7F8T

Re-refinement of the 2XRY X-ray structure of archaeal class II CPD photolyase from Methanosarcina mazei

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		277	0.5 M LITHIUM SULFATE, 7.5% (W/V) PEG 8000

Crystal Properties
Matthews coefficient	Solvent content
2.69	54.25

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 69.77	α = 90
b = 69.77	β = 90
c = 243.08	γ = 90

Symmetry
Space Group	P 43 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		CCD	ADSC QUANTUM 315r		2008-02-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29	0.88567	ESRF	ID29

Data Collection

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	2XRY	1.5	19.94	1.38	87280	1305	89.85	0.1704	0.17	0.1987

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	13.238
f_angle_d	1.488
f_chiral_restr	0.072
f_bond_d	0.018
f_plane_restr	0.012

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3677
Nucleic Acid Atoms
Solvent Atoms	375
Heterogen Atoms	110

Software

Software
Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XSCALE	data scaling
PHASER	phasing