Experiment: 3ZXU

Crystal structure of the Ctf19-Mcm21 kinetochore heterodimer from yeast

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8.1	293	7-10 % (W/V) POLYETHYLENE GLYCOL 8000, 14-20 % (V/V) ETHYLENE GLYCOL, 30 MM CACL2, 30 MM MGCL2, 100 MM BICINE/TRIS PH 8.1-8.5, 0.5 MM TCEP, TEMPERATURE 293 K.

Crystal Properties
Matthews coefficient	Solvent content
5.7	78.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 239.036	α = 90
b = 239.036	β = 90
c = 179.487	γ = 120

Symmetry
Space Group	P 62 2 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	CCD	ADSC CCD	MIRRORS	2010-10-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-C		APS	24-ID-C

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	3.7	48.36	97.2	0.19	13.9	18.8		31774		0.7	158.26

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	3.7	3.9	85.2		4.99	0.7	16.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	SAD	NONE	3.7	47.492	31641	2206	96.68	0.1848	0.183	0.2089	0.2237	243

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]
-29.0736			-29.0736		1.0441

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	17.659
f_angle_d	1.665
f_chiral_restr	0.088
f_bond_d	0.011
f_plane_restr	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6660
Nucleic Acid Atoms
Solvent Atoms	48
Heterogen Atoms	3

Software

Software
Software Name	Purpose
PHENIX	refinement
XDS	data reduction
SCALA	data scaling
SHELX	phasing