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1H-NMR spectrum of the mixture of PA derivatives of the paucimanosidic and complex-type N-glycans isolated from the mur1 mutant leaves. Numbers and letters refer to the corresponding protons (for example, 14 = signal of H-1 proton of residue 4). A, H1 signal of the nonsubstituted Man 4 of M3XGN2 and GN6-M3XGN2. b, H1 signal of substituted Man 4 of GN3-M3XGN2 and GN2M3XGN2.
