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Figure 4
Comparison of crystal contacts for three types of molecules. (a) Chain A of the monoclinic structure, Mono. 1, 2, 3 and 4 are identical. (b) Chain A of the orthorhombic structure, Orth(A). 1A, 2A, 3A and 4A are identical. (c) Chain B of the orthorhombic structure, Orth(B). 1B, 2B, 3B and 4B are identical. (d) Amino-acid sequence representation of the three molecules. Thr65, Trp66 and Gly67 were replaced by the chromophore. For Mono, atoms belonging to contacts I, II and III are coloured blue, red and grey, respectively. For Orth(A) and Orth(B), atoms belonging to contacts IA, IB, IIAB, IIIAB, IVAB and VB are coloured blue, yellow, red, green, light blue and grey, respectively. Histograms of the distances between atom pairs in each crystal contact from (e) the monoclinic and (f) the orthorhombic crystal forms are shown.

Journal logoSTRUCTURAL
BIOLOGY
ISSN: 2059-7983
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