Isolated nucleic acid molecules encoding variant hK2 polypeptides and fragments thereof, as well as expression cassettes and host cells comprising said nucleic acid molecules, are provided. Also provided is a method to express a nucleic acid molecule encoding a variant hK2 polypeptide....http://www.google.fr/patents/US6013471?utm_source=gb-gplus-shareBrevet US6013471 - DNA encoding hK2 variant polypeptides
