Native protein

In biochemistry, the native state of a protein is its properly folded and assembled form with operative structure and function. The native state of a protein needs all four levels of biomolecular structure, with secondary to quaternary structure formed by weak interactions along the covalently-bonded backbone. Proteins in their natural state with intact structure that is not altered by heat, chemicals, enzyme reaction, or other denaturants are named "native proteins".
Creative BioMart provides a comprehensive list of native proteins.