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Hudson BP, Quispe J, Lara-González S, Kim Y, Berman HM, Arnold E, Ebright RH, Lawson CL.Hudson BP, et al. Among authors: lawson cl.Proc Natl Acad Sci U S A. 2009 Nov 24;106(47):19830-5. doi: 10.1073/pnas.0908782106. Epub 2009 Nov 10.Proc Natl Acad Sci U S A. 2009.PMID: 19903881Free PMC article.