Functional significance of the conformational dynamics of the N-terminal segment of secreted phospholipase A2 at the interface.

Abstract

The kinetic and fluorescence properties of several pig pancreatic phospholipase A2 (PLA2) with substitutions and deletions in the N-terminal region and of tyrosines 52 and 73 are characterized. The substitutions Ala-1-D-Ala or -Gly, Trp-3-Phe, Gln-4-Nle, Arg-6-Glu, Tyr-52-Phe, and Tyr-73-Phe had at the most only a modest effect on the interfacial catalytic… (More)

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