Table 3. Relative comparison of coiled-coil parameters for gp26-2M fibers and gp26-wt.

	gp26-2M fibers				gp26-wt (PDB entry 3c9i)
Fiber	A	B	C	D	Molecule A
Coiled-coil parameters
Residues	42–195	42–195	42–195	42–195	42–139
Coiled-coil radius (Å)	6.15 ± 0.44	6.15 ± 0.45	6.15 ± 0.41	6.19 ± 0.45	6.13 ± 0.47
Residues/superhelical turn	93.6	93	98	98	95
Coiled-coil pitch (Å)	134.3 ± 19.9	133.5 ± 21.1	141.2 ± 19.3	140.5 ± 21.9	138.0 ± 16.9
Coiled-coil phase (°)/No. of residues	−598.91/154	−601.52/154	−571.95/154	−573.83/154	−370.65/98
α-Helical parameters
Residues per turn	3.63 ± 0.09	3.64 ± 0.10	3.63 ± 0.12	3.63 ± 0.12	3.64 ± 0.09
Rise per residue (Å)	1.51 ± 0.05	1.51 ± 0.05	1.51 ± 0.05	1.51 ± 0.05	1.51 ± 0.04
α-Helix radius (Å)	2.28 ± 0.06	2.28 ± 0.06	2.28 ± 0.07	2.28 ± 0.07	2.30 ± 0.05
Radius of curvature (Å)	66.34	67.15	71.51	70.72	80.52
Crick angles
Position a (°)	18.33 ± 2.6	17.36 ± 3.11	17.72 ± 2.74	18.20 ± 2.81	17.39 ± 3.01
Position d (°)	−31.99 ± 4.23	−32.56 ± 4.83	−32.52 ± 4.15	−32.60 ± 4.16	−34.49 ± 3.31