5XSS:
reference: Molecular mechanism of environmental d-xylose perception by a XylFII-LytS complex in bacteria., Li J, Wang C, Yang G, Sun Z, Guo H, Shao K, Gu Y, Jiang W, Zhang P, Proc Natl Acad Sci U S A. 2017 Aug 1;114(31):8235-8240. doi:, 10.1073/pnas.1620183114. Epub 2017 Jul 17. PMID: 28716923

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