Figure 6.
Internalization of TeNT HC is dependent on a functional clathrin machinery. 25 h after microinjection of the AP-2 μ2T156A and tTA plasmids (d–f), or 26 h after microinjection of a plasmid encoding AP180-C (g–i), MNs were incubated with 20 nM b-TeNT HC and 10 ng/ml Alexa Fluor 555–CTB for 30 min, MESNA-treated, fixed, stained for internal biotin and the epitope tags of the microinjected constructs, and imaged. (a–c) Uninjected MNs were imaged as a control. Bar, 10 μm.