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3urk

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Revision as of 03:26, 5 August 2016

IspH in complex with propynyl diphosphate (1061)

Structural highlights

3urk is a 2 chain structure with sequence from Ecoli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	3ke8, 3dnf, 3utc, 3utd, 3uv3, 3uv6, 3uv7, 3uv8, 3uwm
Gene:	ispH, lytB, yaaE, b0029, JW0027 (ECOLI)
Activity:	4-hydroxy-3-methylbut-2-enyl diphosphate reductase, with EC number 1.17.1.2
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[ISPH_ECOLI] Converts 1-hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate into isopentenyl diphosphate (IPP) and dimethylallyl diphosphate (DMAPP). Is also involved in penicillin tolerance and control of the stringent response. Seems to directly or indirectly interact with RelA to maintain it in an inactive form during normal growth.^[1] ^[2] ^[3]

Publication Abstract from PubMed

The final step of the methylerythritol phosphate isoprenoid biosynthesis pathway is catalysed by the iron-sulphur enzyme IspH, producing the universal precursors of terpenes: isopentenyl diphosphate and dimethylallyl diphosphate. Here we report an unforeseen reaction discovered during the investigation of the interaction of IspH with acetylene inhibitors by X-ray crystallography, Mossbauer, and nuclear magnetic resonance spectroscopy. In addition to its role as a 2H(+)/2e(-) reductase, IspH can hydrate acetylenes to aldehydes and ketones via anti-Markovnikov/Markovnikov addition. The reactions only occur with the oxidised protein and proceed via eta(1)-O-enolate intermediates. One of these is characterized crystallographically and contains a C4 ligand oxygen bound to the unique, fourth iron in the 4Fe-4S cluster: this intermediate subsequently hydrolyzes to produce an aldehyde product. This unexpected side to IspH reactivity is of interest in the context of the mechanism of action of other acetylene hydratases, as well as in the design of antiinfectives targeting IspH.

Discovery of acetylene hydratase activity of the iron-sulphur protein IspH.,Span I, Wang K, Wang W, Zhang Y, Bacher A, Eisenreich W, Li K, Schulz C, Oldfield E, Groll M Nat Commun. 2012 Sep 4;3:1042. doi: 10.1038/ncomms2052. PMID:22948824^[4]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Grawert T, Rohdich F, Span I, Bacher A, Eisenreich W, Eppinger J, Groll M. Structure of active IspH enzyme from Escherichia coli provides mechanistic insights into substrate reduction. Angew Chem Int Ed Engl. 2009;48(31):5756-9. PMID:19569147 doi:10.1002/anie.200900548
↑ Grawert T, Span I, Eisenreich W, Rohdich F, Eppinger J, Bacher A, Groll M. Probing the reaction mechanism of IspH protein by x-ray structure analysis. Proc Natl Acad Sci U S A. 2010 Jan 19;107(3):1077-81. Epub 2009 Dec 28. PMID:20080550
↑ Span I, Grawert T, Bacher A, Eisenreich W, Groll M. Crystal Structures of Mutant IspH Proteins Reveal a Rotation of the Substrate's Hydroxymethyl Group during Catalysis. J Mol Biol. 2011 Nov 23. PMID:22137895 doi:10.1016/j.jmb.2011.11.033
↑ Span I, Wang K, Wang W, Zhang Y, Bacher A, Eisenreich W, Li K, Schulz C, Oldfield E, Groll M. Discovery of acetylene hydratase activity of the iron-sulphur protein IspH. Nat Commun. 2012 Sep 4;3:1042. doi: 10.1038/ncomms2052. PMID:22948824 doi:http://dx.doi.org/10.1038/ncomms2052

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3urk"

@@ Line 1: / Line 1: @@
 ==IspH in complex with propynyl diphosphate (1061)==
 <StructureSection load='3urk' size='340' side='right' caption='[[3urk]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3urk]] 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=3URK OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3URK FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3urk]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Ecoli Ecoli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3URK OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3URK FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=0CG:PROP-2-YN-1-YL+TRIHYDROGEN+DIPHOSPHATE'>0CG</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3ke8|3ke8]], [[3dnf|3dnf]], [[3utc|3utc]], [[3utd|3utd]], [[3uv3|3uv3]], [[3uv6|3uv6]], [[3uv7|3uv7]], [[3uv8|3uv8]], [[3uwm|3uwm]]</td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ispH, lytB, yaaE, b0029, JW0027 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli])</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ispH, lytB, yaaE, b0029, JW0027 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 ECOLI])</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/4-hydroxy-3-methylbut-2-enyl_diphosphate_reductase 4-hydroxy-3-methylbut-2-enyl diphosphate reductase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.17.1.2 1.17.1.2] </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=3urk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3urk OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3urk RCSB], [http://www.ebi.ac.uk/pdbsum/3urk 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=3urk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3urk OCA], [http://pdbe.org/3urk PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3urk RCSB], [http://www.ebi.ac.uk/pdbsum/3urk PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3urk ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 19: / Line 20: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 3urk" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 27: / Line 29: @@
 </StructureSection>
 [[Category: 4-hydroxy-3-methylbut-2-enyl diphosphate reductase]]
-[[Category: Escherichia coli]]
+[[Category: Ecoli]]
 [[Category: Bacher, A]]
 [[Category: Eisenreich, W]]

3urk

From Proteopedia

Revision as of 03:26, 5 August 2016

IspH in complex with propynyl diphosphate (1061)

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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