2PMC

Crystal Structure of CheY-Mg(2+) in Complex with CheZ(C15) Peptide solved from a P1 Crystal

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	298	37.5 % PEG 8000, 0.1 M ammonium thiocyanate, 0.1 M MES, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K

Crystal Properties
Matthews coefficient	Solvent content
2.01	38.9

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 34.76	α = 90.22
b = 53.672	β = 102.92
c = 65.641	γ = 90.18

Symmetry
Space Group	P 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 4		2006-03-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X4A	0.97931	NSLS	X4A

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	2.688	30	98.8	0.061	12.1	3.9	12741	12578		-3

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	2.688	2.8	98.4		0.508		3.9	1259

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2.688	28.59	12578	12578	1246	98	0.213	0.213	0.205	0.285	RANDOM	33.641

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]
0.01	-0.07	-0.03	0.2	-0.03	-0.23

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.472
r_dihedral_angle_3_deg	17.617
r_dihedral_angle_4_deg	14.088
r_dihedral_angle_1_deg	5.349
r_scangle_it	1.511
r_angle_refined_deg	1.033
r_scbond_it	1.029
r_mcangle_it	0.591
r_mcbond_it	0.332
r_nbtor_refined	0.306
r_symmetry_hbond_refined	0.236
r_nbd_refined	0.215
r_symmetry_vdw_refined	0.191
r_xyhbond_nbd_refined	0.142
r_metal_ion_refined	0.098
r_chiral_restr	0.068
r_bond_refined_d	0.012
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4048
Nucleic Acid Atoms
Solvent Atoms	16
Heterogen Atoms	2

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
DM	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection