3BM3

Restriction endonuclease PspGI-substrate DNA complex

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4	294	20% MPD, 0.1 M citric acid, 0.1 M cobalt (II) chloride as an additive, pH 4.0, VAPOR DIFFUSION, SITTING DROP, temperature 294K

Crystal Properties
Matthews coefficient	Solvent content
2.01	38.84

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 46.884	α = 90
b = 96.06	β = 90
c = 127.069	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	MARRESEARCH	BENT MIRROR	2007-08-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MPG/DESY, HAMBURG BEAMLINE BW6	0.976	MPG/DESY, HAMBURG	BW6

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.7	20	98.7	0.065	21.3	3.3	63138	63138			20.7

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.7	1.72	98		0.254	3.2	3.1	2460

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		THROUGHOUT	1.7	19.38	63135	63135	3230	98.7	0.171	0.171	0.1698	0.1924	RANDOM	17.9

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]
-0.63			-1.11		1.74

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.037
r_dihedral_angle_4_deg	18.083
r_dihedral_angle_3_deg	13.786
r_dihedral_angle_1_deg	5.086
r_angle_other_deg	3.852
r_scangle_it	3.686
r_scbond_it	2.344
r_mcangle_it	1.417
r_angle_refined_deg	1.369
r_mcbond_it	0.785
r_symmetry_vdw_other	0.257
r_nbd_other	0.252
r_symmetry_vdw_refined	0.223
r_nbd_refined	0.222
r_nbtor_refined	0.199
r_xyhbond_nbd_refined	0.149
r_symmetry_hbond_refined	0.138
r_nbtor_other	0.103
r_chiral_restr	0.079
r_bond_refined_d	0.013
r_gen_planes_other	0.01
r_gen_planes_refined	0.008
r_bond_other_d
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4319
Nucleic Acid Atoms	445
Solvent Atoms	293
Heterogen Atoms	13

Software

Software
Software Name	Purpose
SHELXD	phasing
SHELXE	model building
DM	model building
ARP/wARP	model building
REFMAC	refinement
MAR345	data collection
DENZO	data reduction
SCALEPACK	data scaling
DM	phasing