1a05

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(Difference between revisions)

Revision as of 16:08, 9 September 2015

CRYSTAL STRUCTURE OF THE COMPLEX OF 3-ISOPROPYLMALATE DEHYDROGENASE FROM THIOBACILLUS FERROOXIDANS WITH 3-ISOPROPYLMALATE

Structural highlights

1a05 is a 2 chain structure with sequence from "ferrobacillus_ferrooxidans"_leathen_and_braley_1954 "ferrobacillus ferrooxidans" leathen and braley 1954. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Gene:	LEUB ("Ferrobacillus ferrooxidans" Leathen and Braley 1954)
Activity:	3-isopropylmalate dehydrogenase, with EC number 1.1.1.85
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[LEU3_ACIFR] Catalyzes the oxidation of 3-carboxy-2-hydroxy-4-methylpentanoate (3-isopropylmalate) to 3-carboxy-4-methyl-2-oxopentanoate. The product decarboxylates to 4-methyl-2 oxopentanoate.

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

BACKGROUND: 3-Isopropylmalate dehydrogenase (IPMDH) and isocitrate dehydrogenase (ICDH) belong to a unique family of bifunctional decarboxylating dehydrogenases. Although the ICDH dimer catalyzes its reaction under a closed conformation, known structures of the IPMDH dimer (without substrate) adopt a fully open or a partially closed form. Considering the similarity in the catalytic mechanism, the IPMDH dimer must be in a fully closed conformation during the reaction. A large conformational change should therefore occur upon substrate binding. RESULTS: We have determined the crystal structure of IPMDH from Thiobacillus ferrooxidans (Tf) complexed with 3-isopropylmalate (IPM) at 2.0 A resolution by the molecular replacement method. The structure shows a fully closed conformation and the substrate-binding site is quite similar to that of ICDH except for a region around the gamma-isopropyl group. The gamma group is recognized by a unique hydrophobic pocket, which includes Glu88, Leu91 and Leu92 from subunit 1 and Val193' from subunit 2. CONCLUSIONS: A large movement of domain 1 is induced by substrate binding, which results in the formation of the hydrophobic pocket for the gamma-isopropyl moiety of IPM. A glutamic acid in domain 1, Glu88, participates in the formation of the hydrophobic pocket. The C beta and C gamma atoms of Glu88 interact with the gamma-isopropyl moiety of IPM and are central to the recognition of substrate. The acidic tip of Glu88 is likely to interact with the nicotinamide mononucleotide (NMN) ribose of NAD+ in the ternary complex. This structure clearly explains the substrate specificity of IPMDH.

Structure of 3-isopropylmalate dehydrogenase in complex with 3-isopropylmalate at 2.0 A resolution: the role of Glu88 in the unique substrate-recognition mechanism.,Imada K, Inagaki K, Matsunami H, Kawaguchi H, Tanaka H, Tanaka N, Namba K Structure. 1998 Aug 15;6(8):971-82. PMID:9739088^[1]

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

References

↑ Imada K, Inagaki K, Matsunami H, Kawaguchi H, Tanaka H, Tanaka N, Namba K. Structure of 3-isopropylmalate dehydrogenase in complex with 3-isopropylmalate at 2.0 A resolution: the role of Glu88 in the unique substrate-recognition mechanism. Structure. 1998 Aug 15;6(8):971-82. PMID:9739088

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1a05"

@@ Line 2: / Line 2: @@
 <StructureSection load='1a05' size='340' side='right' caption='[[1a05]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1a05]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Acidithiobacillus_ferrooxidans Acidithiobacillus ferrooxidans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A05 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1A05 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1a05]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"ferrobacillus_ferrooxidans"_leathen_and_braley_1954 "ferrobacillus ferrooxidans" leathen and braley 1954]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A05 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1A05 FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=IPM:3-ISOPROPYLMALIC+ACID'>IPM</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LEUB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=920 Acidithiobacillus ferrooxidans])</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LEUB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=920 "Ferrobacillus ferrooxidans" Leathen and Braley 1954])</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/3-isopropylmalate_dehydrogenase 3-isopropylmalate dehydrogenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.1.85 1.1.1.85] </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=1a05 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a05 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1a05 RCSB], [http://www.ebi.ac.uk/pdbsum/1a05 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=1a05 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a05 OCA], [http://pdbe.org/1a05 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1a05 RCSB], [http://www.ebi.ac.uk/pdbsum/1a05 PDBsum]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/LEU3_THIFE LEU3_THIFE]] Catalyzes the oxidation of 3-carboxy-2-hydroxy-4-methylpentanoate (3-isopropylmalate) to 3-carboxy-4-methyl-2-oxopentanoate. The product decarboxylates to 4-methyl-2 oxopentanoate.[HAMAP-Rule:MF_01033]
+[[http://www.uniprot.org/uniprot/LEU3_ACIFR LEU3_ACIFR]] Catalyzes the oxidation of 3-carboxy-2-hydroxy-4-methylpentanoate (3-isopropylmalate) to 3-carboxy-4-methyl-2-oxopentanoate. The product decarboxylates to 4-methyl-2 oxopentanoate.
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 28: / Line 28: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 1a05" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 35: / Line 36: @@
 __TOC__
 </StructureSection>
+[[Category: Ferrobacillus ferrooxidans leathen and braley 1954]]
 [[Category: 3-isopropylmalate dehydrogenase]]
-[[Category: Acidithiobacillus ferrooxidans]]
 [[Category: Imada, K]]
 [[Category: Inagaki, K]]

1a05

From Proteopedia

Revision as of 16:08, 9 September 2015

CRYSTAL STRUCTURE OF THE COMPLEX OF 3-ISOPROPYLMALATE DEHYDROGENASE FROM THIOBACILLUS FERROOXIDANS WITH 3-ISOPROPYLMALATE

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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