6ZPM

Crystal structure of the unconventional kinetochore protein Trypanosoma cruzi KKT4 coiled coil domain

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	291	HEPES, sodium chloride, MOPSO, Bis-Tris, DL-Arginine hydrochloride, DL- Threonine, DL-Histidine monohydrochloride monohydrate, DL-5-Hydroxylysine hydrochloride, trans-4-hydroxy-L-proline, PEG 8000, 1,5- Pentanediol, TCEP

Crystal Properties
Matthews coefficient	Solvent content
2.37	48.03

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 33.62	α = 90
b = 25.31	β = 96.81
c = 136.88	γ = 90

Symmetry
Space Group	P 1 21 1

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 EIGER2 XE 16M		2020-02-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I03	0.976	Diamond	I03

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	1.9	67.96	90.36	0.095	0.103	0.04	0.998	6.1	6.1		16787

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	1.9	3.88			0.274

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	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	AB INITIO PHASING	THROUGHOUT	1.9	67.96	1.4	16787	1678	90.36	0.2429	0.2412	0.2583	37.1107

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1640
Nucleic Acid Atoms
Solvent Atoms	184
Heterogen Atoms	17

Software

Software
Software Name	Purpose
PHENIX	refinement
PDB_EXTRACT	data extraction
Arcimboldo	phasing
BUCCANEER	model building
DIALS	data reduction
Aimless	data scaling

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.