3NRY

Insights into anti-parallel microtubule crosslinking by PRC1, a conserved microtubule binding protein

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	9.5	277	1:1 v/v protein (50 mg/ml in 80 mM PIPES, pH 6.8, 1 mM MgCl2, 1 mM EDTA, 150 mM KCl) and reservoir buffer (100 mM CHES pH 9.5, 30 % PEG 3000), VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.11	41.81

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 51.043	α = 90
b = 51.043	β = 90
c = 90.347	γ = 120

Symmetry
Space Group	P 62

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	173	CCD	ADSC QUANTUM 315	Single crystal side bounce	2009-04-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-E	.97918	APS	24-ID-E

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	2	25	98.3	0.082	0.082	20.1	3.5	17696	17342

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2	2.03	97.3		0.469	0.469	2	2.8	914

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	2	25	17696	8670	435	99.76	0.239	0.23953	0.23788	0.27378	RANDOM	24.778

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]
1.42	0.71		1.42		-2.13

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.338
r_dihedral_angle_4_deg	21.597
r_dihedral_angle_3_deg	15.982
r_dihedral_angle_1_deg	4.966
r_scangle_it	3.319
r_scbond_it	1.966
r_mcangle_it	1.298
r_angle_refined_deg	1.047
r_angle_other_deg	0.791
r_mcbond_it	0.66
r_mcbond_other	0.114
r_chiral_restr	0.064
r_bond_refined_d	0.01
r_gen_planes_refined	0.004
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1042
Nucleic Acid Atoms
Solvent Atoms	72
Heterogen Atoms

Software

Software
Software Name	Purpose
ADSC	data collection
SHARP	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling