5GAL

CRYSTAL STRUCTURE OF HUMAN GALECTIN-7 IN COMPLEX WITH N-ACETYLLACTOSAMINE

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		native Gal-7 at 1.9 A resolution as a search model.

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.1		CRYSTALS WERE GROWN USING THE HANGING DROP METHOD FROM DROPS CONTAINING 9 MG/ML PROTEIN AT PH 8.1 IN 50 MM SODIUM PHOSPHATE BUFFER, 0.3 M SODIUM CHLORIDE, 20 MM IMIDAZOLE, 8.5% PEG 3350. DROPS WERE EQUILIBRATED AGAINST RESERVOIRS CONTAINING 50 MM SODIUM PHOSPHATE BUFFER, 0.3 M SODIUM CHLORIDE, 20 MM IMIDAZOLE, 17% PEG 3350. GALECTIN-7 CRYSTALS WERE THEN SOAKED WITH 50 MM N-ACETYLLACTOSAMINE FOR 3 DAYS., vapor diffusion - hanging drop

Crystal Properties
Matthews coefficient	Solvent content
2.2	43

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 54.23	α = 90
b = 65.18	β = 90
c = 73.39	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	289	IMAGE PLATE	MARRESEARCH	MIRRORS	1997-08-25	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE BW7B		EMBL/DESY, HAMBURG	BW7B

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	1.9	40	99.4	0.063	7.6	5.1		21098		-3	17.4

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.9	2	98.3		0.584	3.1	4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	FREE GALECTIN-7	2	20	18066	894	99.6	0.213	0.213	0.296	RANDOM	36

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
x_dihedral_angle_d	30
x_scangle_it	4.94
x_scbond_it	3.16
x_mcangle_it	3.07
x_mcbond_it	1.88
x_angle_deg	1.6
x_improper_angle_d	0.79
x_bond_d	0.009
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2095
Nucleic Acid Atoms
Solvent Atoms	81
Heterogen Atoms	26

Software

Software
Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing