microbiology. For the article “Amplification of the entire kanamycin biosynthetic gene cluster during empirical strain improvement of Streptomyces kanamyceticus,” by Koji Yanai, Takeshi Murakami, and Mervyn Bibb, which appeared in issue 25, June 20, 2006, of Proc. Natl. Acad. Sci. USA (103, 9661–9666; first published June 9, 2006; 10.1073/pnas.0603251103), the authors note that several errors appeared in the flanking sequences for Fig. 6. The corrected figure and its legend appear below. This error does not affect the conclusions of the article.
Fig. 6.
Nucleotide sequences of the recombination and junction sites. (A) RsA, RsB, and the RsA/RsB junction. (B) RsC, RsD, and the RsC/RsD junction. Note conservation of 6 (A) and 38 (B) nt at the recombination and junction sites, respectively.