Nature Structural Biology 9, 131–136 (2002).

Two mistakes were introduced during production of this paper. On page 131, in the first paragraph of the introduction, a sentence β€œThe multifunctional DBP also binds monomeric actin (G-actin) and slowly depolymerizes filamentous actin.” was inadvertently inserted. The correct version of this part of the introduction should read: β€œExperiments with DBP knockout mice have shown that DBP protects against dietary vitamin D3 deficiency4. In addition, the DBP–25OHD3 complex is reabsorbed in the proximal tubulus by the endocytic receptor megalin6.”

In Fig. 1, the positions of substituents R2 and R3 of the vitamin D3 ligands were incorrectly labeled on the chemical formula. The correct formula is reproduced. We apologize for any confusion these mistakes may have caused.