3O1Y

Electron transfer complexes: Experimental mapping of the redox-dependent cytochrome c electrostatic surface

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.4	300	High concentration of NaNO3 and 10% Ditionite in the wells, pH 7.4, VAPOR DIFFUSION, HANGING DROP, temperature 300K

Crystal Properties
Matthews coefficient	Solvent content
2.32	47

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 79.695	α = 90
b = 79.695	β = 90
c = 89.247	γ = 120

Symmetry
Space Group	P 31 2 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	CCD	OXFORD ONYX CCD		2008-03-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SEALED TUBE	OXFORD DIFFRACTION ENHANCE ULTRA	1.5418

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	1.75	69.01	95.3	0.116	9	2.9		31828

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	1.75	1.81	95.1	95.1	0.43	2.5	2.9

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	PDB ENTRY 1HRC	1.75	69.01	31828	1697	99.94	0.18863	0.18558	0.24761	RANDOM	17.894

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]
-0.3	-0.15		-0.3		0.45

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.338
r_dihedral_angle_4_deg	25.189
r_dihedral_angle_3_deg	14.05
r_dihedral_angle_1_deg	6.159
r_scangle_it	3.975
r_scbond_it	2.591
r_angle_refined_deg	1.742
r_mcangle_it	1.6
r_mcbond_it	1.104
r_nbtor_refined	0.301
r_symmetry_vdw_refined	0.271
r_symmetry_hbond_refined	0.227
r_nbd_refined	0.197
r_xyhbond_nbd_refined	0.16
r_chiral_restr	0.109
r_bond_refined_d	0.021
r_gen_planes_refined	0.014

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2478
Nucleic Acid Atoms
Solvent Atoms	507
Heterogen Atoms	217

Software

Software
Software Name	Purpose
AMoRE	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling