8CCW

Crystal structure of human Sirt3 in complex with an acetylated HIV1 Tat-46-54 substrate peptide

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293.15	10 mg/ml human Sirt3-(118-399) in 20 mM Tris/HCl, pH 8.0, 150 mM NaCl, 5% (v/v) glycerol, 1 mM TCEP were incubated with 2 mM ac-Tat-46-54 for 60 min at 293.15 K. The complex was crystallized using the sitting-drop vapor-diffusion method at 293.15 K with 100 mM MES, pH 6.0, 30% (w/v) PEG 200, 5% (w/v) PEG 3000 as reservoir solution.

Crystal Properties
Matthews coefficient	Solvent content
2.99	58.93

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 78.721	α = 90
b = 127.76	β = 90
c = 77.576	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	PIXEL	DECTRIS PILATUS 6M		2018-07-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	BESSY BEAMLINE 14.1	0.9184	BESSY	14.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.65	39.36	99.89	0.999	13.93	11.2		47332			31.51

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.65	1.709	99.94		0.469	0.89	11.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	4FVT	1.65	39.36	1.33	47317	1090	99.79	0.1813	0.1807	0.2089	36.94

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	20.3968
f_angle_d	1.382
f_chiral_restr	0.0963
f_bond_d	0.0166
f_plane_restr	0.0096

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2233
Nucleic Acid Atoms
Solvent Atoms	287
Heterogen Atoms	1

Software

Software
Software Name	Purpose
XDS	data reduction
PHASER	phasing
Coot	model building
PHENIX	refinement
XDS	data scaling

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.