Experiment: 3E8Q

X-ray structure of rat arginase I-T135A: the unliganded complex

X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP			drops containing 3 microL of protein solution [5 mg/mL protein, 50 mM bicine (pH 8.5), 2 mM BEC, 2 mM MnCl2] and 3 microL of precipitant solution [0.1 M CHES (pH 9.5), 20% PEG 3350, 0.2 M NaCl] were equilibrated over a 1 mL reservoir of precipitant solution, VAPOR DIFFUSION, HANGING DROP

Crystal Properties
Matthews coefficient	Solvent content
2.12	41.92

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 87.398	α = 90
b = 87.398	β = 90
c = 100.818	γ = 120

Symmetry
Space Group	P 32

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 210			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE A1	1.0	CHESS	A1

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	2.9	50	96.3	0.136	9.3	2.9	18754	18754			15.4

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)
	2.9	3	90.5		0.33	2.7	2.7	1644

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	1RLA	2.9	25.13	18729	864	98.4	0.263	0.263	0.2645	0.296	0.262	RANDOM	38.3

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]
-16.68			-16.68		33.35

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23
c_angle_deg	1.4
c_improper_angle_d	0.91
c_bond_d	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7026
Nucleic Acid Atoms
Solvent Atoms	46
Heterogen Atoms	6

Software

Software
Software Name	Purpose
CNS	refinement
ADSC	data collection