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2vwt

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Revision as of 11:48, 30 March 2022

Crystal structure of YfaU, a metal ion dependent class II aldolase from Escherichia coli K12 - Mg-pyruvate product complex

Structural highlights

2vwt is a 3 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:	2vws
Activity:	2-dehydro-3-deoxyglucarate aldolase, with EC number 4.1.2.20
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[RHMA_ECOLI] Catalyzes the reversible retro-aldol cleavage of 2-keto-3-deoxy-L-rhamnonate (KDR) to pyruvate and lactaldehyde. 2-keto-3-deoxy-L-mannonate, 2-keto-3-deoxy-L-lyxonate and 4-hydroxy-2-ketoheptane-1,7-dioate (HKHD) are also reasonably good substrates, although 2-keto-3-deoxy-L-rhamnonate is likely to be the physiological substrate.^[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

One of the major challenges in the postgenomic era is the functional assignment of proteins using sequence- and structure-based predictive methods coupled with experimental validation. We have used these approaches to investigate the structure and function of the Escherichia coli K-12 protein YfaU, annotated as a putative 4-hydroxy-2-ketoheptane-1,7-dioate aldolase (HpcH) in the sequence databases. HpcH is the final enzyme in the degradation pathway of the aromatic compound homoprotocatechuate. We have determined the crystal structure of apo-YfaU and the Mg (2+)-pyruvate product complex. Despite greater sequence and structural similarity to HpcH, genomic context suggests YfaU is instead a 2-keto-3-deoxy sugar aldolase like the homologous 2-dehydro-3-deoxygalactarate aldolase (DDGA). Enzyme kinetic measurements show activity with the probable physiological substrate 2-keto-3-deoxy- l-rhamnonate, supporting the functional assignment, as well as the structurally similar 2-keto-3-deoxy- l-mannonate and 2-keto-3-deoxy- l-lyxonate (see accompanying paper: Rakus, J. F., Fedorov, A. A., Fedorov, E. V., Glasner, M. E., Hubbard, B. K., Delli, J. D., Babbitt, P. C., Almo, S. C., and Gerlt, J. A. (2008) Biochemistry 47, XXXXX-XXXXX). YfaU has similar activity toward the HpcH substrate 4-hydroxy-2-ketoheptane-1,7-dioate and synthetic substrates 4-hydroxy-2-ketopentanoic acid and 4-hydroxy-2-ketohexanoic acid. This indicates a relaxed substrate specificity that complicates the functional assignment of members of this enzyme superfamily. Crystal structures suggest these enzymes use an Asp-His intersubunit dyad to activate a metal-bound water or hydroxide for proton transfer during catalysis.

Crystal Structure and Functional Assignment of YfaU, a Metal Ion Dependent Class II Aldolase from Escherichia coli K12.,Rea D, Hovington R, Rakus JF, Gerlt JA, Fulop V, Bugg TD, Roper DI Biochemistry. 2008 Aug 29. PMID:18754683^[3]

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

References

↑ Rea D, Hovington R, Rakus JF, Gerlt JA, Fulop V, Bugg TD, Roper DI. Crystal Structure and Functional Assignment of YfaU, a Metal Ion Dependent Class II Aldolase from Escherichia coli K12. Biochemistry. 2008 Aug 29. PMID:18754683 doi:10.1021/bi800943g
↑ Rakus JF, Fedorov AA, Fedorov EV, Glasner ME, Hubbard BK, Delli JD, Babbitt PC, Almo SC, Gerlt JA. Evolution of enzymatic activities in the enolase superfamily: L-rhamnonate dehydratase. Biochemistry. 2008 Sep 23;47(38):9944-54. Epub 2008 Aug 29. PMID:18754693 doi:10.1021/bi800914r
↑ Rea D, Hovington R, Rakus JF, Gerlt JA, Fulop V, Bugg TD, Roper DI. Crystal Structure and Functional Assignment of YfaU, a Metal Ion Dependent Class II Aldolase from Escherichia coli K12. Biochemistry. 2008 Aug 29. PMID:18754683 doi:10.1021/bi800943g

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/2vwt"

@@ Line 3: / Line 3: @@
 <StructureSection load='2vwt' size='340' side='right'caption='[[2vwt]], [[Resolution|resolution]] 1.93&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2vwt]] is a 3 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=2VWT OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=2VWT FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2vwt]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Ecoli Ecoli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2VWT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2VWT FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=PYR:PYRUVIC+ACID'>PYR</scene></td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2vws|2vws]]</td></tr>
+<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2vws|2vws]]</div></td></tr>
-<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/2-dehydro-3-deoxyglucarate_aldolase 2-dehydro-3-deoxyglucarate aldolase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.1.2.20 4.1.2.20] </span></td></tr>
+<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/2-dehydro-3-deoxyglucarate_aldolase 2-dehydro-3-deoxyglucarate aldolase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.1.2.20 4.1.2.20] </span></td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=2vwt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2vwt OCA], [http://pdbe.org/2vwt PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2vwt RCSB], [http://www.ebi.ac.uk/pdbsum/2vwt PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2vwt ProSAT]</span></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=2vwt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2vwt OCA], [https://pdbe.org/2vwt PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2vwt RCSB], [https://www.ebi.ac.uk/pdbsum/2vwt PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2vwt ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/RHMA_ECOLI RHMA_ECOLI]] Catalyzes the reversible retro-aldol cleavage of 2-keto-3-deoxy-L-rhamnonate (KDR) to pyruvate and lactaldehyde. 2-keto-3-deoxy-L-mannonate, 2-keto-3-deoxy-L-lyxonate and 4-hydroxy-2-ketoheptane-1,7-dioate (HKHD) are also reasonably good substrates, although 2-keto-3-deoxy-L-rhamnonate is likely to be the physiological substrate.<ref>PMID:18754683</ref> <ref>PMID:18754693</ref>
+[[https://www.uniprot.org/uniprot/RHMA_ECOLI RHMA_ECOLI]] Catalyzes the reversible retro-aldol cleavage of 2-keto-3-deoxy-L-rhamnonate (KDR) to pyruvate and lactaldehyde. 2-keto-3-deoxy-L-mannonate, 2-keto-3-deoxy-L-lyxonate and 4-hydroxy-2-ketoheptane-1,7-dioate (HKHD) are also reasonably good substrates, although 2-keto-3-deoxy-L-rhamnonate is likely to be the physiological substrate.<ref>PMID:18754683</ref> <ref>PMID:18754693</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]

2vwt

From Proteopedia

Revision as of 11:48, 30 March 2022

Crystal structure of YfaU, a metal ion dependent class II aldolase from Escherichia coli K12 - Mg-pyruvate product complex

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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