Figure 1. Structure of UL16 in complex with MICBpf.

(A), Ribbon drawing of the structure of UL16. The portion of UL16 belonging to the V-type immunoglobin [35] superfamily fold is colored blue, and the N-terminal “plug” is colored red. Glycosylated asparagines (nitrogen atoms dark blue, oxygen atoms red) and attached N-acetylglucosamine residues (yellow) are shown as ball-and-stick models. The grey N-acetylglucosamine residue attached to Asn35 has high temperature factors and was therefore not included in the refinement. Disulfide bonds are shown in green. (B) Structure of the UL16-MICBpf complex. UL16 is colored as in (A), MICBpf is shown in orange. In order to visualize the native glycosylation of UL16, modeled glycans are shown in yellow as ball-and-stick models with a semitransparent surface. See Materials and Methods for details.