Figure 5From: Biochemical characterization of three putative ATPases from a new type IV secretion system of Aeromonas veronii plasmid pAC3249AFluorescence spectra of TNP-ATP and TNP-CTP-bound TraK. TraK showed stronger binding activity to ATP than to CTP with a shift of ~15-20 nm (to lower wavelengths) in the absorption maximum of the fluorescent ATP and CTP analogues.Back to article page