6TJA | pdb_00006tja

Crystal structure of the SVS_A2 protein (W79F,G83L mutant) from ancestral sequence reconstruction at 2.27 A resolution

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4OKZ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.2	293	0.2M Na phosphate 0.1M Bis-Tris-Propane pH 7.2 12% PEG 3350 Cryoprotection: 0.2M Na phosphate 0.1M Bis-Tris-Propane pH 7.2 20% PEG 3350 5mM MgCl2 FPP

Crystal Properties
Matthews coefficient	Solvent content
2.62	53.05

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 74.754	α = 90
b = 104.928	β = 90
c = 108.694	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	100	PIXEL	DECTRIS EIGER X 16M	KB mirrors	2019-06-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MAX IV BEAMLINE BioMAX	0.91841	MAX IV	BioMAX

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	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	2.27	29.43	99.8	0.1	0.05	0.976	9.7	5.6		40139			30

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.27	2.34	99.6		0.528	0.264	0.853	2.7

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	4OKZ	2.27	29.43	38033	2013	99.59	0.1844	0.1824	0.1904	0.22	0.2256	RANDOM	35.637

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]
1.95			-0.51		-1.43

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.206
r_dihedral_angle_4_deg	19.667
r_dihedral_angle_3_deg	15.053
r_dihedral_angle_1_deg	5.949
r_angle_refined_deg	1.627
r_angle_other_deg	1.365
r_chiral_restr	0.081
r_bond_refined_d	0.01
r_gen_planes_refined	0.008
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5121
Nucleic Acid Atoms
Solvent Atoms	218
Heterogen Atoms	21

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
Aimless	data scaling
MOLREP	phasing