One-Pot Dual Labeling of IgG 1 and Preparation of C-to-C Fusion Proteins Through a Combination of Sortase A and Butelase 1. Harmand TJ, Bousbaine D, Chan A, et al. One-Pot Dual Labeling of IgG 1 and Preparation of C-to-C Fusion Proteins Through a Combination of Sortase A and Butelase 1. Bioconjug Chem. 2018;29(10):3245-3249. doi:10.1021/acs.bioconjchem.8b00563 Read more