1O50

Crystal structure of a cbs domain-containing protein (tm0935) from thermotoga maritima at 1.87 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION,SITTING DROP,NANODROP	6	277	crystal 1: 20% PEG-6000, 0.1M MES pH 6.0, 1M LiCl, VAPOR DIFFUSION,SITTING DROP,NANODROP, temperature 277K
2	VAPOR DIFFUSION,SITTING DROP,NANODROP	6.6	277	crystal 2: 0.2M ammonium formate, 20% PEG-3350, pH 6.6, VAPOR DIFFUSION,SITTING DROP,NANODROP, temperature 277K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 45.169	α = 90
b = 45.169	β = 90
c = 177.196	γ = 90

Symmetry
Space Group	P 41 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	CCD	ADSC QUANTUM 315	flat mirror	2001-06-03	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	ADSC QUANTUM 315	flat mirror	2002-12-12	M	MAD
1,2	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-1		SSRL	BL9-1
2	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.97932, 0.90497	SSRL	BL11-1

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
1,2	1.83	31.63	99	0.072	10.5	3.2	16963	16963			32.45

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)
1,2	1.83	1.88	90.6		0.62	1.7	3.1	1130

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	MAD	THROUGHOUT	1.87	31.43	15161	813	99.41	0.19435	0.19113	0.25495	RANDOM	32.331

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]
-0.17			-0.17		0.34

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.217
r_dihedral_angle_3_deg	13.825
r_dihedral_angle_4_deg	8.069
r_dihedral_angle_1_deg	5.331
r_scangle_it	3.409
r_scbond_it	2.123
r_angle_refined_deg	1.549
r_mcangle_it	1.372
r_angle_other_deg	0.882
r_mcbond_it	0.799
r_symmetry_vdw_other	0.253
r_nbd_other	0.233
r_xyhbond_nbd_refined	0.222
r_nbd_refined	0.208
r_symmetry_hbond_refined	0.115
r_symmetry_vdw_refined	0.106
r_chiral_restr	0.1
r_nbtor_other	0.085
r_bond_refined_d	0.018
r_gen_planes_refined	0.006
r_bond_other_d	0.002
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1124
Nucleic Acid Atoms
Solvent Atoms	214
Heterogen Atoms

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
SOLVE	phasing
RESOLVE	model building
REFMAC	refinement
CCP4	data scaling
RESOLVE	phasing