Experiment: 2AST

X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	277	PEG8K, 5% benzamidine, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
4.9	75

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 148.7	α = 90
b = 148.7	β = 90
c = 98.8	γ = 120

Symmetry
Space Group	P 32 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	173	IMAGE PLATE	RIGAKU	mirrors	2005-08-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-C	0.97946	APS	24-ID-C

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	2.3	20	99.9	0.056	0.056	35	6.5	55849	55849	2	2

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	2.3	2.38	100		0.422	0.422	4	6	5513

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 1FQV	2.3	20	52996	52996	2826	99.91	0.2028	0.2028	0.20178	0.22109	RANDOM	57.844

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]
-0.49	-0.25		-0.49		0.74

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.743
r_dihedral_angle_4_deg	19.929
r_dihedral_angle_3_deg	14.907
r_dihedral_angle_1_deg	5.151
r_scangle_it	4.186
r_mcangle_it	3.12
r_scbond_it	2.76
r_mcbond_it	2.008
r_angle_refined_deg	1.085
r_nbtor_refined	0.298

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.743
r_dihedral_angle_4_deg	19.929
r_dihedral_angle_3_deg	14.907
r_dihedral_angle_1_deg	5.151
r_scangle_it	4.186
r_mcangle_it	3.12
r_scbond_it	2.76
r_mcbond_it	2.008
r_angle_refined_deg	1.085
r_nbtor_refined	0.298
r_symmetry_vdw_refined	0.195
r_nbd_refined	0.189
r_symmetry_hbond_refined	0.153
r_xyhbond_nbd_refined	0.135
r_chiral_restr	0.072
r_bond_refined_d	0.007
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4377
Nucleic Acid Atoms
Solvent Atoms	265
Heterogen Atoms	18

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
AMoRE	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.