3FDT

Crystal structure of the complex of human chromobox homolog 5 (CBX5) with H3K9(me)3 peptide

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3F2U

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	298	35% PEG 400, 0.2M Na Cl, 0.1M Tris (pH 8.5), VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.15	42.92

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 73.123	α = 90
b = 73.123	β = 90
c = 28.413	γ = 90

Symmetry
Space Group	P 41 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	200				2008-11-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-B	0.97948	APS	23-ID-B

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	2	100	99.6	0.086		12.1		5592

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)
	2	2.07	96.9		0.381		6.7

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	3F2U	2	51.71	5310	253	99.62	0.19928	0.19665	0.25739	RANDOM	32.037

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]
0.66			0.66		-1.32

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	25.555
r_dihedral_angle_4_deg	22.139
r_dihedral_angle_3_deg	14.443
r_dihedral_angle_1_deg	7.07
r_scangle_it	5.9
r_scbond_it	3.395
r_mcangle_it	1.961
r_angle_refined_deg	1.883
r_mcbond_it	1.053
r_nbtor_refined	0.312
r_symmetry_hbond_refined	0.288
r_nbd_refined	0.21
r_symmetry_vdw_refined	0.185
r_xyhbond_nbd_refined	0.148
r_chiral_restr	0.119
r_bond_refined_d	0.017
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	495
Nucleic Acid Atoms
Solvent Atoms	34
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction