3RA3

Crystal structure of a section of a de novo design gigaDalton protein fibre

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.5	291	0.2M zinc acetate, 0.1M sodium acetate, 10%(w/v) PEG 3K, pH 4.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
3	58.94

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 45.082	α = 90
b = 45.082	β = 90
c = 67.593	γ = 120

Symmetry
Space Group	P 32

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100					M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I04	1.7	Diamond	I04

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	2.3	25	99.8	0.102	21	8.2		6777

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.3	2.38	98.8		0.606	1.95	5	1388

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	2.31	22.54	6762	701	99.81	0.1941	0.1882	0.248	RANDOM	45.7517

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
5.04			5.04		-10.08

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.388
r_dihedral_angle_3_deg	21.487
r_dihedral_angle_4_deg	10.957
r_dihedral_angle_1_deg	6.526
r_scangle_it	6.262
r_scbond_it	3.561
r_mcangle_it	2.034
r_angle_refined_deg	1.816
r_mcbond_it	1.03
r_chiral_restr	0.104
r_bond_refined_d	0.02
r_gen_planes_refined	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	857
Nucleic Acid Atoms
Solvent Atoms	34
Heterogen Atoms	1

Software

Software
Software Name	Purpose
SHELX	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
DENZO	data reduction
SCALEPACK	data scaling
SHELXD	phasing