Experiment: 4XBQ

Crystal Structure of Human Galectin-7 in Complex with Type 1 N-acetyllactosamine

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1BKZ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	298	0.1M Hepes pH 7.5, 0.2M Lithium Sulfate, 0.1M Sodium Acetate, 25% (w/v) PEG 4000, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
1.66	25.89

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 30.085	α = 90
b = 55.411	β = 90
c = 136.497	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	100	CCD	ADSC QUANTUM 315r		2012-06-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSRRC BEAMLINE BL13C1	1.0	NSRRC	BL13C1

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	2.2336	30	98.7	0.05	0.05	14.59	4.8		11562

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	2.2336	2.3134	96.5		0.277	6.21	4.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	1BKZ	2.234	22.86	1.35	11554	545	98.6	0.197	0.1956	0.2021	0.2245	0.2319

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
f_dihedral_angle_d	14.127
f_angle_d	0.811
f_chiral_restr	0.032
f_plane_restr	0.005
f_bond_d	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2088
Nucleic Acid Atoms
Solvent Atoms	63
Heterogen Atoms	52

Software

Software
Software Name	Purpose
HKL-2000	data collection
HKL-2000	data processing
SCALEPACK	data scaling
PHASER	phasing
PHENIX	model building
PHENIX	refinement
PDB_EXTRACT	data extraction