4N9H:
reference: Structures of inactive CRP species reveal the atomic details of the allosteric transition that discriminates cyclic nucleotide second messengers., Seok SH, Im H, Won HS, Seo MD, Lee YS, Yoon HJ, Cha MJ, Park JY, Lee BJ, Acta Crystallogr D Biol Crystallogr. 2014 Jun;70(Pt 6):1726-42. doi:, 10.1107/S139900471400724X. Epub 2014 May 30. PMID: 24914983

This OCA Structure page
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