Crystal structure of bee-venom phospholipase A2 in a complex with a transition-state analogue

Steven P. White, David L. Scott, Zbyszek Otwinowski, Michael H. Gelb, Paul B. Sigler

Research output: Contribution to journalArticlepeer-review

280 Scopus citations

Abstract

The 2.0 angstroms crystal structure of a complex containing bee-venom phospholipase A2 (PLA2) and a phosphonate transition-state analogue was solved by multiple isomorphous replacement. The electron-density map is sufficiently detailed to visualize the proximal sugars of the enzyme's N-linked carbohydrate and a single molecule of the transition-state analogue bound to its active center. Although bee-venom PLA2 does not belong to the large homologous Class I/II family that encompasses most other well-studied PLA2s, there is segmental sequence similarity and conservation of many functional substructures. Comparison of the bee-venom enzyme with other phospholipase structures provides compelling evidence for a common catalytic mechanism.

Original languageEnglish (US)
Pages (from-to)1563-1566
Number of pages4
JournalScience
Volume250
Issue number4987
DOIs
StatePublished - 1990

ASJC Scopus subject areas

  • General

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