1G6U:
reference: Design of three-dimensional domain-swapped dimers and fibrous oligomers., Ogihara NL, Ghirlanda G, Bryson JW, Gingery M, DeGrado WF, Eisenberg D, Proc Natl Acad Sci U S A 2001 Feb 13;98(4):1404-9. PMID: 11171963

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