1ZH4

Crystal Structure Of The Mg+2/BeF3-Bound Receiver Domain Of Kdp Potassium Transport System Response Regulator KdpE

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	293	PEG 8000, Magnesium Chloride, MES Buffer, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.6	52.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 70.912	α = 90
b = 126.675	β = 90
c = 62.655	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		2004-11-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X4A	1.07179	NSLS	X4A

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	30	96.8	0.048	30.1	5.4	15063	14572		-3	26.4

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)
	2.2	2.28	88.9		0.213	7.8	4.9	1316

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1ZH3 (Ala Model)	2.2	30	15170	13343	706	95.68	0.22851	0.22651	0.26507	RANDOM	45.01

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]
-2.73			-1.35		4.08

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.82
r_mcangle_it	2.53
r_scangle_it	2.515
r_angle_refined_deg	1.653
r_scbond_it	1.602
r_mcbond_it	1.501
r_symmetry_vdw_refined	0.266
r_nbd_refined	0.257
r_symmetry_hbond_refined	0.231
r_xyhbond_nbd_refined	0.223

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.82
r_mcangle_it	2.53
r_scangle_it	2.515
r_angle_refined_deg	1.653
r_scbond_it	1.602
r_mcbond_it	1.501
r_symmetry_vdw_refined	0.266
r_nbd_refined	0.257
r_symmetry_hbond_refined	0.231
r_xyhbond_nbd_refined	0.223
r_chiral_restr	0.11
r_metal_ion_refined	0.046
r_bond_refined_d	0.017
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1866
Nucleic Acid Atoms
Solvent Atoms	107
Heterogen Atoms	10

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.