3G0T

Crystal structure of putative aspartate aminotransferase (NP_905498.1) from Porphyromonas gingivalis W83 at 1.75 A resolution

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.1	277	NANODROP, 0.20M NaF, 20.0% PEG 3350, No Buffer pH 7.1, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.44	49.58

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 220.44	α = 90
b = 54.97	β = 90
c = 81.154	γ = 90

Symmetry
Space Group	P 21 21 2

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	MARMOSAIC 300 mm CCD	Adjustable focusing mirrors in K-B geometry	2008-10-12	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-B	0.94645, 0.97967	APS	23-ID-B

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	1.75	34.401	96.6	0.097	0.097	5.515	6.5		96949

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.75	1.8	73.9		0.396	0.396	1.7	1.9	5324

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.75	34.401	96109	4788	95.59	0.139	0.137	0.171	RANDOM	16.524

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]
0.48			0.53		-1.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.073
r_dihedral_angle_4_deg	16.406
r_dihedral_angle_3_deg	11.293
r_scangle_it	4.963
r_dihedral_angle_1_deg	4.563
r_scbond_it	3.491
r_mcangle_it	2.008
r_angle_refined_deg	1.647
r_mcbond_it	1.19
r_angle_other_deg	0.971

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.073
r_dihedral_angle_4_deg	16.406
r_dihedral_angle_3_deg	11.293
r_scangle_it	4.963
r_dihedral_angle_1_deg	4.563
r_scbond_it	3.491
r_mcangle_it	2.008
r_angle_refined_deg	1.647
r_mcbond_it	1.19
r_angle_other_deg	0.971
r_mcbond_other	0.285
r_chiral_restr	0.109
r_bond_refined_d	0.017
r_gen_planes_refined	0.007
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6902
Nucleic Acid Atoms
Solvent Atoms	1127
Heterogen Atoms	97

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
SHELX	phasing
MolProbity	model building
SCALA	data scaling
PDB_EXTRACT	data extraction
MAR345	data collection
MOSFLM	data reduction
SHELXD	phasing
autoSHARP	phasing

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.