L,L-Succinamopine: an epimeric crown gall opine |
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| Authors: | William Scott Chilton Elizabeth Hood Kenneth L. Rinehart Mary-Dell Chilton |
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| Affiliation: | 1. Department of Biology, Washington University, St. Louis, MO 63130, U.S.A.;2. School of Chemical Science, University of Illinois, Urbana, IL 61801, U.S.A.;3. CIBA-Geigy Biotechnology Facility, P.O. Box 12257, Research Triangle Park, NC 27709, U.S.A. |
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| Abstract: | Alfalfa tumour incited by Agrobacterium tumefaciens strain A281, carrying the tumour inducing plasmid pTi Bo542, synthesizes agropine and related mannityl opines. In addition it contains a small amount of leucinopine and large quantities of a new opine here identified as N-[(1S)-1-carboxy 2-carbamoylethyl]-(S)-glutamic acid. This new opine, L,L-succinamopine, is the Lglu epimer of the succinamopine previously isolated from tumours incited by pTi AT181 and related strains. The latter opine should now be designated D,L-succinamopine. This is the first example of the natural occurrence of epimeric opine structures. |
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| Keywords: | crown gall opine succinamopine leucinopine. |
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