1M9N

CRYSTAL STRUCTURE OF THE HOMODIMERIC BIFUNCTIONAL TRANSFORMYLASE AND CYCLOHYDROLASE ENZYME AVIAN ATIC IN COMPLEX WITH AICAR AND XMP AT 1.93 ANGSTROMS.

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1G8M	PDB entry 1G8M

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.2	295	PEG 8000, imidazole, DTT, pH 7.2, VAPOR DIFFUSION, SITTING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.37	48.16

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 56.48	α = 90
b = 107.88	β = 91.2
c = 103.86	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	CCD	ADSC QUANTUM 4	bent conical Si-mirror (Rh coating); bent cylindrical Ge(111) monochromator	1999-09-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 14-BM-C	1.0	APS	14-BM-C

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.93	30	98.2	0.044	25.3	3.9	92862	91184		-3	33.5

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	1.93	1.96	99.6		0.419	2.4	3.4	4619

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 1G8M	1.93	29.24	91184	74522	8292	90.84	0.20955	0.20955	0.2057	0.24397	RANDOM	12.949

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]
4.67		-0.56	-1.02		-3.67

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	17.011
r_dihedral_angle_1_deg	3.619
r_scangle_it	2.492
r_scbond_it	1.563
r_angle_refined_deg	1.285
r_mcangle_it	0.913
r_mcbond_it	0.519
r_symmetry_hbond_refined	0.262
r_nbd_refined	0.234
r_symmetry_vdw_refined	0.196

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	17.011
r_dihedral_angle_1_deg	3.619
r_scangle_it	2.492
r_scbond_it	1.563
r_angle_refined_deg	1.285
r_mcangle_it	0.913
r_mcbond_it	0.519
r_symmetry_hbond_refined	0.262
r_nbd_refined	0.234
r_symmetry_vdw_refined	0.196
r_xyhbond_nbd_refined	0.188
r_metal_ion_refined	0.121
r_chiral_restr	0.092
r_bond_refined_d	0.009
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9020
Nucleic Acid Atoms
Solvent Atoms	511
Heterogen Atoms	94

Software

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

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.