Figure 4 | Scientific Reports

Figure 4

From: A chitin deacetylase from the endophytic fungus Pestalotiopsis sp. efficiently inactivates the elicitor activity of chitin oligomers in rice cells

Figure 4

Chemical structure (a) and MALDI-TOF-MS/MS fragmentation pattern (b) of the double-deacetylated chitin pentamer (A3D2-AADDA) with 3-Aminoquinoline (3-AMQ) on the reducing end as an H+-adduct. This A3D2 was produced by incubation of chitin hexamer (A6) (1 mg/ml) with PesCDA (4 μg/ml) under the standard conditions. Nomenclature of the fragments is according to Domon and Costello18; fragments derived from the reducing end (Y- and Z-ions) are marked in red letters.

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