Authors: Shihua Xu; Brian M McKeever; Douglas Wisniewski; Douglas K Miller; Robert H Spencer; Lin Chu; Feroze Ujjainwalla; Ting Ting Yamin; Jilly F Evans; Joseph W Becker; Andrew D Ferguson Journal: Acta Crystallogr Sect F Struct Biol Cryst Commun Date: 2007-11-30