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| | ==Y104A MUTANT OF E.COLI IPP ISOMERASE== | | ==Y104A MUTANT OF E.COLI IPP ISOMERASE== |
| - | <StructureSection load='1r67' size='340' side='right' caption='[[1r67]], [[Resolution|resolution]] 1.77Å' scene=''> | + | <StructureSection load='1r67' size='340' side='right'caption='[[1r67]], [[Resolution|resolution]] 1.77Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1r67]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1R67 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1R67 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1r67]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1R67 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1R67 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.77Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1hzt|1hzt]], [[1hx3|1hx3]], [[1n2u|1n2u]], [[1pvu|1pvu]]</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">IDI OR B2889 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895])</td></tr> | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1r67 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1r67 OCA], [https://pdbe.org/1r67 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1r67 RCSB], [https://www.ebi.ac.uk/pdbsum/1r67 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1r67 ProSAT]</span></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Isopentenyl-diphosphate_Delta-isomerase Isopentenyl-diphosphate Delta-isomerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.3.3.2 5.3.3.2] </span></td></tr>
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| - | <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=1r67 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1r67 OCA], [http://pdbe.org/1r67 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1r67 RCSB], [http://www.ebi.ac.uk/pdbsum/1r67 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1r67 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/IDI_ECOLI IDI_ECOLI]] Catalyzes the 1,3-allylic rearrangement of the homoallylic substrate isopentenyl (IPP) to its highly electrophilic allylic isomer, dimethylallyl diphosphate (DMAPP).<ref>PMID:10099534</ref> <ref>PMID:9603997</ref> | + | [https://www.uniprot.org/uniprot/IDI_ECOLI IDI_ECOLI] Catalyzes the 1,3-allylic rearrangement of the homoallylic substrate isopentenyl (IPP) to its highly electrophilic allylic isomer, dimethylallyl diphosphate (DMAPP).<ref>PMID:10099534</ref> <ref>PMID:9603997</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Bacillus coli migula 1895]] | + | [[Category: Escherichia coli]] |
| - | [[Category: Isopentenyl-diphosphate Delta-isomerase]] | + | [[Category: Large Structures]] |
| - | [[Category: Wouters, J]] | + | [[Category: Wouters J]] |
| - | [[Category: Complex y104a mutant]]
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| - | [[Category: Isomerase]]
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| Structural highlights
Function
IDI_ECOLI Catalyzes the 1,3-allylic rearrangement of the homoallylic substrate isopentenyl (IPP) to its highly electrophilic allylic isomer, dimethylallyl diphosphate (DMAPP).[1] [2]
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 PubMed
Isopentenyl-diphosphate (IPP):dimethylallyl diphosphate isomerase is a key enzyme in the biosynthesis of isoprenoids. The mechanism of the isomerization reaction involves protonation of the unactivated carbon-carbon double bond in the substrate, but identity of the acidic moiety providing the proton is still not clear. Multiple sequence alignments and geometrical features observed in crystal structures of complexes with IPP isomerase suggest that Tyr-104 could play an important role during catalysis. A series of mutants was constructed by directed mutagenesis and characterized by enzymology. Crystallographic and thermal denaturation data for Y104A and Y104F mutants were obtained. Those data demonstrate the importance of residue Tyr-104 for proper folding of Escherichia coli type I IPP isomerase.
Structural role for Tyr-104 in Escherichia coli isopentenyl-diphosphate isomerase: site-directed mutagenesis, enzymology, and protein crystallography.,de Ruyck J, Durisotti V, Oudjama Y, Wouters J J Biol Chem. 2006 Jun 30;281(26):17864-9. Epub 2006 Apr 15. PMID:16617181[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Wang CW, Oh MK, Liao JC. Engineered isoprenoid pathway enhances astaxanthin production in Escherichia coli. Biotechnol Bioeng. 1999 Jan 20;62(2):235-41. PMID:10099534
- ↑ Hemmi H, Ohnuma S, Nagaoka K, Nishino T. Identification of genes affecting lycopene formation in Escherichia coli transformed with carotenoid biosynthetic genes: candidates for early genes in isoprenoid biosynthesis. J Biochem. 1998 Jun;123(6):1088-96. PMID:9603997
- ↑ de Ruyck J, Durisotti V, Oudjama Y, Wouters J. Structural role for Tyr-104 in Escherichia coli isopentenyl-diphosphate isomerase: site-directed mutagenesis, enzymology, and protein crystallography. J Biol Chem. 2006 Jun 30;281(26):17864-9. Epub 2006 Apr 15. PMID:16617181 doi:http://dx.doi.org/10.1074/jbc.M601851200
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