The PepMate™ Peptide Calculator


For single-letter entry: enter amino acids single-letter code in upper case (e.g., HAPPY).

For three-letter entry: enter amino acid sequence separated by hyphen (eg., Arg-Gly).

Choose the end groups on N- and C-termini from their respective drop-down lists next to the sequence entry bar.

For side-chain protecting groups: enter the standard abbreviation of group in parenthesis  (e.g., Arg(Pbf)-Gly).

For disulfide bonds: enter either single letter code for amino acids in upper case or three-letter code without parentheses and identify connectivity of disulfide bond(s) (e.g., 3-4, 5-6, 9-12).

Click here for a poster, in PDF format, of the common amino acids and their properties.




DISCLAIMER: The PepMate™ Peptide Calculator is available free of charge and is supplied "as is" without warranties of any kind, expressed or implied. All liabilities for its use, content, algorithms, accuracy of data, omissions, and errors is expressly disclaimed by Peptides International. While every effort is made for the accuracy of calculations, it is the responsibility of the user to verify the accuracy of any data with regards to its use.