1G8Z

HIS57ALA MUTANT OF CHOLERA TOXIN B-PENATMER

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.4	298	PEG 5000, NaCl, Tris HCl, galactose, pH 8.4, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.29	46.36

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 101.362	α = 90
b = 114.722	β = 90
c = 45.591	γ = 90

Symmetry
Space Group	P 21 21 2

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	CUSTOM-MADE		1999-12-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	1.0332	APS	19-ID

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	22	99.7	0.061	37	6.9	36777	36777			15.5

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)
	2	2.07	99.3		0.16		6	3632

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	2	20	36607	34780	1827		0.179	0.239	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]

RMS Deviations
Key	Refinement Restraint Deviation
p_orthonormal_tor	30.458
p_staggered_tor	14.898
p_scangle_it	5.288
p_planar_tor	3.96
p_mcangle_it	3.891
p_scbond_it	3.833
p_mcbond_it	2.962
p_multtor_nbd	0.246
p_singtor_nbd	0.176
p_xyhbond_nbd	0.136
p_chiral_restr	0.111
p_planar_d	0.032
p_angle_d	0.03
p_bond_d	0.011
p_plane_restr	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4045
Nucleic Acid Atoms
Solvent Atoms	446
Heterogen Atoms	48

Software

Software
Software Name	Purpose
REFMAC	refinement
d*TREK	data reduction
HKL-2000	data scaling
AMoRE	phasing