Herein visible light is used to induce RAFT polymerization from protein for preparing protein-polymer conjugates at ambient temperature. Polymerization is fast and can be conveniently controlled with irradiation time. By site-specific polymerization of NIPAm to protein, the protein activity is maintained and in certain cases it presents an efficient on-off-switchable property.

link:

http://pubs.rsc.org/en/Content/ArticleLanding/2014/CC/c4cc02277g#!divAbstract