2R5M

Crystal Structure of the two MBT repeats from Sex-Comb on Midleg (SCM) in complex with peptide R-(me)K-S

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
2.19	43.76

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 82.71	α = 90
b = 82.71	β = 90
c = 76.23	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		2007-04-01	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	2.45	20	97.9	0.101	4.1	13.3		9984	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	2.45	2.55	99		0.368	1.4	13.8	1112

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2.65	20	7531	377	97.76	0.17295	0.17295	0.16942	0.24467	RANDOM	63.991

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]
2.65			2.65		-5.3

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.565
r_dihedral_angle_4_deg	20.716
r_dihedral_angle_3_deg	17.793
r_dihedral_angle_1_deg	6.526
r_scangle_it	3.571
r_scbond_it	2.319
r_angle_refined_deg	2.303
r_mcangle_it	1.469
r_mcbond_it	0.856
r_nbtor_refined	0.32
r_symmetry_vdw_refined	0.241
r_nbd_refined	0.219
r_xyhbond_nbd_refined	0.182
r_symmetry_hbond_refined	0.165
r_chiral_restr	0.124
r_bond_refined_d	0.019
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	1689
Nucleic Acid Atoms
Solvent Atoms	173
Heterogen Atoms

Software

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