3I3S

Crystal Structure of H-Ras with Thr50 replaced by Isoleucine

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	hanging drop	7.5	285	17% PEG 6000, 200 mM CaCl2, pH 7.5, hanging drop, temperature 285K

Crystal Properties
Matthews coefficient	Solvent content
2.74	55.08

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 89.21	α = 90
b = 89.21	β = 90
c = 134.64	γ = 120

Symmetry
Space Group	H 3 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	MARMOSAIC 225 mm CCD		2007-03-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X10SA	0.9998	SLS	X10SA

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	1.36	99	99.8	0.043	25.36		44436	44357		-3	21.869

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)
	1.36	1.4	99.9		0.295	4.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	PDB ENTRY 5P21	1.36	30.86	44436	44353	2218	100	0.16	0.159	0.178	RANDOM	18.969

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]
-0.04	-0.02		-0.04		0.07

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.98
r_dihedral_angle_4_deg	21.962
r_dihedral_angle_3_deg	12.332
r_sphericity_free	6.412
r_dihedral_angle_1_deg	5.693
r_scangle_it	3.289
r_sphericity_bonded	2.498
r_scbond_it	2.426
r_mcangle_it	1.874
r_angle_refined_deg	1.539
r_mcbond_it	1.311
r_rigid_bond_restr	1.225
r_angle_other_deg	0.939
r_symmetry_vdw_refined	0.567
r_mcbond_other	0.478
r_symmetry_hbond_refined	0.419
r_nbd_refined	0.282
r_symmetry_vdw_other	0.247
r_nbd_other	0.215
r_xyhbond_nbd_refined	0.201
r_nbtor_refined	0.178
r_chiral_restr	0.084
r_nbtor_other	0.082
r_symmetry_metal_ion_refined	0.056
r_metal_ion_refined	0.05
r_bond_refined_d	0.013
r_gen_planes_refined	0.007
r_bond_other_d	0.002
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1320
Nucleic Acid Atoms
Solvent Atoms	102
Heterogen Atoms	36

Software

Software
Software Name	Purpose
XSCALE	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
MAR345dtb	data collection
XDS	data reduction
MOLREP	phasing