2Q8U

CRYSTAL STRUCTURE OF MRE11 FROM THERMOTOGA MARITIMA MSB8 (TM1635) AT 2.20 A RESOLUTION

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.57	277	NANODROP, 10.3% PEG 6000, 0.1M MES pH 5.57, VAPOR DIFFUSION, SITTING DROP, temperature 277K
2	VAPOR DIFFUSION, SITTING DROP	5.14	277	NANODROP, 2.5% PEG 6000, 0.1M MES pH 5.14, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 47.598	α = 90
b = 113.414	β = 101.77
c = 80.951	γ = 90

Symmetry
Space Group	P 1 21 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	CCD	MARMOSAIC 325 mm CCD	Flat mirror (vertical focusing)	2007-05-13	M	MAD
2	2

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.98086	SSRL	BL11-1
2	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.91837, 0.97917, 0.97891	SSRL	BL11-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.2	37.45	98.8	0.043	0.043	11.3	2.6		56132			43.03

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.26	99.5		0.533	0.533	0.9	2.5	3132

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2.2	37.45	42148	2120	98.71	0.2	0.198	0.241	RANDOM	41.949

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]
-2.12		0.5	2.73		-0.41

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.069
r_dihedral_angle_4_deg	19.627
r_dihedral_angle_3_deg	15.898
r_scangle_it	10.128
r_scbond_it	8.361
r_dihedral_angle_1_deg	6.673
r_mcangle_it	5.283
r_mcbond_it	4.038
r_mcbond_other	1.477
r_angle_refined_deg	1.428
r_angle_other_deg	0.817
r_symmetry_vdw_other	0.315
r_nbd_refined	0.233
r_nbd_other	0.218
r_xyhbond_nbd_refined	0.214
r_symmetry_hbond_refined	0.192
r_nbtor_refined	0.191
r_xyhbond_nbd_other	0.135
r_nbtor_other	0.093
r_symmetry_vdw_refined	0.076
r_chiral_restr	0.065
r_bond_refined_d	0.016
r_gen_planes_refined	0.015
r_bond_other_d	0.002
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4778
Nucleic Acid Atoms
Solvent Atoms	159
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
SHELX	phasing
MolProbity	model building
SCALA	data scaling
PDB_EXTRACT	data extraction
MAR345	data collection
MOSFLM	data reduction
SHELXD	phasing
autoSHARP	phasing