The lipo-oligosaccharidic symbiotic signals of Rhizobium meliloti.
نویسندگان
چکیده
288 time to identify the carbohydrate-bearing structures. Recent examples of glycoproteins originally detected with lectins that have now been identified are desmosomal glycoproteins [ 151 and integrins [ 161. Changes in the carbohydrate moieties of adhesion molecules can alter their function [ 17-19] and thus the lectin patterns may turn out to provide new insights into the changes in the adhesive properties of keratinocytes that occur during terminal differentiation [20].
منابع مشابه
Lipo-chitooligosaccharide Nodulation Signals from Rhizobium meliloti Induce Their Rapid Degradation by the Host Plant Alfalfa.
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Rhizobial lipo-chitooligosaccharides (LCOs) are signaling molecules involved in host-range recognition for the establishment of the symbiosis with leguminous plants. The major LCO of Rhizobium meliloti, the symbiont of Medicago plants contains four or five N-acetylglucosamines, O-acetylated and N-acylated with a C16:2 fatty acid on the terminal nonreducing sugar and O-sulfated on the reducing s...
متن کاملRhizobium meliloti regulatory gene fixJ activates transcription of R. meliloti nifA and fixK genes in Escherichia coli.
When present in Escherichia coli on the multicopy expression vector pUC19, a Rhizobium meliloti regulatory gene, fixJ, belonging to a two-component regulatory system, activated the expression of two R. meliloti symbiotic genes, nifA and fixK. Primer extension by reverse transcription showed that FixJ stimulates nifA expression in E. coli by activating pnifA.
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عنوان ژورنال:
- Biochemical Society transactions
دوره 20 2 شماره
صفحات -
تاریخ انتشار 1992