2NRR

Crystal structure of the C-terminal RNAseH endonuclase domain of UvrC

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	295	2.4 M sodium chloride, 0.1 M sodium acetate (pH 4.6) and 0.1 M lithium sulfate, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2	38.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 38.048	α = 90
b = 46.516	β = 90
c = 84.501	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		2004-10-12	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X26C	1.0, 1.07249, 1.07114	NSLS	X26C

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	1.2	40	99.6	0.067	13.1		47662	47662	2	2

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	1.24	99.2		0.417			4650

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.2	40	45214	47626	2412	99.81	0.184	0.184	0.183	0.218	RANDOM	19.909

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]
-0.58			1.57		-0.98

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.08
r_dihedral_angle_4_deg	21.089
r_dihedral_angle_3_deg	13.338
r_dihedral_angle_1_deg	5.745
r_scangle_it	5.626
r_scbond_it	4.318
r_mcangle_it	3.008
r_mcbond_it	2.562
r_mcbond_other	1.939
r_angle_refined_deg	1.585
r_angle_other_deg	0.871
r_symmetry_vdw_other	0.332
r_xyhbond_nbd_refined	0.269
r_symmetry_hbond_refined	0.265
r_symmetry_vdw_refined	0.249
r_nbd_refined	0.23
r_nbd_other	0.206
r_nbtor_refined	0.187
r_chiral_restr	0.11
r_nbtor_other	0.088
r_xyhbond_nbd_other	0.055
r_bond_refined_d	0.016
r_gen_planes_refined	0.007
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1125
Nucleic Acid Atoms
Solvent Atoms	195
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing
RESOLVE	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction