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Nodulation protein S (NodS) This family consists of nodulation S (NodS) proteins. The products of the rhizobial nodulation genes are involved in the biosynthesis of lipochitin oligosaccharides (LCOs), which are host-specific signal molecules required for nodule formation. NodS is an S-adenosyl-L-methionine (SAM)-dependent methyltransferase involved in N methylation of LCOs. NodS uses N-deacetylated chitooligosaccharides, the products of the NodBC proteins, as its methyl acceptors.
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