Technical Overview, aa table

Revision as of 18:49, 16 February 2009

The aa table records the amino acid modifications or mutations found on a given peptide. A single peptide can have zero or one associated mutation, and zero or more modifications, limited only by the number of residues in the peptide sequence.

Columns:

• aaid: the unique identifier for a single modification or mutation.
• pepid: the unique identifier for the peptide with which this modification or mutation is associated.
• type: the residue which has been modified or mutated.
• at: the location of the residue in the residue sequence of the associated peptide, numbered from the beginning of the protein.
• modified: the mass change (in Daltons) to the peptide, dictated by the modification or mutation.
• pm: the resulting residue to which the specified residue location has mutated. This will be blank if the change associated with this aaid is a modification; otherwise it will be a single character denoting the mutated residue.