2EIR

Design of Disulfide-linked Thioredoxin Dimers and Multimers Through Analysis of Crystal Contacts

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.5	277	45% MPD, 5MM CUPRIC ACETATE, 0.1M SODIUM ACETATE, pH 4.50, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.43	49.35

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.047	α = 90
b = 51.042	β = 90.43
c = 88.973	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	RIGAKU RAXIS VII		2005-08-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU FR-E+ DW

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	2.5	33.54	88.6	0.093	0.093		3.3	15797	15051

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.5	2.59	70		0.357	0.357		1.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	2TRX	2.5	33.54	14301	750	95.3	0.236	0.232	0.311	RANDOM	28.98

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]
		0.12	0.02		-0.03

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.221
r_dihedral_angle_4_deg	18.752
r_dihedral_angle_3_deg	17.685
r_dihedral_angle_1_deg	5.824
r_scangle_it	2.187
r_angle_refined_deg	1.447
r_scbond_it	1.339
r_mcangle_it	0.996
r_mcbond_it	0.566
r_nbtor_refined	0.301
r_symmetry_vdw_refined	0.239
r_metal_ion_refined	0.223
r_nbd_refined	0.22
r_xyhbond_nbd_refined	0.162
r_symmetry_hbond_refined	0.151
r_chiral_restr	0.09
r_bond_refined_d	0.011
r_gen_planes_refined	0.004
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3256
Nucleic Acid Atoms
Solvent Atoms	41
Heterogen Atoms	4

Software

Software
Software Name	Purpose
MOLREP	phasing
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling