Implications of a consensus recognition site for phosphatidylcholine separate from the active site in cobra venom phospholipases A2.
1992
A model structure of Naja naja kaouthia cobra venom phospholipase A 2 has been constructed by utilizing molecular modeling techniques. Analysis of the model and available biochemical data reveal the presence in this enzyme of a putative recognition site for choline derivatives in loop 57-70 made up of residues Trp-61, Tyr-63, Phe-64, and Lys-65, together with Glu-55. The magnitude and shape of the electrostatic potential in this binding site are approximately 80% similar to that in the McPC603 antibody binding site specifically recognizing phosphocholine
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