2XQO

CtCel124: a cellulase from Clostridium thermocellum

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION		293	1 MICROL OF PROTEIN (60 MG/ML IN SOLUTION WITH CELLOHEXAOSE) MIXED WITH 1 MICROL OF RESERVOIR SOLUTION (8% (V/V) TACSIMATE PH 5 AND 20% (W/V) PEG 3350)

Crystal Properties
Matthews coefficient	Solvent content
2.13	40

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 74.01	α = 90
b = 74.01	β = 90
c = 74.93	γ = 120

Symmetry
Space Group	P 32 2 1

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 4		2009-10-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4	0.954	ESRF	ID14-4

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	1.4	32.1	98.1	0.09	13	10.3		41381		2	16.1

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	1.4	1.48	96.8		0.9	2.4	10

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	NONE	1.4	32.05	41381	4663	97.6	0.178	0.175	0.204	RANDOM	19.2

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]
0.02	0.01		0.02		-0.02

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.01
r_dihedral_angle_4_deg	13.249
r_dihedral_angle_3_deg	11.798
r_dihedral_angle_1_deg	5.795
r_angle_refined_deg	2.272
r_chiral_restr	0.173
r_bond_refined_d	0.028
r_gen_planes_refined	0.015
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1704
Nucleic Acid Atoms
Solvent Atoms	310
Heterogen Atoms	69

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALA	data scaling
SOLVE	phasing