3OB9

Structure of the human MSL3 chromo-barrel domain at 2.5 Angstrom resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	9	298	2.0 Ammonium Sulfate, 100 mM CHES pH 9.0, , VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.5	50.89

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 179.178	α = 90
b = 36.696	β = 90.39
c = 85.574	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	77	CCD	MARMOSAIC 225 mm CCD	Si 111 monochromator and focusing mirrors	2009-05-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CLSI BEAMLINE 08ID-1	0.97934	CLSI	08ID-1

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	2.5	40	99	0.078	0.078	16.6	3.6	19711	19514			56.7

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	PDB entry 2F5K	2.5	29.4	18515	997	100	0.22823	0.22564	0.27726	RANDOM	45.605

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]
-2.69		2.09	1.35		1.37

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.439
r_dihedral_angle_4_deg	21.961
r_dihedral_angle_3_deg	17.288
r_dihedral_angle_1_deg	5.602
r_scangle_it	1.969
r_scbond_it	1.204
r_angle_refined_deg	1.091
r_mcangle_it	0.763
r_mcbond_it	0.388
r_chiral_restr	0.078
r_bond_refined_d	0.009
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3546
Nucleic Acid Atoms
Solvent Atoms	57
Heterogen Atoms	124

Software

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