2B5A

C.BclI, Control Element of the BclI Restriction-Modification System

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	25% (w/v) Polyethylene glyco 400, 25 mM ammonium sulfate, 50 mM citrate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.19	43.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 63.205	α = 90
b = 65.016	β = 90
c = 73.296	γ = 90

Symmetry
Space Group	P 21 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MARRESEARCH	58 cm long, Pt-coated, fused silica, vertical focusmirror, Cyclindrically bent triangular Si(111) asymmetric cut, horizontal focus monochromator	2002-03-27	M	SINGLE WAVELENGTH
2	1	x-ray		CCD	ADSC QUANTUM 4		2002-05-24	M	MAD
3	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL7-1	1.08	SSRL	BL7-1
2	SYNCHROTRON	SSRL BEAMLINE BL1-5	1.0061, 1.0088, 0.9076	SSRL	BL1-5

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	1.54	99	98.3	0.051	38	5.9	44934	44934			28.3

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	1.54	1.56	68.4	68.4	0.457	3.2		1526

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	1.543	19.741	44881	44881	2259	99.453	0.167	0.167	0.1652	0.2005	random	20.264

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]
0.008			-0.001		-0.006

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	21.239
r_dihedral_angle_4_deg	18.859
r_dihedral_angle_3_deg	12.008
r_scangle_it	6.081
r_dihedral_angle_1_deg	3.986
r_scbond_it	3.876
r_mcangle_it	3.414
r_scangle_other	2.814
r_mcbond_it	2.802
r_mcangle_other	2.022
r_angle_other_deg	1.441
r_angle_refined_deg	1.409
r_scbond_other	1.323
r_mcbond_other	0.721
r_symmetry_vdw_refined	0.317
r_symmetry_vdw_other	0.268
r_nbd_refined	0.24
r_nbtor_refined	0.182
r_nbd_other	0.176
r_xyhbond_nbd_refined	0.151
r_symmetry_hbond_refined	0.139
r_nbtor_other	0.082
r_chiral_restr	0.078
r_bond_refined_d	0.012
r_gen_planes_refined	0.005
r_symmetry_hbond_other	0.002
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2461
Nucleic Acid Atoms
Solvent Atoms	229
Heterogen Atoms	8

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MLPHARE	phasing
DM	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
Blu-Ice	data collection