Figure 2.
Characterization of Binding between HKU4-RBD and hCD26 by Flow Cytometry
(A) Huh7 cells stained with an anti-hCD26 antibody.
(B) Huh7 cells stained with MERS-RBD, HKU4-EBD, or HKU5-RBD.
(C) Huh7 cells stained with HKU4-RBD in the presence of an anti-hCD26 antibody or an isocontrol antibody.
(D) Huh7 cells stained with HKU4-RBD in the presence of hCD26 (hCD26-ecto) or hACE2 (hACE2-ecto) ectodomain protein.
(E) BHK cells stained with an anti-hCD26 antibody.
(F) BHK cells stained with MERS-RBD, HKU4-RBD, or HKU5-RBD.
(G) hCD26-transfected BHK cells stained with an anti-hCD26 antibody.
(H) hCD26-transfected BHK cells stained with MERS-RBD, HKU4-RBD, or HKU5-RBD.