1VLZ

UNCOUPLED PHOSPHORYLATION AND ACTIVATION IN BACTERIAL CHEMOTAXIS: THE 2.1 ANGSTROM STRUCTURE OF A THREONINE TO ISOLEUCINE MUTANT AT POSITION 87 OF CHEY

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.39	48.54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 54.04	α = 90
b = 72.47	β = 109.06
c = 36.15	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

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

Data Collection

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		2.05	10	2	13198			0.156			16.3

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_orthonormal_tor	27.6
p_staggered_tor	15.8
p_planar_tor	2.1
p_scangle_it	1.8
p_mcangle_it	1.513
p_scbond_it	1.044
p_mcbond_it	0.857
p_xhyhbond_nbd	0.227
p_multtor_nbd	0.194
p_singtor_nbd	0.188
p_chiral_restr	0.143
p_angle_d	0.048
p_bond_d	0.014
p_plane_restr	0.011
p_angle_deg
p_planar_d
p_hb_or_metal_coord
p_xyhbond_nbd
p_transverse_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1898
Nucleic Acid Atoms
Solvent Atoms	172
Heterogen Atoms

Software

Software
Software Name	Purpose
PROFFT	refinement
XENGEN	data reduction