| http://www.w3.org/ns/prov#value | - A protein or polypeptide, including an enzyme, may be a ???native??? or ???wild-type???, meaning that it occurs in nature; or it may be a ???mutant???, ???variant??? or ???modified???, meaning that it has been made, altered, derived, or is in some way different or changed from a native protein or from another mutant.
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