4IVN:
reference: Structural insights into the regulation of sialic acid catabolism by the Vibrio vulnificus transcriptional repressor NanR., Hwang J, Kim BS, Jang SY, Lim JG, You DJ, Jung HS, Oh TK, Lee JO, Choi SH, Kim MH, Proc Natl Acad Sci U S A. 2013 Jul 23;110(30):E2829-37. doi:, 10.1073/pnas.1302859110. Epub 2013 Jul 5. PMID: 23832782

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