In the article “The RCK2 Domain Uses a Coordination Site Present in Kir Channels to Confer Sodium Sensitivity to Slo2.2 Channels” by Zhe Zhang, Avia Rosenhouse-Dantsker, Qiong-Yao Tang, Sergei Noskov, and Diomedes E. Logothetis, which appeared on pages 7554–7562 of the June 2, 2010 issue, the wrong Slack (KCNT1) accession number NP 942057 was cited in the Materials and Methods section. The correct accession number is NM-021853.1 and the Gene ID is 60444. The authors regret any inconvenience caused by this error.