1EHC

STRUCTURE OF SIGNAL TRANSDUCTION PROTEIN CHEY

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8.3		pH 8.3

Crystal Properties
Matthews coefficient	Solvent content
2.08	40.9

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 45.85	α = 90
b = 47.03	β = 90
c = 54.04	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	290	AREA DETECTOR	SIEMENS			M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU

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	2.26		87.8	0.0602				5108

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.26	2.37	24.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	PHASED WITH WT	MODIFIED WILD-TYPE CHEY	2.26	10	2	4432		76.2	0.143		15.6

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]

RMS Deviations
Key	Refinement Restraint Deviation
p_staggered_tor	20.5
p_transverse_tor	17.6
p_planar_tor	1.8
p_scangle_it	1.614
p_mcangle_it	1.431
p_scbond_it	0.916
p_mcbond_it	0.823
p_xyhbond_nbd	0.287
p_multtor_nbd	0.238
p_singtor_nbd	0.201
p_chiral_restr	0.153
p_planar_d	0.057
p_angle_d	0.051
p_bond_d	0.016
p_plane_restr	0.01
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	980
Nucleic Acid Atoms
Solvent Atoms	100
Heterogen Atoms	5

Software

Software
Software Name	Purpose
PROFFT	refinement
XENGEN	data reduction
XENGEN	data scaling