Peptide Builder

The Protein Builder constructs text representations for simple peptides and proteins from a library of 20 standard amino acids. This program support on-the-fly calculation of Molecular Weight and Molecular Formula.

Please select L  or D isomer of an amino acid and C-terminus 

Alanine

Arginine

Asparagine

Aspartic Acid

Cysteine

Glutamine

Glutamic acid

Glycine

Histidine

Isoleucine

Leucine

Lysine

Methionine

Phenylalanine

Proline

Serine

Threonine

Tryptophan

Tyrosine

Valine

Peptide Sequence(N =>C):
Three Letter:

One Letter:

Molecular Weight: 
Molecular Formula: 

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