2CL0

CRYSTAL STRUCTURE ANALYSIS OF A FLUORESCENT FORM OF H-RAS P21 IN COMPLEX WITH GppNHp

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.6		RESERVOIR SOLUTION: 64 MM TRIS PH 7.6, 20 MM MAGNESIUM CHLORIDE, 10 MM DTT, 0.1 MM SODIUM AZIDE, 26% PEG 400; PROTEIN SOLUTION: 64 MM TRIS PH 7.6, 20 MM MAGNESIUM CHLORIDE, 10 MM DTT, 0.1 MM SODIUM AZIDE

Crystal Properties
Matthews coefficient	Solvent content
2.9	56.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 88.54	α = 90
b = 88.54	β = 90
c = 144.1	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	ADSC CCD		2002-12-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4		ESRF	ID14-4

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	1.7	67.42	99.9	0.08	16.9	11.6		23933

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	1.7	1.75	88.8		0.88	2.05	6.17

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	PDB ENTRY 5P21	1.8	67.42	19368	1030	99.9	0.148	0.146	0.185	RANDOM	28.74

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]
-0.88	-0.44		-0.88		1.32

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.67
r_dihedral_angle_4_deg	20.662
r_dihedral_angle_3_deg	16.242
r_dihedral_angle_1_deg	5.911
r_scangle_it	3.754
r_scbond_it	2.538
r_angle_refined_deg	1.815
r_mcangle_it	1.582
r_mcbond_it	1.371
r_angle_other_deg	0.89
r_symmetry_vdw_other	0.421
r_symmetry_vdw_refined	0.37
r_symmetry_hbond_refined	0.289
r_nbd_refined	0.21
r_nbd_other	0.204
r_nbtor_refined	0.177
r_xyhbond_nbd_refined	0.174
r_chiral_restr	0.108
r_nbtor_other	0.086
r_bond_refined_d	0.016
r_gen_planes_refined	0.008
r_bond_other_d	0.003
r_gen_planes_other	0.002
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1317
Nucleic Acid Atoms
Solvent Atoms	168
Heterogen Atoms	66

Software

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