4RKI

Crystal structure of sliding beta clamp from Helicobacter pylori

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2AWA

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.3	289	6% Peg20000, 20% Peg550MME, 0.1M Hepes+MOPS pH7.3, 0.2M Ammonium citrate dibasic, 10mM MgCl2+10mM SrCl2, VAPOR DIFFUSION, HANGING DROP, temperature 289K

Crystal Properties
Matthews coefficient	Solvent content
2.54	51.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 89.534	α = 90
b = 65.886	β = 115.79
c = 82.723	γ = 90

Symmetry
Space Group	C 1 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	IMAGE PLATE	MAR scanner 345 mm plate		2014-06-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM14	0.769	ESRF	BM14

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.05	50	99.5	0.06	29.43	3.8		52832		-3	39.7

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.05	2.09	95		0.54	2.05	3.5	2442

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	MR SAD	THROUGHOUT	2AWA	2.05	50	52832	25673	1358	98.56	0.21658	0.2149	0.24729	RANDOM	53.213

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]
3.16		1.33	-5.05		0.42

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.807
r_dihedral_angle_4_deg	13.69
r_dihedral_angle_3_deg	13.664
r_dihedral_angle_1_deg	6.385
r_long_range_B_refined	5.733
r_long_range_B_other	5.719
r_scangle_other	3.287
r_mcangle_it	2.864
r_mcangle_other	2.864
r_scbond_it	2.042
r_scbond_other	2.041
r_mcbond_it	1.801
r_mcbond_other	1.801
r_angle_refined_deg	1.136
r_angle_other_deg	0.678
r_chiral_restr	0.064
r_bond_refined_d	0.006
r_gen_planes_refined	0.004
r_bond_other_d	0.001
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_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2967
Nucleic Acid Atoms
Solvent Atoms	55
Heterogen Atoms

Software

Software
Software Name	Purpose
DNA	data collection
PHENIX	model building
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHENIX	phasing