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Comparison of the acceptor substrate-binding sites of the C-terminal domain of yeast Stt3p (A) and its prokaryotic homologs: AglB protein from the archaeon P. furiosus (B) and PglB proteins from the bacteria C. jejuni (C) and C. lari (D). B–D were prepared using Protein Data Bank codes 2ZAI, 3AAG, and 3RCE, respectively.
