Presence of asparagine-linked N-acetylglucosamine and chitobiose in Pyrus pyrifolia S-RNases associated with gametophytic self-incompatibility

S‐RNases encoded by the S‐locus of rosaceous and solanaceous plants discriminate between the S‐alleles of pollen in gametophytic self‐incompatibility reactions, but it is not clear how. We report the structures of N‐glycans attached to each of the N‐glycosylation sites of seven S‐RNases in Pyrus pyr...

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