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Vyas NK, Vyas MN, Chervenak MC, Bundle DR, Pinto BM, Quiocho FA.Vyas NK, et al. Among authors: vyas mn.Proc Natl Acad Sci U S A. 2003 Dec 9;100(25):15023-8. doi: 10.1073/pnas.2431286100. Epub 2003 Nov 25.Proc Natl Acad Sci U S A. 2003.PMID: 14645714Free PMC article.