However, some computer modeling programs prefer the identifer CYM. To switch between the two I’ve created this MATLAB script.
Using a GUI interface the user can use a local PDB or download straight from pdb.org and decide to swap from R1A to CYM or CYM to R1A.
If neither a R1A residue or CYM is found then the user is messaged.
This feature requires pdbread and pdbwrite from the MATLAB Bioinformatics Toolbox