2XRC

Human complement factor I

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1EKB	PDB ENTRIES 1EKB, 1BY2, 1J8E AND 3B4V
experimental model	PDB	1BY2	PDB ENTRIES 1EKB, 1BY2, 1J8E AND 3B4V
experimental model	PDB	1J8E	PDB ENTRIES 1EKB, 1BY2, 1J8E AND 3B4V
experimental model	PDB	3B4V	PDB ENTRIES 1EKB, 1BY2, 1J8E AND 3B4V

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		4		20.0-23.5% PEG 1500, 0.1M SODIUM SUCCINATE PH 4.0, 1MM CACL2

Crystal Properties
Matthews coefficient	Solvent content
2.65	54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 71.317	α = 89.98
b = 234.721	β = 90.18
c = 40.3	γ = 90.03

Symmetry
Space Group	P 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	120	CCD	ADSC CCD	MIRRORS	2009-11-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I02		Diamond	I02

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	2.65	79	90.8	0.11	10.5	2.9		68978			53.4

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	2.65	2.79	90.1		0.41	2	2.5

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 ENTRIES 1EKB, 1BY2, 1J8E AND 3B4V	2.69	79	61930	3252	90	0.20151	0.19959	0.23821	RANDOM	43.172

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]
40.54	-11.14	5.73	-24.97	-8.07	-15.57

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.756
r_dihedral_angle_3_deg	14.637
r_dihedral_angle_4_deg	9.848
r_dihedral_angle_1_deg	5.518
r_angle_refined_deg	0.9
r_angle_other_deg	0.765
r_chiral_restr	0.054
r_bond_refined_d	0.006
r_bond_other_d	0.006
r_gen_planes_refined	0.003
r_gen_planes_other	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_it
r_mcbond_other
r_mcangle_it
r_mcangle_other
r_scbond_it
r_scbond_other
r_scangle_it
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	14581
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	316

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
SCALA	data scaling
PHASER	phasing