BIOCHEMISTRY Correction for “Crystal structure analysis reveals Pseudomonas PilY1 as an essential calcium-dependent regulator of bacterial surface motility,” by Jillian Orans, Michael D. L. Johnson, Kimberly A. Coggan, Justin R. Sperlazza, Ryan W. Heiniger, Matthew C. Wolfgang, and Matthew R. Redinbo, which appeared in issue 3, January 19, 2010, of Proc Natl Acad Sci USA (107:1065–1070; first published December 28, 2009; 10.1073/pnas.0911616107).
The authors note that due to a printer’s error, on page 1065, right column, first full paragraph, seventh line, and page 1069, right column, second paragraph, seventh line, the amino acids 6145–1163 should instead appear as 615–1163. This error does not affect the conclusions of the article.