http://purl.uniprot.org/keywords/883 | http://www.w3.org/2000/01/rdf-schema#comment | "Protein which is posttranslationally modified by the formation of a thioether crosslink between two amino acids in the polypeptidic chain(s), usually formed between a cysteine side chain and the side chain of a serine or a threonine."xsd:string |