Experiment: 4O7W

SAICAR synthetase (Type-2) in complex with ATP and TDP

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3U55	PDB ENTRY 3U55

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	Microbatch Underoil	4.6	293	0.2M Ammonium Sulphate, 0.1M Sodium acetate trihydrate, 30% w/v PEG monomethyl ether 2000, pH 4.6, Microbatch Underoil, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.43	49.47

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 44.15	α = 90
b = 154.53	β = 90
c = 78.43	γ = 90

Symmetry
Space Group	C 2 2 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	IMAGE PLATE	MAR scanner 345 mm plate	Mirrors	2012-11-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	BRUKER AXS MICROSTAR	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	55.04	99.1	0.045	25	4.4		13902			24.6

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	2.2	2.32	98		0.17	9	4.4	8512

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 3U55	2.2	55.04	13895	724	98.81	0.193	0.1904	0.19	0.2399	0.2407	RANDOM	24.435

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]
0.13			0.14		-0.27

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.574
r_dihedral_angle_4_deg	16.105
r_dihedral_angle_3_deg	14.626
r_dihedral_angle_1_deg	5.42
r_angle_refined_deg	1.424
r_chiral_restr	0.076
r_bond_refined_d	0.008
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1836
Nucleic Acid Atoms
Solvent Atoms	93
Heterogen Atoms	65

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
MAR345dtb	data collection