2CY1:
reference: Crystallization of the archaeal transcription termination factor NusA: a significant decrease in twinning under microgravity conditions., Tanaka H, Umehara T, Inaka K, Takahashi S, Shibata R, Bessho Y, Sato M, Sugiyama S, Fusatomi E, Terada T, Shirouzu M, Sano S, Motohara M, Kobayashi T, Tanaka T, Tanaka A, Yokoyama S, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2007 Feb 1;63(Pt, 2):69-73. Epub 2007 Jan 17. PMID: 17277442

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