Glossary

Arginine

Arginine (three-letter code Arg, one-letter code R) is a strongly basic amino acid with a guanidinium side chain that remains positively charged across most of the pH range. Arginine-rich peptides are highly water soluble and bind counter-ions such as trifluoroacetate. Its side chain is usually protected with a Pbf group in Fmoc synthesis.

Source: en.wikipedia.org

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