4LHZ

Crystal structure of GTP-bound Rab8:Rabin8

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.6	293	Nucleotide-free Rab8a1 184:Rabin8157-232 was crystallized in 18% (w/v) PEG3350, 0.1 M Li2SO4, 0.1 M MES pH 6.6. Before data collection, the complex crystal was protected with cryo solution (30% (w/v) PEG3350, 0.1 M Li2SO4, 0.1 M MES pH 6.6). In order to produce nucleotide-bound forms of Rab8:Rabin8 complexes, the nucleotide-free Rab8:Rabin8 crystals were soaked with cryo solution containing 30 % (w/v) PEG3350, 0.1 M Li2SO4, 0.1 M MES pH 6.6 and 1 mM respective nucleotide GDP/GTP for one hours at 278 K, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.59	65.73

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 81.337	α = 90
b = 165.561	β = 90
c = 167.263	γ = 90

Symmetry
Space Group	C 2 2 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	CCD	MARMOSAIC 225 mm CCD		2009-05-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X10SA	1.0000	SLS	X10SA

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	3.2	20	99.4			19050	18932	9.9	9.54

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 1YZQ	3.2	19.99	17905	954	99.53	0.27918	0.27761	0.30877	RANDOM	92.122

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]
4.28			2.11		-6.39

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.704
r_dihedral_angle_3_deg	23.436
r_dihedral_angle_4_deg	21.853
r_dihedral_angle_1_deg	7.52
r_angle_other_deg	4.439
r_scangle_it	3.415
r_scbond_it	2.118
r_mcangle_it	1.995
r_angle_refined_deg	1.639
r_mcbond_it	1.095
r_mcbond_other	1.082
r_nbd_refined	0.268
r_symmetry_vdw_other	0.25
r_nbd_other	0.24
r_nbtor_refined	0.203
r_symmetry_vdw_refined	0.192
r_xyhbond_nbd_refined	0.161
r_nbtor_other	0.114
r_xyhbond_nbd_other	0.106
r_chiral_restr	0.076
r_symmetry_hbond_refined	0.056
r_bond_refined_d	0.016
r_gen_planes_refined	0.005
r_gen_planes_other	0.005
r_bond_other_d
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_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	4735
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	64

Software

Software
Software Name	Purpose
MOSFLM	data reduction
PHASES	phasing
REFMAC	refinement
XDS	data reduction
SCALEPACK	data scaling