?url_ver=Z39.88-2004&rft_id=10.1038%2Fnchem.1507&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Curran%2C+DP&rft.aulast=Curran&rft.aufirst=DP&rft.issue=12&rft.volume=4&rft.date=1+December+2012&rft.issn=1755-4330&rft.atitle=Free+at+last!&rft.title=Nature+Chemistry&rft.pages=958+-+%3F&rft.genre=article