2CTZ | pdb_00002ctz

Crystal structure of o-acetyl homoserine sulfhydrylase from Thermus thermophilus HB8

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	295	0.25% dichloromethane, 1.8M sodim/potassium phosphate, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
6.599191	81.361351

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 149.095	α = 90
b = 149.095	β = 90
c = 219.299	γ = 90

Symmetry
Space Group	I 41

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	RIGAKU JUPITER 210		2004-06-11	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE	0.9791, 0.9794, 0.9000	SPring-8

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	2.6	19.88	100	0.111		3.8		69366	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	2.6	2.666	100		0.27			5060

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2.6	19.88	1	73056	69366	3690	100	0.18857	0.18706	0.21716	RANDOM	38.018

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]
-0.04			-0.04		0.07

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.066
r_dihedral_angle_3_deg	23.001
r_dihedral_angle_4_deg	20.505
r_dihedral_angle_1_deg	7.762
r_scangle_it	5.874
r_scbond_it	3.756
r_angle_refined_deg	2.517
r_mcangle_it	2.428
r_mcbond_it	1.514
r_nbtor_refined	0.332
r_symmetry_vdw_refined	0.319
r_nbd_refined	0.267
r_chiral_restr	0.206
r_symmetry_hbond_refined	0.195
r_xyhbond_nbd_refined	0.176
r_bond_refined_d	0.03
r_gen_planes_refined	0.011

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6522
Nucleic Acid Atoms
Solvent Atoms	174
Heterogen Atoms	30

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
CCP4	data scaling
SOLVE	phasing