Experiment: 2AUT

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1Z5G	Partially refined structure of wild-type APHA (PDB code 1Z5G) with all HET atoms (HOH, MG etc.) removed and side chain of Lys154 replaced with ALA was used as the starting model. A random error of 0.2A was added to the atomic coordinates of the starting model.

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	vapour diffusion sitting-drop, micro-seeding	4.7	293	PEG 6000, magnesium chloride, sodium acetate, dihydrogen phosphate , pH 4.7, vapour diffusion sitting-drop, micro-seeding, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.34	47.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 70.737	α = 90
b = 84.477	β = 90
c = 149.268	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	293	IMAGE PLATE	MARRESEARCH	OSMIC mirror	2004-01-31	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200	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	2.24	30	94.5	0.055	13.5	3.4	40809	40671			24.77

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)
	2.24	2.36	91.4		0.162	7.1	3.2	5241

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-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	FOURIER SYNTHESIS	THROUGHOUT	Partially refined structure of wild-type APHA (PDB code 1Z5G) with all HET atoms (HOH, MG etc.) removed and side chain of Lys154 replaced with ALA was used as the starting model. A random error of 0.2A was added to the atomic coordinates of the starting model.	2.25	20	40554	40554	2004	94	0.151	0.197	random	24.29

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]
0.142			-4.802		4.659

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23.09
c_scangle_it	3.2
c_mcangle_it	2.22
c_scbond_it	2.17
c_mcbond_it	1.4
c_angle_deg	1
c_improper_angle_d	0.833
c_bond_d	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6589
Nucleic Acid Atoms
Solvent Atoms	534
Heterogen Atoms	10

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
CNS	refinement
CCP4	data scaling
TRUNCATE	data scaling
CNS	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.