2G0Y:
reference: Characterization of two potentially universal turn motifs that shape the repeated five-residues fold--crystal structure of a lumenal pentapeptide repeat protein from Cyanothece 51142., Buchko GW, Ni S, Robinson H, Welsh EA, Pakrasi HB, Kennedy MA, Protein Sci. 2006 Nov;15(11):2579-95. PMID: 17075135

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