2ch2
From Proteopedia
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| - | [[Image:2ch2.gif|left|200px]] | + | [[Image:2ch2.gif|left|200px]] |
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| - | '''STRUCTURE OF THE ANOPHELES GAMBIAE 3-HYDROXYKYNURENINE TRANSAMINASE IN COMPLEX WITH INHIBITOR''' | + | {{Structure |
| + | |PDB= 2ch2 |SIZE=350|CAPTION= <scene name='initialview01'>2ch2</scene>, resolution 2.70Å | ||
| + | |SITE= <scene name='pdbsite=AC1:Ky1+Binding+Site+For+Chain+D'>AC1</scene> | ||
| + | |LIGAND= <scene name='pdbligand=KY1:4-(2-AMINOPHENYL)-4-OXOBUTANOIC+ACID'>KY1</scene>, <scene name='pdbligand=LLP:2-LYSINE(3-HYDROXY-2-METHYL-5-PHOSPHONOOXYMETHYL-PYRIDIN-4-YLMETHANE)'>LLP</scene> and <scene name='pdbligand=KY1:4-(2-AMINOPHENYL)-4-OXOBUTANOIC ACID'>KY1</scene> | ||
| + | |ACTIVITY= | ||
| + | |GENE= | ||
| + | }} | ||
| + | |||
| + | '''STRUCTURE OF THE ANOPHELES GAMBIAE 3-HYDROXYKYNURENINE TRANSAMINASE IN COMPLEX WITH INHIBITOR''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2CH2 is a [ | + | 2CH2 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Anopheles_gambiae Anopheles gambiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2CH2 OCA]. |
==Reference== | ==Reference== | ||
| - | Crystal structure of the Anopheles gambiae 3-hydroxykynurenine transaminase., Rossi F, Garavaglia S, Giovenzana GB, Arca B, Li J, Rizzi M, Proc Natl Acad Sci U S A. 2006 Apr 11;103(15):5711-6. Epub 2006 Apr 3. PMID:[http:// | + | Crystal structure of the Anopheles gambiae 3-hydroxykynurenine transaminase., Rossi F, Garavaglia S, Giovenzana GB, Arca B, Li J, Rizzi M, Proc Natl Acad Sci U S A. 2006 Apr 11;103(15):5711-6. Epub 2006 Apr 3. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16585514 16585514] |
[[Category: Anopheles gambiae]] | [[Category: Anopheles gambiae]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: transferase]] | [[Category: transferase]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 16:15:18 2008'' |
Revision as of 14:15, 20 March 2008
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| , resolution 2.70Å | |||||||
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| Sites: | |||||||
| Ligands: | , and | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
STRUCTURE OF THE ANOPHELES GAMBIAE 3-HYDROXYKYNURENINE TRANSAMINASE IN COMPLEX WITH INHIBITOR
Overview
In Anopheles gambiae, the vector for the most deadly malaria parasite Plasmodium falciparum, xanthurenic acid (XA) plays a key role in parasite gametogenesis and fertility. In mosquitoes, XA is produced by transamination of 3-hydroxykynurenine (3-HK), a reaction that represents the main route to prevent the accumulation of the potentially toxic 3-HK excess. Interfering with XA metabolism in A. gambiae therefore appears an attractive avenue for the development of malaria transmission-blocking drugs and insecticides. We have determined the crystal structure of A. gambiae 3-HK transaminase in its pyridoxal 5'-phosphate form and in complex with a newly synthesized competitive enzyme inhibitor. Structural inspection of the enzyme active site reveals the key molecular determinants for ligand recognition and catalysis. Major contributions toward inhibitor binding are provided by a salt bridge between the inhibitor carboxylate and Arg-356 and by a remarkable hydrogen bond network involving the anthranilic moiety of the inhibitor and backbone atoms of residues Gly-25 and Asn-44. This study may be useful for the structure-based design of specific enzyme inhibitors of potential interest as antimalarial agents.
About this Structure
2CH2 is a Single protein structure of sequence from Anopheles gambiae. Full crystallographic information is available from OCA.
Reference
Crystal structure of the Anopheles gambiae 3-hydroxykynurenine transaminase., Rossi F, Garavaglia S, Giovenzana GB, Arca B, Li J, Rizzi M, Proc Natl Acad Sci U S A. 2006 Apr 11;103(15):5711-6. Epub 2006 Apr 3. PMID:16585514
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