2XNS

Crystal Structure Of Human G alpha i1 Bound To A Designed Helical Peptide Derived From The Goloco Motif Of RGS14

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5		HEXAGONAL CRYSTALS WERE GROWN BY HANGING DROP VAPOR DIFFUSION USING 1 MICROLITER PREMIXED GALPHA I1 AND GOLOCO PEPTIDE (1:1.5 MOLAR RATIO) AT 12 MG/ML IN BUFFER (10 MM TRIS PH 7.5, 1 MM MAGNESIUM CHLORIDE, 10 MICROMOLAR GDP, 5 MM DTT) AND 1 MICROLITER CRYSTALLIZATION SOLUTION (800 MM AMMONIUM SULFATE, 200 MM K/NA TARTRATE, 100 MM SODIUM CITRATE PH 5.5).

Crystal Properties
Matthews coefficient	Solvent content
9.3	86.78

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 265.261	α = 90
b = 265.261	β = 90
c = 265.261	γ = 90

Symmetry
Space Group	I 2 3

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	MARRESEARCH	MIRRORS	2010-04-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID		APS	22-ID

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	3.41	40	100	0.12	22.1	11.1		42418		-3	99.9

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	3.41	3.42	100		1	2.2	11.1

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 2OM2	3.41	39.99	40893	1489	99.83	0.22335	0.2226	0.24434	RANDOM	108.9

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]

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.191
r_dihedral_angle_3_deg	16.585
r_dihedral_angle_4_deg	14.714
r_dihedral_angle_1_deg	4.729
r_angle_refined_deg	1.091
r_scangle_it	0.89
r_mcangle_it	0.514
r_scbond_it	0.491
r_nbtor_refined	0.301
r_mcbond_it	0.272
r_symmetry_vdw_refined	0.186
r_nbd_refined	0.184
r_symmetry_hbond_refined	0.147
r_xyhbond_nbd_refined	0.124
r_chiral_restr	0.065
r_bond_refined_d	0.006
r_gen_planes_refined	0.003
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_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	5728
Nucleic Acid Atoms
Solvent Atoms	10
Heterogen Atoms	86

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing