Fig. 3

Time-lapse microscopy of NBPF1 expression in transfected HEK293T cells stimulated with aphidicolin. EGFP-luciferase or EGFP-NBPF1 expression was followed for 15 h with images captured every 10 min. Individual frames are shown. Original movies are available as Additional files 3 and 4. Fluorescence levels are represented by pseudocolors, with blue indicating low EGFP levels and yellow indicating high EGFP levels (ImageJ LUT; color codes shown at the bottom). (A) Expression of EGFP-luciferase in cells stimulated with aphidicolin remained at a constant level at all the indicated time points. (B) Expression of EGFP-NBPF1 in cells stimulated with aphidicolin showed increased accumulation in the form of particulate or aggregated structures. In no case were cells with decreasing levels of EGFP-NBPF1 observed