Studies on the nonmevalonate terpene biosynthetic pathway: metabolic role of IspH (LytB) protein.
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Rohdich F, Hecht S, Gartner K, Adam P, Krieger C, Amslinger S, Arigoni D, Bacher A, Eisenreich W
Studies on the nonmevalonate terpene biosynthetic pathway: metabolic role of IspH (LytB) protein.
Proc Natl Acad Sci U S A. 2002 Feb 5;99(3):1158-63. Epub 2002 Jan 29.
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- 11818558 [ View in PubMed]
- Abstract
Isopentenyl diphosphate and dimethylallyl diphosphate serve as the universal precursors for the biosynthesis of terpenes. Although their biosynthesis by means of mevalonate has been studied in detail, a second biosynthetic pathway for their formation by means of 1-deoxy-D-xylulose 5-phosphate has been discovered only recently in plants and certain eubacteria. Earlier in vivo experiments with recombinant Escherichia coli strains showed that exogenous 1-deoxy-D-xylulose can be converted into 1-hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate by the consecutive action of enzymes specified by the xylB and ispCDEFG genes. This article describes the transformation of exogenous [U-(13)C(5)]1-deoxy-D-xylulose into a 5:1 mixture of [U-(13)C(5)]isopentenyl diphosphate and [U-(13)C(5)]dimethylallyl diphosphate by an E. coli strain engineered for the expression of the ispH (lytB) gene in addition to recombinant xylB and ispCDEFG genes.