2FPS

Crystal structure of the N-terminal domain of E.coli HisB- Apo Ca model.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	EVAPORATION	6.5	293	30% (w/v) PEG monomethyl ether 550, 0.05M CaCl2, 0.1M Bis-Tris., pH 6.5, EVAPORATION, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.41	48.89

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.748	α = 90
b = 131.325	β = 90
c = 104.898	γ = 90

Symmetry
Space Group	C 2 2 21

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	Mirrors	2005-06-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X8C	1.7	NSLS	X8C

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	2.2	50	95.2	0.029	39.8	3.4	17942	17045

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	2.2	2.28	69.4		0.049	19.6	2.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	FOURIER SYNTHESIS	THROUGHOUT	PDB Entry 2FPR	2.2	50	17942	17045	897	94.81	0.173	0.17344	0.1697	0.24399	RANDOM	23.493

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]
-0.78			-0.99		1.76

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.326
r_dihedral_angle_4_deg	20.164
r_dihedral_angle_3_deg	13.379
r_dihedral_angle_1_deg	6.607
r_scangle_it	3.567
r_scbond_it	2.303
r_angle_refined_deg	1.533
r_mcangle_it	1.416
r_mcbond_it	0.826
r_nbtor_refined	0.312
r_symmetry_hbond_refined	0.273
r_nbd_refined	0.205
r_symmetry_vdw_refined	0.198
r_xyhbond_nbd_refined	0.161
r_metal_ion_refined	0.12
r_chiral_restr	0.11
r_bond_refined_d	0.015
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2568
Nucleic Acid Atoms
Solvent Atoms	315
Heterogen Atoms	6

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling