Measuring Binding of Protein to Gel-Bound Ligands Using Magnetic Levitation
作者:Nathan D. Shapiro、Katherine A. Mirica、Siowling Soh、Scott T. Phillips、Olga Taran、Charles R. Mace、Sergey S. Shevkoplyas、George M. Whitesides
DOI:10.1021/ja211788e
日期:2012.3.28
This paper describes the use of magnetic levitation (MagLev) to measure the association of proteins and ligands. The method starts with diamagnetic gel beads that are functionalized covalently with small molecules (putative ligands). Binding of protein to the ligands within the bead causes a change in the density of the bead. When these beads are suspended in a paramagnetic aqueous buffer and placed