1PA7

Crystal structure of amino-terminal microtubule binding domain of EB1

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6	298	PEG4K, ammonium sulfate, MES, pH 6.0, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2	38.12

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 31.856	α = 90
b = 48.453	β = 103.36
c = 44.968	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	CCD	ADSC QUANTUM 4	mirror	2002-10-07	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X8C	0.9800	NSLS	X8C

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	1.45	20		0.042				23798

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	1.45	1.5			0.228			2278

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	MAD	THROUGHOUT	1.45	20	22304	1211	98.82	0.17358	0.17272	0.1886	RANDOM	12.199

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]
-0.36		0.17	-0.03		0.47

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.146
r_scangle_it	3.554
r_scbond_it	2.372
r_mcangle_it	1.446
r_angle_refined_deg	1.247
r_mcbond_it	0.788
r_angle_other_deg	0.78
r_symmetry_vdw_other	0.276
r_nbd_refined	0.229
r_nbd_other	0.218
r_xyhbond_nbd_refined	0.156
r_nbtor_other	0.083
r_chiral_restr	0.081
r_symmetry_vdw_refined	0.071
r_symmetry_hbond_refined	0.054
r_bond_refined_d	0.02
r_gen_planes_other	0.013
r_gen_planes_refined	0.009
r_bond_other_d	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1058
Nucleic Acid Atoms
Solvent Atoms	136
Heterogen Atoms	10

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
DM	phasing