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Figure 1.
C^[alpha] traces of the NaCl/Tris form (blue) and the 1qnj
structure (orange). The catalytic triad, Ser195, His57 and
Asp102, is shown in a ball-and-stick representation. A chloride
ion (green ball) binds near the catalytic triad and Tris
(displayed in stick representation) binds to the S4 and S5
subsites. Acta Crystallogr Sect F Struct Biol Cryst Commun. 2006
July 1; 62(Pt 7): 623–626. Published online 2006 June 26. doi:
10.1107/S1744309106023001. Copyright [copyright] International
Union of Crystallography 2006
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