2R58

Crystal Structure of the two MBT repeats from Sex-Comb on Midleg (SCM) in Complex with Di-Methyl Lysine

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	7.3	293	15% (w/v) PEG3350, 100 mM calcium acetate and 3% ethanol, pH 7.3, VAPOR DIFFUSION, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.23	44.74

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 83.12	α = 90
b = 83.12	β = 90
c = 75.768	γ = 90

Symmetry
Space Group	P 43 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	100	CCD	ADSC QUANTUM 315		2006-04-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29	0.934	ESRF	ID29

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	20.8	96.1	0.0456	6.5	9.4		17807	1	1

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	2	2.1	81.1		0.364	1.7	7.1

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2R57	2	20.8	16819	907	96.19	0.18803	0.18803	0.18596	0.22875	RANDOM	36.647

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]
0.83			0.83		-1.67

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.56
r_dihedral_angle_4_deg	17.248
r_dihedral_angle_3_deg	15.035
r_dihedral_angle_1_deg	5.554
r_scangle_it	2.297
r_scbond_it	1.563
r_angle_refined_deg	1.222
r_mcangle_it	1.043
r_mcbond_it	0.655
r_nbtor_refined	0.302
r_nbd_refined	0.188
r_symmetry_vdw_refined	0.177
r_symmetry_hbond_refined	0.157
r_xyhbond_nbd_refined	0.134
r_chiral_restr	0.09
r_bond_refined_d	0.009
r_gen_planes_refined	0.004
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	1661
Nucleic Acid Atoms
Solvent Atoms	172
Heterogen Atoms	12

Software

Software
Software Name	Purpose
REFMAC	refinement
DNA	data collection
XDS	data reduction
XSCALE	data scaling
PHASER	phasing