A working glossary from the supplied website material.
- Residue
- An amino acid unit within a peptide chain. The order of residues is part of the target's identity.
- N-terminus and C-terminus
- The two ends used to describe the direction of a peptide chain. Sequences are conventionally written from N to C.
- Modification
- A stated change or addition to the target structure. Its location matters as much as its name.
- Purification
- Separation of components to obtain a material with the required composition. The process is distinct from the analytical measurement used to describe its result.
- Chromatographic purity
- A method-dependent description of the detected components, often calculated from peak areas. It is not automatically net peptide content.
- Mass spectrometry
- An analytical approach providing mass-related information that can support identity assessment.
- Net peptide content
- The proportion of the sample attributable to the peptide itself, distinct from associated water, counterions or other material.
- Aliquot
- An individually packaged portion of a larger sample. The total amount and the amount per container need separate descriptions.