Table 2. Interatomic distances between equivalent atoms in different TTR tetramers.

	87/110/117 TTR mutant–wild type TTR (1F41)	87/110/117 TTR mutant—V122I TTR mutant (5A6I)	87/110/117 TTR mutant—87/110 TTR mutant (1GKO)	1F41 wild typeTTR—V122I TTR mutant (5A6I)	87/110/117 TTR mutant—4-hydroxy-chalcone—TTR complex(5EZP)
Thr 96 B	2.44	1.71	2.02	0.98	2.37
Thr 96 C (A’)	1.29	1.97	2.08	1.73	1.15
Thr 96 D (B’)	2.38	1.42	2.58	2.69	2.36
Leu55 B	1.77	2.26	2.13	0.77	1.06
Leu55 C (A’)	1.86	1.56	1.45	0.47	0.80
Leu55 D (B’)	2.27	1.52	2.67	2.11	1.90
Ser85 B	3.52	0.96	0.99	3.03	2.37
Ser85 C (A’)	3.42	2.39	3.27	2.65	2.26
Ser85 D (B’)	3.98	2.83	2.48	1.81	2.68

Distances (in Å) between Cα atoms for pair of proteins in subunits B, C and D, after superimposing subunit A of the models. Residues of monomer A are not indicated, since they are practically coincident. C and D labels correspond to A’ and B’ in the P2₁2₁2 space group, i.e. the crystallographic two-fold axis superimposes A’ to A and B’ to B.