Solid Phase Peptide Synthesis
Definition
Solid-phase peptide synthesis: a method of assembling a peptide through repeated chemical steps while the growing chain is attached to a solid support.
By PurePeptideHub Editorial Team · Updated . Educational source review; independent clinical review pending.
Why use a solid support?
Merrifield’s approach simplified handling between successive additions by keeping the growing chain attached to a support. It enabled systematic assembly of chosen sequences. Synthesis and the later purification of the product are separate stages.
References: [1]
A yield example
If a hypothetical synthesis requires ten additions and each succeeds with a 99% yield, the all-success fraction is approximately 0.99 to the power of 10, or 90.4%, before other losses. This simplified arithmetic shows why repeated high-yield steps can still leave incomplete products; it is not an assay of any batch.
What SPPS does not certify
Naming the synthesis method does not establish the final sequence, purity, quantity or sterility. A finished research material needs appropriate characterization. HPLC and mass spectrometry answer complementary questions, and neither should be replaced with the statement that the product was made by SPPS.