Experiment: 3C94

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	298	18-27% PEG4000, 0.1-0.15M MgCl(2), 0.1 M Tris-HCl; 2:1 ratio of SSB-Ct peptide:exonuclease U, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.47	50.12

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 67.151	α = 90
b = 92.191	β = 90
c = 91.277	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	110	CCD	ADSC QUANTUM 315		2006-08-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-D	0.9000	APS	21-ID-D

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	2.7	20	98	0.079	13.5	3.7	16401	16073

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	2.7	2.8	88.2		0.383		3.8	1412

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1FXX	2.7	20	16048	15912	800	99.15	0.201	0.201	0.198	0.251	RANDOM	49.763

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]
0.13			2.84		-2.97

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.713
r_dihedral_angle_3_deg	18.995
r_dihedral_angle_4_deg	17.851
r_dihedral_angle_1_deg	6.242
r_scangle_it	2.508
r_scbond_it	1.512
r_angle_refined_deg	1.052
r_mcangle_it	0.985
r_mcbond_it	0.56
r_nbtor_refined	0.312

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.713
r_dihedral_angle_3_deg	18.995
r_dihedral_angle_4_deg	17.851
r_dihedral_angle_1_deg	6.242
r_scangle_it	2.508
r_scbond_it	1.512
r_angle_refined_deg	1.052
r_mcangle_it	0.985
r_mcbond_it	0.56
r_nbtor_refined	0.312
r_symmetry_vdw_refined	0.227
r_nbd_refined	0.22
r_xyhbond_nbd_refined	0.149
r_symmetry_hbond_refined	0.13
r_chiral_restr	0.078
r_metal_ion_refined	0.071
r_bond_refined_d	0.013
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3782
Nucleic Acid Atoms
Solvent Atoms	42
Heterogen Atoms	2

Software

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

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.