1kqu
From Proteopedia
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[[Image:1kqu.gif|left|200px]] | [[Image:1kqu.gif|left|200px]] | ||
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'''Human phospholipase A2 complexed with a substrate anologue''' | '''Human phospholipase A2 complexed with a substrate anologue''' | ||
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D-Tyrosine as a chiral precusor to potent inhibitors of human nonpancreatic secretory phospholipase A2 (IIa) with antiinflammatory activity., Hansford KA, Reid RC, Clark CI, Tyndall JD, Whitehouse MW, Guthrie T, McGeary RP, Schafer K, Martin JL, Fairlie DP, Chembiochem. 2003 Mar 3;4(2-3):181-5. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12616631 12616631] | D-Tyrosine as a chiral precusor to potent inhibitors of human nonpancreatic secretory phospholipase A2 (IIa) with antiinflammatory activity., Hansford KA, Reid RC, Clark CI, Tyndall JD, Whitehouse MW, Guthrie T, McGeary RP, Schafer K, Martin JL, Fairlie DP, Chembiochem. 2003 Mar 3;4(2-3):181-5. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12616631 12616631] | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
| - | [[Category: Phospholipase A(2)]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Martin, J L.]] | [[Category: Martin, J L.]] | ||
[[Category: Tyndall, J D.]] | [[Category: Tyndall, J D.]] | ||
| - | [[Category: | + | [[Category: Inhibitor]] |
| - | [[Category: | + | [[Category: Phospholipase a2]] |
| - | [[Category: | + | [[Category: Structure]] |
| - | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 23:03:45 2008'' | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | |
Revision as of 20:03, 2 May 2008
Human phospholipase A2 complexed with a substrate anologue
Overview
Few reported inhibitors of secretory phospholipase A(2) enzymes truly inhibit the IIa human isoform (hnpsPLA(2)-IIa) noncovalently at submicromolar concentrations. Herein, the simple chiral precursor D-tyrosine was derivatised to give a series of potent new inhibitors of hnpsPLA(2)-IIa. A 2.2-A crystal structure shows an inhibitor bound in the active site of the enzyme, chelated to a Ca(2+) ion through carboxylate and amide oxygen atoms, H-bonded through an amide NH group to His48, with multiple hydrophobic contacts and a T-shaped aromatic-group-His6 interaction. Antiinflammatory activity is also demonstrated for two compounds administered orally to rats.
About this Structure
1KQU is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
D-Tyrosine as a chiral precusor to potent inhibitors of human nonpancreatic secretory phospholipase A2 (IIa) with antiinflammatory activity., Hansford KA, Reid RC, Clark CI, Tyndall JD, Whitehouse MW, Guthrie T, McGeary RP, Schafer K, Martin JL, Fairlie DP, Chembiochem. 2003 Mar 3;4(2-3):181-5. PMID:12616631 Page seeded by OCA on Fri May 2 23:03:45 2008
