Spider’s venom phospholipases D: A structural review
2018
Abstract Spider venoms are complex mixtures of proteins, peptides and small organic and inorganic molecules. Among the proteins, phospholipases D (PLDs) present the major portion, and till now they are the most studied enzymes in spider venom. These PLDs have been divided into two classes, I and II, based on their primary and tertiary structure. Currently, crystal structures of both classes of these enzymes are available in the Protein Data Bank (PDB). Their three-dimensional structure is composed of eight α-helices and eight β-strands forming the ubiquitous fold called triosephosphate isomerase (TIM) barrel. These enzymes use general acid-base catalysis to hydrolyzes their substrate. In this review, we have described the structural features, structure-based mechanisms of catalysis, maturation, and inhibition of these enzymes using the synthetic inhibitor.
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