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. 2019 May 22;11(5):288. doi: 10.3390/toxins11050288

Table A3.

Product ion data for microcystin type peptides. Masses are given in Dalton rounded to the nearest integer.

Compound [M + H]+ m/z RT min Amino Acid Sequence X4-X5-X6-X7-X1-X2 X3-X4-X5-X6 -H2O X4-X5-X6-X7 X4-X5-X6 X7-X1-X2-X3-X4-NH2 X7-X1-X2-X3-X4 X1-X2-X3-X4 X4-X5
MCY-LW 513.3 1 5.4 [Ala-Leu-MeAsp-Trp-Adda-Glu-MeDha] 896 758 740 712 629 600 583 500 500
MCY-RR 520.3 1 5.6 [Ala-Arg-MeAsp-Arg-Adda-Glu-MeDha] 910 728 710 682 599 614 597 514 470
[D-Asp3]MCY-LR 981.9 6.6 [Ala-Leu-Asp-Arg-Adda-Glu-MeDha] 866 714 696 682 599 556 539 456 470
MCY-LR 995.8 6.8 [Ala-Leu-MeAsp-Arg-Adda-Glu-MeDha] 866 728 710 682 599 570 553 470 470
MCY-HilR 1009.9 7 [Ala-HIle-MeAsp-Arg-Adda-Glu-MeDha] 880 728 710 682 599 584 567 484 470
[MeSer7]MCY-LR 1014 6.6 [Ala-Leu-MeAsp-Arg-Adda-Glu-MeSer] 884 728 710 700 599 588 571 470 470
[Dha7]MCY-FR 1015.8 7 [Ala-Phe-MeAsp-Arg-Adda-Glu-Dha] 886 728 710 668 599 590 573 504 470
MCY-FR 1029.7 7.1 [Ala-Phe-MeAsp-Arg-Adda-Glu-MeDha] 900 728 710 682 599 604 587 504 470
[Dha7]MCY-YR 1031.9 6.5 [Ala-Tyr-MeAsp-Arg-Adda-Glu-Dha] 902 728 710 668 599 606 589 520 470
MCY-YR 1045.5 6.6 [Ala-Tyr-MeAsp-Arg-Adda-Glu-MeDha] 916 728 710 682 599 620 603 520 470
MCY-(H4)YR 1049.7 6.3 [Ala-H4Tyr-MeAsp-Arg-Adda-Glu-MeDha] 920 728 710 682 599 624 607 524 470
MCY-WR 1068.8 7.2 [Ala-Trp-MeAsp-Arg-Adda-Glu-MeDha] 939 728 710 682 599 643 626 543 470
[MeSer7]MCY-WR 1086.9 6.9 [Ala-Trp-MeAsp-Arg-Adda-Glu-MeSer] 957 728 710 700 599 661 644 543 470

1 Data given in [M + 2H]2+.