BIOPHYSICS, CHEMISTRY. For the article “Transformation mechanism of amorphous calcium carbonate into calcite in the sea urchin larval spicule,” by Yael Politi, Rebecca A. Metzler, Mike Abrecht, Benjamin Gilbert, Fred H. Wilt, Irit Sagi, Lia Addadi, Steve Weiner, and Pupa Gilbert, which appeared in issue 45, November 11, 2008, of Proc Natl Acad Sci USA (105:17362–17366; first published November 5, 2008; 10.1073/pnas.0806604105), the authors note that the author name Pupa Gilbert should have appeared as P. U. P. A. Gilbert. The author line has been corrected online. In addition, in the author contributions footnote and in the Acknowledgments, the initials P.G. should appear as P.U.P.A.G. The corrected author line appears below.
Yael Politi, Rebecca A. Metzler, Mike Abrecht, Benjamin Gilbert, Fred H. Wilt, Irit Sagi, Lia Addadi, Steve Weiner, and P. U. P. A. Gilbert