Fig. 5.
Characterization of TPP1F-deficient cells. (A) Mutant 1-13 and 1-20 do not express the ∼65 kDa protein as revealed by analysis of whole-cell lysates (5×105 cell equivalents per lane) with mAb K88-254-3 (TPP1F). Loading was assessed using cap34-specific mAb 135-409. (B) TPP1 activity is not impaired in growing mutant cells. Lysates from equal numbers of cells were used in the TPP1 assay. The data are the mean±s.d. from four independent experiments. The results from AX2 were set to 100%. The differences were not statistically significant.