2v5k: Difference between revisions
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[[Image:2v5k. | [[Image:2v5k.jpg|left|200px]]<br /><applet load="2v5k" size="450" color="white" frame="true" align="right" spinBox="true" | ||
<applet load="2v5k" size="450" color="white" frame="true" align="right" spinBox="true" | |||
caption="2v5k, resolution 2.20Å" /> | caption="2v5k, resolution 2.20Å" /> | ||
'''CLASS II ALDOLASE HPCH- MAGNESIUM- OXAMATE COMPLEX'''<br /> | '''CLASS II ALDOLASE HPCH- MAGNESIUM- OXAMATE COMPLEX'''<br /> | ||
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==About this Structure== | ==About this Structure== | ||
2V5K is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] with MG, PO4 and OXM as [http://en.wikipedia.org/wiki/ligands ligands]. | 2V5K is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] with MG, PO4 and OXM as [http://en.wikipedia.org/wiki/ligands ligands]. Known structural/functional Sites: <scene name='pdbsite=AC1:Mg Binding Site For Chain A'>AC1</scene>, <scene name='pdbsite=AC2:Oxm Binding Site For Chain A'>AC2</scene>, <scene name='pdbsite=AC3:Mg Binding Site For Chain B'>AC3</scene>, <scene name='pdbsite=AC4:Oxm Binding Site For Chain B'>AC4</scene>, <scene name='pdbsite=AC5:Po4 Binding Site For Chain A'>AC5</scene> and <scene name='pdbsite=AC6:Po4 Binding Site For Chain B'>AC6</scene>. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=2V5K OCA]. | ||
==Reference== | ==Reference== | ||
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[[Category: lyase]] | [[Category: lyase]] | ||
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Dec 18 20:28:31 2007'' | ||
Revision as of 21:18, 18 December 2007
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CLASS II ALDOLASE HPCH- MAGNESIUM- OXAMATE COMPLEX
OverviewOverview
Microorganisms are adept at degrading chemically resistant aromatic, compounds. One of the longest and most well characterized aromatic, catabolic pathways is the 4-hydroxyphenylacetic acid degradation pathway, of Escherichia coli. The final step involves the conversion of, 4-hydroxy-2-oxo-heptane-1,7-dioate into pyruvate and succinic, semialdehyde. This reaction is catalyzed by, 4-hydroxy-2-oxo-heptane-1,7-dioate aldolase (HpcH), a member of the, divalent metal ion dependent class II aldolase enzymes that have great, biosynthetic potential. We have solved the crystal structure of HpcH in, the apo form, and with magnesium and the substrate analogue oxamate bound, to 1.6 A and 2.0 A, respectively. Comparison with similar structures of, the homologous 2-dehydro-3-deoxygalactarate aldolase, coupled with, site-directed mutagenesis data, implicate histidine 45 and arginine 70 as, key catalytic residues.
About this StructureAbout this Structure
2V5K is a Single protein structure of sequence from Escherichia coli with MG, PO4 and OXM as ligands. Known structural/functional Sites: , , , , and . Full crystallographic information is available from OCA.
ReferenceReference
Structure and Mechanism of HpcH: A Metal Ion Dependent Class II Aldolase from the Homoprotocatechuate Degradation Pathway of Escherichia coli., Rea D, Fulop V, Bugg TD, Roper DI, J Mol Biol. 2007 Jun 26;. PMID:17881002
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