2QFF | pdb_00002qff

Crystal structure of Staphylococcal Complement Inhibitor

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	293	protein solution: 24 mg/ml SCIN in 50 mM NaCl, 20 mM TRIS, pH 8.0 well solution: 35% (w/v) PEG 1000, 0.1 M PCB-buffer (0.04 M sodium propionate, 0.02 M sodium cacodylate, 0.04 M bis-tris-propane) pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.65	25.46

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 23.017	α = 90
b = 42.775	β = 90
c = 63.91	γ = 90

Symmetry
Space Group	P 21 21 21

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	ADSC QUANTUM 4		2005-05-15	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4	0.9793, 0.9795, 0.9763	ESRF	ID14-4

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	1.8	40		0.081	19.5	7.1		6281

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	1.8	1.9			0.425	3.7	7.5

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.8	35.56	5952	294	99.87	0.20221	0.20113	0.1981	0.2259	0.2291	RANDOM	21.935

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]
-0.03			-0.68		0.71

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.603
r_dihedral_angle_3_deg	13.996
r_dihedral_angle_1_deg	3.311
r_scangle_it	1.528
r_scbond_it	0.942
r_angle_refined_deg	0.792
r_mcangle_it	0.478
r_dihedral_angle_4_deg	0.364
r_mcbond_it	0.308
r_nbtor_refined	0.288
r_symmetry_hbond_refined	0.22
r_nbd_refined	0.175
r_symmetry_vdw_refined	0.15
r_xyhbond_nbd_refined	0.09
r_chiral_restr	0.064
r_bond_refined_d	0.006
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	607
Nucleic Acid Atoms
Solvent Atoms	42
Heterogen Atoms

Software

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