Extended Data Fig. 1: NMR 1H assay.

a, Preparation for assay in DMSO-d6. b, Preparation for assay in buffer. Shown are volumes suggested for 3-mm NMR tubes, and volumes for 5-mm tubes are in parentheses.
a, Preparation for assay in DMSO-d6. b, Preparation for assay in buffer. Shown are volumes suggested for 3-mm NMR tubes, and volumes for 5-mm tubes are in parentheses.