1oxr

Aspirin induces its Anti-inflammatory effects through its specific binding to Phospholipase A2: Crystal structure of the complex formed between Phospholipase A2 and Aspirin at 1.9A resolution

spinqualitylabelsall models 1oxr, resolution 1.93Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1oxr is a 1 chain structure with sequence from Andaman cobra. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: AIN, CA Related: 1lff, 1ln8 Activity: Phospholipase A(2), with EC number 3.1.1.4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [PA2A3_NAJSG] PLA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides. 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 Phospholipase A2 is potentially an important target for structure-based rational drug design. In order to determine the involvement of phospholipase A2 in the action of non-steroidal anti-inflammatory drugs (NSAIDs), the crystal structure of the complex formed between phospholipase A2 and aspirin has been determined at 1.9 angstroms resolution. The structure contains 915 protein atoms, 1 calcium ion, 13 atoms of aspirin and 105 water molecules. The observed electron density of the aspirin molecule in the structure was of very high quality thus allowing the precise determination of its atomic coordinates leading to the clear description of its interactions with the enzyme. The structure of the complex clearly shows that aspirin is literally embedded in the hydrophobic environment of PLA2. It is so placed in the substrate binding channel that it forms several important attractive interactions with calcium ion, His 48 and Asp 49. Thus, the structure of the complex clearly shows that aspirin occupies a favourable place in the specific binding site of PLA2. The binding studies have shown that acetyl salicylate (aspirin) binds to PLA2 enzyme specifically with a dissociation constant of 6.4 x 10(-6) M. The structural details and binding data suggest that the inhibition of PLA2 by aspirin is of pharmacological Aspirin induces its anti-inflammatory effects through its specific binding to phospholipase A2: crystal structure of the complex formed between phospholipase A2 and aspirin at 1.9 angstroms resolution.,Singh RK, Ethayathulla AS, Jabeen T, Sharma S, Kaur P, Singh TP J Drug Target. 2005 Feb;13(2):113-9. PMID:15823962 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Phospholipase A2

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