4RO3

1.8 Angstrom Crystal Structure of the N-terminal Domain of Protein with Unknown Function from Vibrio cholerae.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	295	Protein: 7.0 mg/ml, 0.3M Sodium chloride, 0.01M HEPES (pH 7.5), + Thermolysin; Screen: 0.2M Lithium sulfate, Bis-Tris 0.1M (pH 5.5), 25% (w/v) PEG 3350; Cryo: 5% Glycerol in screen solution, then Paraton, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.01	38.95

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 95.065	α = 90
b = 48.576	β = 96.72
c = 49.399	γ = 90

Symmetry
Space Group	C 1 2 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	MARMOSAIC 300 mm CCD	Beryllium lenses	2014-10-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-G	0.97856	APS	21-ID-G

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.8	30	100	0.07	0.07	40	7.5	21028	21028		-3	27.2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.8	1.83	100		0.577	0.577	3.6	7.5	1050

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	SAD	THROUGHOUT	1.8	30	19835	19835	1068	99.92	0.16238	0.16238	0.1606	0.19573	RANDOM	33.494

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]
0.28		0.04	0.07		-0.34

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	29.629
r_dihedral_angle_3_deg	11.509
r_long_range_B_refined	8.929
r_long_range_B_other	8.603
r_dihedral_angle_4_deg	7.879
r_scangle_other	4.013
r_mcangle_it	2.97
r_mcangle_other	2.97
r_dihedral_angle_1_deg	2.889
r_scbond_it	2.827
r_scbond_other	2.523
r_mcbond_it	1.905
r_mcbond_other	1.894
r_angle_refined_deg	1.406
r_angle_other_deg	0.716
r_chiral_restr	0.09
r_bond_refined_d	0.011
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1876
Nucleic Acid Atoms
Solvent Atoms	231
Heterogen Atoms	35

Software

Software
Software Name	Purpose
Blu-Ice	data collection
PHENIX	model building
REFMAC	refinement
HKL-3000	data reduction
HKL-3000	data scaling
PHENIX	phasing