5KR4

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 10 mg/mL and reservoir conditions of 12% PEG 8000, 15% glycerol, 150 mM MgCl2, 100 mM Tris pH 7.1. Microseeds were used for nucleation of the crystals.

Crystal Properties
Matthews coefficient	Solvent content
2.47	50.2

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 67.053	α = 90
b = 121.783	β = 90
c = 125.629	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	CCD	ADSC QUANTUM 315r		2014-02-18	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	45.8	99.8	0.156	0.993	10.4	7.3		70329

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	2.04	97.1		0.726	0.756	2.4	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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	5kqt	2	45.8	66296	3542	99.16	0.19381	0.19222	0.22415	RANDOM	21.126

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]
-0.02			-1.26		1.28

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.161
r_dihedral_angle_4_deg	15.258
r_dihedral_angle_3_deg	13.551
r_dihedral_angle_1_deg	6.109
r_long_range_B_refined	4.641
r_long_range_B_other	4.641
r_scangle_other	3.208
r_scbond_it	2.057
r_scbond_other	2.057
r_mcangle_it	1.96
r_mcangle_other	1.96
r_angle_refined_deg	1.565
r_mcbond_it	1.318
r_mcbond_other	1.318
r_angle_other_deg	0.979
r_chiral_restr	0.093
r_bond_refined_d	0.013
r_gen_planes_refined	0.007
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	6974
Nucleic Acid Atoms
Solvent Atoms	447
Heterogen Atoms	42

Software

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