Correction for Merz, What are the roles of V-ATPases in membrane fusion?

COMMENTARY Correction for “What are the roles of V-ATPases in membrane fusion?,” by Alexey J. Merz, which appeared in issue 1, January 6, 2015, of Proc Natl Acad Sci USA (112: 8–9; first published December 24, 2014; 10.1073/pnas.1422280112).

The authors note that on page 8, middle column, first full paragraph, lines 10–11, “VopQ forms a 40 Å membrane pore” should instead appear as “VopQ forms an 18 Å membrane pore.”