Figure 6.

The glycosylation sites of high-Ca²⁺ (a) native bovine and (b) recombinant bovine. The labeled residues are involved in the stabilization of the glycosylation site and the Ca²⁺-dependent stretch of residues under high-Ca²⁺ conditions (Glu350 through Glu354). The dashed black lines indicate hydrogen bonds. The polypeptide backbone of native and recombinant bovine Casq1 are traced in green and yellow, respectively; and their respective dimeric partners are traced in gray. Green/yellow sticks are carbon atoms, red sticks are oxygen atoms, blue sticks are nitrogen atoms, and pink spheres are Ca²⁺ ions.