1Q8R

Structure of E.coli RusA Holliday junction resolvase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	290	PEG 4000, sodium acetate, Tris-HCl, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 290K

Crystal Properties
Matthews coefficient	Solvent content
1.99	38.17

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 45.352	α = 90
b = 50.052	β = 101.42
c = 49.597	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	ADSC QUANTUM 4	tungsten carbide primary slits, Si crystal monochromator, tungsten carbide secondary slits, toroidal zerodur mirror	2001-04-25	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4	0.97943	ESRF	ID14-4

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	1.899	50	97	0.028	0.036	12.25	3.7	17267	17267			26.5

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	1.899	1.95	97		0.1028	0.151	8.58	3.6	1258

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	MAD	THROUGHOUT	NONE	1.899	48.8	17267	16398	868	99.48	0.231	0.19199	0.19011	0.22622	RANDOM	18.064

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]
-2.33		0.01	-0.99		3.32

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.426
r_scangle_it	5.267
r_scbond_it	3.462
r_mcangle_it	2.718
r_mcbond_it	1.542
r_angle_refined_deg	1.456
r_angle_other_deg	0.742
r_symmetry_vdw_other	0.283
r_nbd_other	0.269
r_nbd_refined	0.238
r_symmetry_vdw_refined	0.217
r_xyhbond_nbd_refined	0.205
r_symmetry_hbond_refined	0.176
r_nbtor_other	0.093
r_chiral_restr	0.089
r_bond_refined_d	0.009
r_gen_planes_refined	0.006
r_bond_other_d	0.002
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1757
Nucleic Acid Atoms
Solvent Atoms	131
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SHELXD	phasing
REFMAC	refinement