GTPase activity of dynamin-2 is required for endocytosis of cell-surface tTG. MRC-5 fibroblasts were transiently transfected with either wild-type (wt) or a GTPase-deficient dynamin-2 mutant (K44A) with a hemagglutinin (HA) tag.(Provided by Evgeny A. Zemskov, Irina Mikhailenko:Journal of Cell Science 120, 3188-3199 (2007))