Experiment: 4UEX

Structure of human Saposin A at lysosomal pH

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2DOB	PDB ENTRY 2DOB

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.8		SITTING-DROP VAPOUR DIFFUSION: 400 NL DROP (200 NL PROTEIN AT 19.6 MG/ML IN 150 MM NACL, 50 MM TRIS PH 7.4 MIXED WITH 200 NL RESERVOIR SOLUTION) WAS EQUILIBRATED AGAINST A 80 UL RESERVOIR OF 0.2 M LITHIUM SULPHATE, 0.1 M SODIUM ACETATE PH 4.8 AND 25% W/V POLYETHYLENE GLYCOL 4000

Crystal Properties
Matthews coefficient	Solvent content
1.84	33.2

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 34.17	α = 90
b = 58.69	β = 93.1
c = 35.16	γ = 90

Symmetry
Space Group	P 1 21 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	PIXEL	DECTRIS PILATUS 6M	KIRKPATRICK BAEZ BIMORPH MIRROR PAIR FOR HORIZONTAL AND VERTICAL FOCUSSING	2011-06-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I03		Diamond	I03

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	1.8	34.12	98.8	0.1	11.2	6.8		12753		-3

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	1.8	1.86	97.7		1	1.8	6.8

Refinement

Statistics
Diffraction ID	Structure Solution 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	PDB ENTRY 2DOB	1.8	34.12	1.36	12737	612	98.58	0.1864	0.1852	0.1905	0.2098	0.2094

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	13.314
f_angle_d	0.807
f_chiral_restr	0.032
f_bond_d	0.004
f_plane_restr	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1212
Nucleic Acid Atoms
Solvent Atoms	26
Heterogen Atoms

Software

Software
Software Name	Purpose
PHENIX	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing