FIGURE 8.

Relative in vitro reactivities of individual carbohydrates (0. 5 mmol/liter) determined in the incubations with equimolar amounts of synthetic peptide Ac-AFGSAKASGA-NH₂ (A) and Ac-AFGSARASGA-NH₂ (B) in 100 mmol/liter sodium phosphate buffer for 42 days at 22 °C while continuously shaking (60 rpm). The reactivities were determined as the percentage of the consumed peptide by UPLC-ESI-QqTOF-MS operating in the positive ion mode. The peptides were quantified by integration of the characteristic XIC at m/z 907.46 ± 0.02 and 935.47 ± 0.02, respectively. Rul-P, d-ribulose 5-phosphate; Rul-PP, d-ribulose 1,5-bisphosphate; Raf, d-raffinose; Rib-P, d-ribose 5-phosphate; Ery-P, d-erythrose 4-phosphate; Gla-PGA, d-3-phosphoglyceric acid; Fru-PP, d-fructose 1,6-bisphosphate.