Backbone 1H, 13C and 15N chemical shift assignments for the Brucella D4.4 VH antibody fragment - Vranken, Wim F.; Tolkatchev, Dmitri; Xu, Ping; Tanha, Jamshid; Chen, Zhigang; Narang, Saran; Ni, Feng (Biological Magnetic Resonance Bank, 2002)