Research Article

Electrostatic Interactions between Complement Regulator CD46(SCR1-2) and Adenovirus Ad11/Ad21 Fiber Protein Knob

Figure 7

Distances for salt bridge interactions of Glu63 in CD46(SCR1-2) with Arg residues in Ad11k (a) and Ad21k (b). It is noted that, in Ad21k, Glu63 forms a bifurcated salt bridge with Arg247(B) and Arg279(B), whereas, in Ad11k, Glu63 forms a single salt bridge with Arg280(A), using a cutoff distance of 5 Å for salt bridge formation. Molecular graphics were generated using Chimera [28].
(a)
(b)