6RLU

Trypanosoma brucei Seryl-tRNA Synthetase in Complex with 5'-O-(N-(L-seryl)-sulfamoyl)cytidine

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3LSQ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	293	Holo protein at 10 mg/mL in 10 mM Tris pH 7, 100 mM NaCl, 5 mM DTT, 5% (v/v) glycerol was mixed with 2.4 M sodium malonate pH 7.0, 100 mM Bis-tris propane pH 7.0 in a 2:1 (v/v) ratio. Suitable crystals were soaked with 2 mM 5'-O-(N-(L-seryl)-sulfamoyl)cytidine in t crystallization solution containing a 22% v/v glycerol.

Crystal Properties
Matthews coefficient	Solvent content
3.56	65.45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 178.357	α = 90
b = 178.357	β = 90
c = 246.688	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	IMAGE PLATE	MAR scanner 345 mm plate	mirrors	2018-04-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.541790

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	1.88	96.38	100	0.109	0.115	0.035	0.999	15.5	10.9		121071			25.99

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	1.88	1.99	100		0.722	0.758	0.229	0.894		10.8

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	3LSQ	1.88	27.57	121020	2321	100	0.169	0.169	0.195	RANDOM	30.33

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]
-1.7158			-1.7158		3.4315

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	14.7
t_omega_torsion	3.87
t_angle_deg	0.98
t_bond_d	0.011
t_dihedral_angle_d
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	14.7
t_omega_torsion	3.87
t_angle_deg	0.98
t_bond_d	0.011
t_dihedral_angle_d
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion
t_pseud_angle
t_chiral_improper_torsion
t_sum_occupancies
t_utility_distance
t_utility_angle
t_utility_torsion
t_ideal_dist_contact

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7099
Nucleic Acid Atoms
Solvent Atoms	776
Heterogen Atoms	121

Software

Software
Software Name	Purpose
BUSTER	refinement
XDS	data reduction
Aimless	data scaling
PDB_EXTRACT	data extraction
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.