3OOV | pdb_00003oov

Crystal structure of a methyl-accepting chemotaxis protein, residues 122 to 287

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.2	289	10% w/v PEG 3000, 0.10M phosphate-citrate, pH4.2, 0.20M NaCl. (Wizard II, #36) cryoprotectant: included all of above, in addition to 25% glycerol, VAPOR DIFFUSION, SITTING DROP, temperature 289K

Crystal Properties
Matthews coefficient	Solvent content
2.54	51.61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 60.132	α = 90
b = 60.132	β = 90
c = 363.131	γ = 120

Symmetry
Space Group	P 61 2 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 315r		2009-11-09	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	0.97911	APS	19-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	60.52	99.4		4.1	21188			3

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	2.2	60.52	21188	19859	1073	99.24	0.24022	0.24022	0.23681	0.2389	0.30485	0.3034	RANDOM	28.315

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]
1.15	0.58		1.15		-1.73

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.41
r_dihedral_angle_4_deg	21.01
r_dihedral_angle_3_deg	17.781
r_dihedral_angle_1_deg	6.697
r_scangle_it	5.308
r_scbond_it	3.596
r_mcangle_it	2.128
r_angle_refined_deg	1.957
r_mcbond_it	1.179
r_chiral_restr	0.135
r_bond_refined_d	0.023
r_gen_planes_refined	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2505
Nucleic Acid Atoms
Solvent Atoms	145
Heterogen Atoms	24

Software

Software
Software Name	Purpose
SBC-Collect	data collection
HKL-3000	phasing
REFMAC	refinement
HKL-3000	data reduction
HKL-3000	data scaling