5KR5

Directed Evolution of Transaminases By Ancestral Reconstruction. Using Old Proteins for New Chemistries

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293	150 plus 150 nL drops with protein at 4 mg/mL and reservoir conditions of 15% PEG 8000, 11 mM calcium acetate, 100 mM Tris pH 7.1. Microcrystals were used as nucleating agents to obtain full size crystals.

Crystal Properties
Matthews coefficient	Solvent content
2.42	49.22

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 98.451	α = 90
b = 102.538	β = 90
c = 199.781	γ = 90

Symmetry
Space Group	C 2 2 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	CCD	ADSC QUANTUM 315r		2014-03-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	AUSTRALIAN SYNCHROTRON BEAMLINE MX2	0.95370	Australian Synchrotron	MX2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	2.1	48.6	99.6	0.17	0.994	9.5	7.3		59261

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.1	2.15	97.6		0.899	0.67	2.2	7.3

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	5kqt	2.1	48.6	56252	2892	99.36	0.20597	0.20425	0.23987	RANDOM	29.309

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			1.09		-0.09

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.709
r_dihedral_angle_4_deg	14.233
r_dihedral_angle_3_deg	13.351
r_dihedral_angle_1_deg	7.245
r_long_range_B_refined	5.241
r_long_range_B_other	5.241
r_scangle_other	2.489
r_mcangle_it	2.176
r_mcangle_other	2.176
r_scbond_it	1.52
r_scbond_other	1.52
r_angle_refined_deg	1.424
r_mcbond_it	1.343
r_mcbond_other	1.34
r_angle_other_deg	0.953
r_chiral_restr	0.082
r_bond_refined_d	0.009
r_gen_planes_refined	0.006
r_bond_other_d	0.002
r_gen_planes_other	0.002
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6957
Nucleic Acid Atoms
Solvent Atoms	358
Heterogen Atoms	54

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing