7B4Q

Structure of a cold active HSL family esterase reveals mechanisms of low temperature adaptation and substrate specificity

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5	293	0.2M lithium chloride, 0.1M sodium acetate, 20% (w/v) PEG 6000, pH 5.0

Crystal Properties
Matthews coefficient	Solvent content
2.74	55.03

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 109.883	α = 90
b = 109.883	β = 90
c = 126.772	γ = 90

Symmetry
Space Group	P 43 21 2

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 PILATUS3 2M		2019-04-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I04-1	0.97629	Diamond	I04-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	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	1.61	83.04	100	0.106	0.11	0.029	0.999	13.8	14.5		100631

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.61	1.65	100		2.26	2.349	0.634	0.672		13.7

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	1LZK	1.61	83.03	95500	5029	99.94	0.1683	0.1671	0.1932	RANDOM	30.793

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]
-0.12			-0.12		0.25

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.458
r_dihedral_angle_4_deg	21.398
r_dihedral_angle_3_deg	13.1
r_dihedral_angle_1_deg	6.611
r_angle_refined_deg	1.766
r_angle_other_deg	1.513
r_chiral_restr	0.095
r_bond_refined_d	0.013
r_gen_planes_refined	0.011
r_bond_other_d	0.001

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.458
r_dihedral_angle_4_deg	21.398
r_dihedral_angle_3_deg	13.1
r_dihedral_angle_1_deg	6.611
r_angle_refined_deg	1.766
r_angle_other_deg	1.513
r_chiral_restr	0.095
r_bond_refined_d	0.013
r_gen_planes_refined	0.011
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4886
Nucleic Acid Atoms
Solvent Atoms	584
Heterogen Atoms	30

Software

Software
Software Name	Purpose
REFMAC	refinement
Aimless	data scaling
PDB_EXTRACT	data extraction
XDS	data reduction
PHASER	phasing
xia2	data reduction

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 R01GM133198.