2FKI:
reference: NMR structure of protein yjbR from Escherichia coli reveals 'double-wing' DNA binding motif., Singarapu KK, Liu G, Xiao R, Bertonati C, Honig B, Montelione GT, Szyperski T, Proteins. 2007 May 1;67(2):501-4. PMID: 17266124

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