9S27 | pdb_00009s27

Crystal structure of human SIRT3 in complex with the covalent adduct of peptide triazole inhibitor LTDi1 and ADP-ribose

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4BN4

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293	Crystals of the SIRT3-[LTDi1-ADPR] complex (10.0 mg/mL SIRT3, 15 mM NAD+, 3 mM of LTDi1 with 1.5 % (v/v) final DMSO concentration) formed after 2 days in wells with an equal volume of 300 nL protein solution and 300 nL reservoir solution containing 3 M NaCl in 0.1 M Tris at pH 8.5.

Crystal Properties
Matthews coefficient	Solvent content
2.84	56.73

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 97.102	α = 90
b = 97.102	β = 90
c = 203.673	γ = 120

Symmetry
Space Group	H 3 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 EIGER X 9M		2025-02-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-2	0.8731	ESRF	ID23-2

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	1.6	77.73	100	0.17	0.175	0.041	0.999	14.5	17.9		48997

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	1.6	1.63		100	3.074	3.165	0.75	0.295		17.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	1.6	77.73	1.35	48988	2444	99.98	0.1814	0.1807	0.1825	0.1938	0.196

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	12.233
f_angle_d	0.908
f_chiral_restr	0.057
f_plane_restr	0.009
f_bond_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2236
Nucleic Acid Atoms
Solvent Atoms	228
Heterogen Atoms	13

Software

Software
Software Name	Purpose
PHENIX	refinement
Aimless	data scaling
autoPROC	data reduction
PHASER	phasing

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 R01GM157729.