Import of IP and export of EP depend on signal sequences, extracts providing soluble transport cofactors, and metabolic energy, and can be inhibited by WGA. (A) From confocal scans as shown in Fig. 1C the time-dependent fluorescence of many filter pores was derived and averaged. Omission of extracts, addition of the ATPase apyrase, or the lectin WGA inhibits transport. (B) Analogous experiments pertaining to the export of EP. (C) CP, containing no localization signal, is neither imported nor exported.