If you want to solve the money-changing problem, please also see the form for decomposing integer masses.
To see how this works, you can fill in an example (needs JavaScript), then click Submit. Also, please read the manual.
List of masses to decompose (in Dalton) (space-separated): ?
or upload from file (supported file formats):
Mass distribution is: monoisotopic average isotopic
Allowed mass error: ? Da (absolute) ppm (relative) (The resulting decomposition's mass will deviate by at most this much from the query mass.)
Computational precision:? automatic or manual: Da
Select a predefined alphabet, enter your own, or upload an alphabet file. ?
Modifications of the entire molecule: none H2O (+18 Da) A-ions (-27 Da) B-ions (+1 Da) C-ions (+18 Da) X-ions (+45 Da) Y-ions (+19 Da) Z-ions (+2 Da) [M+H]+ (+1 Da) [M+Na]+ (+23 Da) [M+NH4]+ (+18 Da) [M+2K]+ (+78 Da) [M-C3H9N]+ (-59 Da)
Acetylation (A, +42 Da) Acetylation (D, +42 Da) Acetylation (G, +42 Da) Acetylation (K, +42 Da) Acetylation (M, +42 Da) Acetylation (P, +42 Da) Acetylation (S, +42 Da) Acetylation (T, +42 Da) Amidation (E, -1 Da) Amidation (F, -1 Da) Amidation (T, -1 Da) Amidation (Y, -1 Da) Carboxylation (K, +44 Da) Deamidation (N, +1 Da) Deamidation (Q, +1 Da) Dimethylation (K, +28 Da) Dimethylation (R, +28 Da) Formylation (M, +28 Da) Hydroxylation (D, +16 Da) Hydroxylation (N, +16 Da) Hydroxylation (P, +16 Da) Methylation (F, +14 Da) Methylation (H, +14 Da) Methylation (K, +14 Da) Methylation (N, +14 Da) Methylation (R, +14 Da) Phosphorylation (C, +80 Da) Phosphorylation (D, +80 Da) Phosphorylation (H, +80 Da) Phosphorylation (S, +80 Da) Phosphorylation (T, +80 Da) Phosphorylation (Y, +80 Da) Pyrrolidone carboxylic acid (E, -18 Da) Pyrrolidone carboxylic acid (Q, -17 Da) Sulfation (T, 80 Da) Sulfation (Y, 80 Da) Trimethylation (K, +42 Da) Pyruvic acid (S, -17 Da) 3-methylthioaspartic acid (D, +46 Da)
