5OVH

Ras guanine nucleotide exchange factor SOS1 (Rem-cdc25) in complex with small molecule inhibitor compound 21

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	293	Protein concentration 30.7 mg/ml. Protein buffer 25 Millimolar TRIS-HCL PH 7.5, 50 millimolar NaCl, 1 millimolar DTT. Reservoir 23% (v/v) ethylenglycol. Protein incubated with 5 MILLIMOLAR LIGAND overnight at 277K prior to crystallization.

Crystal Properties
Matthews coefficient	Solvent content
2.71	54.69

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 41.413	α = 90
b = 85.362	β = 90
c = 176.221	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS 6M		2015-08-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	BESSY BEAMLINE 14.1	0.91841	BESSY	14.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym I (Observed)	CC (Half)	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	2.3	48.4	99.5	0.051	0.999	22.13	5.3		28560			45.4

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.3	2.44	98.8		0.328	0.94	4.86	5.33

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	2ii0	2.3	44.06	27149	1429	99.59	0.26324	0.25969	0.33022	RANDOM	49.569

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]
3.86			-1.98		-1.88

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.787
r_dihedral_angle_3_deg	14.43
r_dihedral_angle_4_deg	11.681
r_long_range_B_refined	7.712
r_long_range_B_other	7.711
r_scangle_other	5.229
r_mcangle_it	5.123
r_mcangle_other	5.122
r_dihedral_angle_1_deg	4.828
r_mcbond_it	3.229
r_mcbond_other	3.223
r_scbond_it	3.17
r_scbond_other	3.167
r_angle_refined_deg	1.098
r_angle_other_deg	0.863
r_chiral_restr	0.058
r_bond_refined_d	0.007
r_gen_planes_refined	0.003
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3778
Nucleic Acid Atoms
Solvent Atoms	316
Heterogen Atoms	39

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XDS	data scaling
MOLREP	phasing