4doy: Difference between revisions
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
==Crystal structure of Dibenzothiophene desulfurization enzyme C== | |||
=== | <StructureSection load='4doy' size='340' side='right' caption='[[4doy]], [[Resolution|resolution]] 1.79Å' scene=''> | ||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4doy]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Rhodococcus_sp._xp Rhodococcus sp. xp]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4DOY OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4DOY FirstGlance]. <br> | |||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr> | |||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">dszC ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=229739 Rhodococcus sp. XP])</td></tr> | |||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Unspecific_monooxygenase Unspecific monooxygenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.14.14.1 1.14.14.1] </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=4doy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4doy OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4doy RCSB], [http://www.ebi.ac.uk/pdbsum/4doy PDBsum]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The dibenzothiophene (DBT) monooxygenase DszC, which is the key initiating enzyme in ''4S'' metabolic pathway, catalyzes sequential sulphoxidation reaction of DBT to DBT sulfoxide (DBTO), then DBT sulfone (DBTO2 ). Here, we report the crystal structure of DszC from Rhodococcus sp. XP at 1.79 A. Intriguingly, two distinct conformations occur in the flexible lid loops adjacent to the active site (residue 280-295, between alpha9 and alpha10). They are named ''open'' and ''closed'' state respectively, and might show the status of the free and ligand-bound DszC. The molecular docking results suggest that the reduced FMN reacts with an oxygen molecule at C4a position of the isoalloxazine ring, producing the C4a-(hydro)peroxyflavin intermediate which is stabilized by H391 and S163. H391 may contribute to the formation of the C4a-(hydro)peroxyflavin by acting as a proton donor to the proximal peroxy oxygen, and it might also be involved in the protonation process of the C4a-(hydro)xyflavin. Site-directed mutagenesis study shows that mutations in the residues involved either in catalysis or in flavin or substrate-binding result in a complete loss of enzyme activity, suggesting that the accurate positions of flavin and substrate are crucial for the enzyme activity. (c) Proteins 2014;. (c) 2014 Wiley Periodicals, Inc. | |||
Crystal structure of DszC from Rhodococcus sp. XP at 1.79 A,Liu S, Zhang C, Su T, Wei T, Zhu D, Wang K, Huang Y, Dong Y, Yin K, Xu S, Xu P, Gu L Proteins. 2014 Jan 28. doi: 10.1002/prot.24525. PMID:24470304<ref>PMID:24470304</ref> | |||
== | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Rhodococcus sp. xp]] | [[Category: Rhodococcus sp. xp]] | ||
[[Category: Unspecific monooxygenase]] | [[Category: Unspecific monooxygenase]] | ||
[[Category: Gu, L | [[Category: Gu, L]] | ||
[[Category: Liu, S | [[Category: Liu, S]] | ||
[[Category: Zhang, C | [[Category: Zhang, C]] | ||
[[Category: Zhu, D | [[Category: Zhu, D]] | ||
[[Category: Monooxygenase]] | [[Category: Monooxygenase]] | ||
[[Category: Oxidoreductase]] | [[Category: Oxidoreductase]] | ||