Literature for clan CN

2015
1. Saisawang,C., Saitornuang,S., Sillapee,P., Ubol,S., Smith,D.R. and Ketterman,A.J.
   Chikungunya nsP2 protease is not a papain-like cysteine protease and the catalytic dyad cysteine is interchangeable with a proximal serine
   Sci Rep (2015) 5, 17125-17125. PubMed  Europe PubMed DOI  PMC  EPMC
2012
2. Rawlings,N.D. and Barrett,A.J.
   Introduction: The clans and families of cysteine peptidases
   [ISSN:978-0-12-407743-0] (2012) 3, 1743-1773. DOI