Mass Calculator

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Peptide Sequences (raw or FASTA): Mass Type: Select PTMs:

Unknown modification type Cystine (half) Sulfotyrosine C-terminal amidation Pyroglutamic acid (Gln) Gamma carboxylic glutamic acid 4-Hydroxyproline Benzoylphenylalanine D-alanine D-arginine D-asparagine D-aspartic acid D-cysteine D-glutamic acid D-glutamine D-histidine D-isoleucine D-leucine D-lysine D-methionine D-phenylalanine D-proline D-serine D-threonine D-tryptophan D-tyrosine D-valine 2-Amino-3-mercapto-propionamide Selenocysteine Selenocystine (half) Glycosylated threonine Glycosylated serine Bromotryptophan Gamma-hydroxy-D-valine 5-Hydroxy-lysine 2_2-Dimethylthiazolidine N-Acetate (on N-terminus) Norleucine 3-Iodotyrosine Oxomethionine O-Palmitoyl-threonine C-terminal amidation (By similarity) C-terminal amidation (Probable) Pyroglutamic acid (Gln) (Probable) Pyroglutamic acid (Glu) Glycosylated Asparagine