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How Peptides Are Synthesized

An overview of solid-phase peptide synthesis (SPPS).

Solid-Phase Peptide Synthesis

SPPS builds a peptide chain one amino acid at a time on an insoluble resin support. Each cycle couples a protected amino acid, then deprotects to expose the next coupling site.

Cleavage and Purification

After synthesis, the peptide is cleaved from the resin and purified — typically by reverse-phase HPLC — to remove truncated sequences and side products.

Lyophilization

The purified peptide is lyophilized (freeze-dried) into a stable powder form suitable for storage and research use.

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