1G9F

CRYSTAL STRUCTURE OF THE SOYBEAN AGGLUTININ IN A COMPLEX WITH A BIANTENNARY BLOOD GROUP ANTIGEN ANALOG

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		soybean agglutinin

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.2	293	protein,carbohydrate,HEPES,CaCl(2),MnCl(2),NaCl, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.08	60.1

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 122.64	α = 90
b = 122.64	β = 90
c = 90.56	γ = 90

Symmetry
Space Group	I 41 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	298	AREA DETECTOR	SIEMENS	COLLIMATOR	1997-01-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200	1.5418

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	2.2	20	80	0.128	12	2.9	72368	57894		5	21.7

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.25			3.7

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	soybean agglutinin	2.5	20	10942	10942	1125	89.4	0.19	0.19	0.19	0.23	RANDOM	23.8

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]
-0.86			-0.86		1.73

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	25.5
c_scangle_it	5.07
c_scbond_it	3.82
c_mcangle_it	3.35
c_mcbond_it	2.26
c_angle_deg	1.4
c_improper_angle_d	0.8
c_bond_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1793
Nucleic Acid Atoms
Solvent Atoms	9
Heterogen Atoms	92

Software

Software
Software Name	Purpose
X-PLOR	model building
CNS	refinement
X-GEN	data reduction
X-GEN	data scaling
X-PLOR	phasing

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.