Multiple alignments of primary structures of many kinds of prenyltransferases that participate in the most fundamental prenyl-chain backbone synthesizing process in isoprenoid biosynthesis showed seven conserved regions in the primary structures of (E)-prenyl diphosphate synthases. However, no information has been available about the structures of (Z)-prenyl diphosphate synthases until our recent isolation of the gene for the undecaprenyl diphosphate synthase of Micrococcus luteus B-P 26. The amino acid sequence of the (Z)-prenyl diphosphate synthase is totally different from those of (E)-prenyl chain elongating enzymes. Protein data base searches for sequences similar to that of the undecaprenyl diphosphate synthase yielded many unknown proteins which have not yet been characterized. Two of the proteins have recently been identified as the undecaprenyl diphosphate synthase of Escherichia coli and the dehydrodolichyl diphosphate synthase of Saccharomyces cerevisiae, indicating that there are three highly conserved regions in the primary structure of (Z)-prenyl chain elongating enzymes.

• PMID: 10586494
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Journal Article | Research Support, Non-U.S. Gov't | Review

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Koyama T

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