Explore characteristics of amino acids by comparing their structural and chemical properties, predicting protein sequence changes caused by mutations, viewing common substitutions, and browsing functions of given residues in conserved domains.
PUG provides access to PubChem services via a programmatic interface. Users may download data, initiate chemical structure searches, standardize chemical structures and interact with E-utilities. Access PUG with standard URLs or via SOAP. Technical documentation at http://pubchem.ncbi.nlm.nih.gov/pug/pughelp.html