Roles of catalytic domain residues in interfacial binding and activation of group IV cytosolic phospholipase A2.

Abstract excerpt

Group IV cytosolic phospholipase A(2) (cPLA(2)) has been shown to play a critical role in eicosanoid biosynthesis. cPLA(2) is composed of the C2 domain that mediates the Ca(2+)-dependent interfacial binding of protein and the catalytic domain. To elucidate the mechanism of interfacial activation of cPLA(2), we measured the effects of mutations of selected ionic and hydrophobic residues in the catalytic domain on...

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