2H6K

Histone H3 recognition and presentation by the WDR5 module of the MLL1 complex

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1ERJ	PDB ENTRY 1ERJ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				Crystals were grown by hanging drop vapour equilibration in Nextal plates as follows: 1 ul of 10 15 mg ml-1 protein solution (10 mM Tris, HCl (pH 7.4), 50 mM NaCl, and 10 mM 2-mercaptoethanol) were mixed with 1 ul of well solution composed of 50 mM HEPES (pH 7.5), 100 mM potassium formate, and 10-20% (w/v) polyethylene glycol 3350 and equilibrated at room temperature overnight against 1 ml of well solution.

Crystal Properties
Matthews coefficient	Solvent content
2.19	43.92

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 133.473	α = 90
b = 46.521	β = 116.86
c = 112.11	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	100	CCD	ADSC QUANTUM 315	mirrors	2006-01-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.2	0.98720	ALS	5.0.2

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	1.9	43.3	98.9	0.071	16.2	3.2	48816	47173	2	2	25.3

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	1.9	1.97	92.9		0.255	3.82	2.5	4525

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	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	PDB ENTRY 1ERJ	1.89	43.3	2	47173	44830	2379	94.5	0.162	0.14865	0.14646	0.18972	RANDOM	18.94

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]
-0.59		-0.68	-0.3		0.28

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.127
r_dihedral_angle_4_deg	18.247
r_dihedral_angle_3_deg	12.681
r_dihedral_angle_1_deg	7.185
r_scangle_it	2.756
r_scbond_it	1.716
r_angle_refined_deg	1.261
r_mcangle_it	1.031
r_mcbond_it	0.623
r_nbtor_refined	0.297
r_nbd_refined	0.193
r_symmetry_vdw_refined	0.177
r_symmetry_hbond_refined	0.152
r_xyhbond_nbd_refined	0.133
r_chiral_restr	0.086
r_bond_refined_d	0.011
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4875
Nucleic Acid Atoms
Solvent Atoms	696
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
ADSC	data collection
HKL-2000	data scaling
CNS	phasing