1U07

Crystal Structure of the 92-residue C-term. part of TonB with significant structural changes compared to shorter fragments

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	291	100mM imidazole, 1.1M sodium citrate, 100mM NaCl, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
1.9	35

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 22.58	α = 90
b = 49.32	β = 97.99
c = 72.22	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	100	CCD	MARRESEARCH		2003-10-20	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06SA	0.95372	SLS	X06SA

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	1.08	10	99.8	0.072	12.68	6.54	65348	65348	-3	-3	15.994

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)
	1.08	1.1	78.5		0.519	1.51	1.73	2763

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Cut-off Sigma (F)	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	MAD	free R	1.13	10	-3	-3	55631	55631	2781	99.9	0.139	0.139	0.137	0.183	RANDOM

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]

Coordinate Error
Structure Solution Method	Refinement High Resolution	Refinement Low Resolution
15	1445.46	1605.46

RMS Deviations
Key	Refinement Restraint Deviation
s_approx_iso_adps	0.113
s_non_zero_chiral_vol	0.101
s_zero_chiral_vol	0.077
s_similar_adp_cmpnt	0.066
s_angle_d	0.037
s_anti_bump_dis_restr	0.027
s_from_restr_planes	0.0269
s_bond_d	0.014
s_rigid_bond_adp_cmpnt	0.005
s_similar_dist

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1464
Nucleic Acid Atoms
Solvent Atoms	198
Heterogen Atoms

Software

Software
Software Name	Purpose
MAR345	data collection
XDS	data reduction
SOLVE	phasing
SHELXL-97	refinement
XDS	data scaling

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 R01GM157729.