Experiment: 4LJL

Structural insights into the unique single-stranded DNA binding mode of DNA processing protein A from Helicobacter pylori

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4LJK	PDB ENTRY 4LJK

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	293	25% PEG3350, 100 mM Bis-Tris, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 293.0K

Crystal Properties
Matthews coefficient	Solvent content
3.36	63.39

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 171.09	α = 90
b = 107.86	β = 90
c = 37.47	γ = 90

Symmetry
Space Group	P 21 21 2

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	MAR CCD 165 mm		2010-01-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRF BEAMLINE BL17U	0.9792	SSRF	BL17U

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.2	45.62	95.9			36288	34651

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	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	MOLECULAR REPLACEMENT	PDB ENTRY 4LJK	2.2	39.76	34008	1690	93.74	0.1718	0.1696	0.1665	0.213	0.2064	random

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]
-13.0833			18.5093		-5.426

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	13.643
f_angle_d	0.976
f_chiral_restr	0.066
f_bond_d	0.006
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3430
Nucleic Acid Atoms
Solvent Atoms	321
Heterogen Atoms

Software

Software
Software Name	Purpose
ADSC	data collection
PHASES	phasing
PHENIX	refinement
MOSFLM	data reduction
SCALA	data scaling