a common motif in all members of the 1,2-CTD family. Complexes with catechol and 4-methylcatechol are the highest resolution complex structures to date of an intradiol dioxygenase. Furthermore, they confirm several observations seen in 3,4-PCDs, including ligand displacement upon binding exogenous ligands. The structures presented here are the first of a new family of intradiol dioxygenases. | ||
| - | + | The 1.8 A crystal structure of catechol 1,2-dioxygenase reveals a novel hydrophobic helical zipper as a subunit linker.,Vetting MW, Ohlendorf DH Structure. 2000 Apr 15;8(4):429-40. PMID:10801478<ref>PMID:10801478</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| + | </div> | ||
| - | + | ==See Also== | |
| - | + | *[[Dioxygenase|Dioxygenase]] | |
| - | == | + | == References == |
| - | [[ | + | <references/> |
| - | + | __TOC__ | |
| - | == | + | </StructureSection> |
| - | < | + | |
[[Category: Acinetobacter sp.]] | [[Category: Acinetobacter sp.]] | ||
[[Category: Catechol 1,2-dioxygenase]] | [[Category: Catechol 1,2-dioxygenase]] | ||
Revision as of 06:48, 4 September 2014
STRUCTURE OF CATECHOL 1,2-DIOXYGENASE FROM ACINETOBACTER SP. ADP1 WITH BOUND CATECHOL
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