Figure 5
Chemical stability of the nitroxide labels in cell extracts. (a,b) cw spectra of BaxWTR1, BaxWTIAG and BaxWTMAG after incubation with E. coli (a) or HeLa (b) cell extracts. The final cell dilution factor is 6-fold (see Methods). Data on the stability of Gd-DOTA in cell extracts is given in Supp. Fig. 12.
