4H3O

Crystal structure of a new form of lectin from Allium sativum at 2.17 A resolution

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	1M cadmium sulfate hydrate, 0.1M HEPES, 1.0M sodium chloride , pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.15	42.84

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 35.513	α = 90
b = 57.234	β = 90
c = 97.449	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	77	CCD	MARRESEARCH	mirror	2012-05-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM14	0.97	ESRF	BM14

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	2.17	49.35	99.6	0.067	6.4		10285	10285

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	2.17	2.21	98.7		0.134	2.4

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1KJ1	2.17	49.35	10285	10285	516	98.12	0.20563	0.20437	0.20252	0.2392	RANDOM	21.725

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]
0.01			-0.29		0.28

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.182
r_dihedral_angle_3_deg	14.379
r_dihedral_angle_4_deg	10.394
r_dihedral_angle_1_deg	7.062
r_scangle_it	1.313
r_angle_refined_deg	1.091
r_scbond_it	0.807
r_mcangle_it	0.723
r_mcbond_it	0.378
r_chiral_restr	0.088

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.182
r_dihedral_angle_3_deg	14.379
r_dihedral_angle_4_deg	10.394
r_dihedral_angle_1_deg	7.062
r_scangle_it	1.313
r_angle_refined_deg	1.091
r_scbond_it	0.807
r_mcangle_it	0.723
r_mcbond_it	0.378
r_chiral_restr	0.088
r_bond_refined_d	0.007
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1620
Nucleic Acid Atoms
Solvent Atoms	195
Heterogen Atoms	8

Software

Software
Software Name	Purpose
HKL-2000	data collection
AMoRE	phasing
REFMAC	refinement
DENZO	data reduction
SCALEPACK	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 R01GM133198.