Experiment: 1VFN

PURINE NUCLEOSIDE PHOSPHORYLASE

X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8		16%(W/V) PEG 4000, 0.04M TRIS-HCL BUFFER PH 8.2-8.5, 0.08M MGCL2, pH 8.0

Crystal Properties
Matthews coefficient	Solvent content
2.22	43

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 94.11	α = 90
b = 94.11	β = 90
c = 94.11	γ = 90

Symmetry
Space Group	P 21 3

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	277	IMAGE PLATE	MARRESEARCH		1996-03-18	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X31		EMBL/DESY, HAMBURG	X31

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	2.15	20	98.4	0.074	10.6	3.27		15158		1

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	2.1	2.2	97.6		0.212	6

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-Work (Depositor)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 1ULB	2.15	20	1	15158		98.4	0.18

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
t_dihedral_angle_d	26.1
t_it	3.858
t_angle_deg	2.8
t_nbd	0.026
t_bond_d	0.02
t_gen_planes	0.011
t_trig_c_planes	0.005
t_incorr_chiral_ct
t_pseud_angle

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2102
Nucleic Acid Atoms
Solvent Atoms	129
Heterogen Atoms	12

Software

Software
Software Name	Purpose
AMoRE	phasing
TNT	refinement
DENZO	data reduction
SCALEPACK	data scaling