Dear Uma, You can do this using coot. Go to Extensions > Modelling > Replace Residue... and enter the three letter code.
Cheers Hugo Correia 2012/5/4 Uma Ratu <[email protected]> > Dear All: > > My protein has a key cysteine residue involved in catalytic activity. > > The template structure used for the modeling has the same key cysteine. In > the template structure, this key cysteine residue is assigned as CSX based > on the observation from its electronic density. > > I compared the electron density from the template as well as my model. I > can't tell if the cysteine in my model is oxidized or not. The ones from > the template also looks different from each other, although both assigned > as CSX. > > I have the snapshots of these cysteines attached. The ones from my model > named as "M-", and the ones from the template named as "T-". > > Plus, how to change the residue label from Cys to CSX if the cystein is > oxidized? In coot, I could not find such function. > > Thank you very much for your advice > > Uma >
