3FFB

Gi-alpha-1 mutant in GDP bound form

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	6	293	100 mM Sodium Acetate pH 5.9-6.3, 1.8-2.1 M Ammonium Sulphate, VAPOR DIFFUSION, temperature 293K, pH 6.0

Crystal Properties
Matthews coefficient	Solvent content
3.19	61.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 121.761	α = 90
b = 121.761	β = 90
c = 68.714	γ = 90

Symmetry
Space Group	I 4

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	298	CCD	ADSC QUANTUM 315	mirrors	2006-11-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-C		APS	24-ID-C

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	2.57	59.8	100	0.06		7.3		16157	3	3	58.45

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)
	2.57	2.7	100		0.275	7.4	7.5	17350

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-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1BOF	2.57	59.8	15347	810	99.99	0.181	0.226	RANDOM	41.565

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]
-0.31			-0.31		0.63

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.186
r_dihedral_angle_4_deg	20.126
r_dihedral_angle_3_deg	16.08
r_dihedral_angle_1_deg	5.391
r_scangle_it	4.1
r_scbond_it	2.614
r_mcangle_it	1.95
r_angle_refined_deg	1.372
r_mcbond_it	1.116
r_nbtor_refined	0.307
r_symmetry_vdw_refined	0.26
r_symmetry_hbond_refined	0.214
r_nbd_refined	0.203
r_xyhbond_nbd_refined	0.169
r_chiral_restr	0.088
r_bond_refined_d	0.012
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2607
Nucleic Acid Atoms
Solvent Atoms	46
Heterogen Atoms	33

Software

Software
Software Name	Purpose
ADSC	data collection
PHASER	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling