3EEY

CRYSTAL STRUCTURE OF PUTATIVE RRNA-METHYLASE FROM Clostridium thermocellum

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		4.5	294	100MM SODIUM ACETATE, PH 4.5, 30% PEG8000, 200MM LITHIUM SULFATE, 10% GLYCEROL, 294K, pH 4.50

Crystal Properties
Matthews coefficient	Solvent content
2.53	51.41

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 70.156	α = 90
b = 126.913	β = 99.54
c = 125.611	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 315	MIRRORS	2008-07-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A		NSLS	X29A

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	2.2	50	99.2	0.081	5.5	2.9		109977		-5

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	2.2	2.28	98.3		0.6	0.8	2.9

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	SAD	THROUGHOUT	2.2	20	105464	3256	99.13	0.24468	0.24361	0.27843	RANDOM	55.003

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]
-4.25		1.23	2.23		2.43

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.908
r_dihedral_angle_3_deg	17.138
r_dihedral_angle_4_deg	15.825
r_scangle_it	10.391
r_scbond_it	7.309
r_mcangle_it	6.524
r_dihedral_angle_1_deg	5.759
r_mcbond_it	4.509
r_angle_refined_deg	1.176
r_nbtor_refined	0.291
r_symmetry_hbond_refined	0.189
r_symmetry_vdw_refined	0.177
r_xyhbond_nbd_refined	0.152
r_nbd_refined	0.139
r_chiral_restr	0.072
r_bond_refined_d	0.008
r_gen_planes_refined	0.003
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_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	14565
Nucleic Acid Atoms
Solvent Atoms	360
Heterogen Atoms	292

Software

Software
Software Name	Purpose
SHELX	model building
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling
SHELX	phasing