3FTQ

Crystal structure of Septin 2 in complex with GppNHp and Mg2+

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	298	1.2M Potassium Acetate, 0.1M HEPES pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.94	58.1

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 65.98	α = 90
b = 118.44	β = 90
c = 190.82	γ = 90

Symmetry
Space Group	P 21 21 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		2007-01-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06SA	0.97906	SLS	X06SA

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	2.9	20		0.078	0.061		4.8		33762

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.9	2.974			0.366	0.371	4.81	4.8	3240

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 2QA5	2.9	19.97	33760	1689	100	0.249	0.247	0.29	RANDOM	31.273

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]
2.1			-2.08		-0.02

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.694
r_dihedral_angle_3_deg	20.871
r_dihedral_angle_4_deg	20.266
r_dihedral_angle_1_deg	5.369
r_scangle_it	1.449
r_angle_refined_deg	1.224
r_mcangle_it	0.921
r_scbond_it	0.835
r_mcbond_it	0.519
r_nbtor_refined	0.312

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.694
r_dihedral_angle_3_deg	20.871
r_dihedral_angle_4_deg	20.266
r_dihedral_angle_1_deg	5.369
r_scangle_it	1.449
r_angle_refined_deg	1.224
r_mcangle_it	0.921
r_scbond_it	0.835
r_mcbond_it	0.519
r_nbtor_refined	0.312
r_nbd_refined	0.218
r_symmetry_vdw_refined	0.218
r_symmetry_hbond_refined	0.167
r_xyhbond_nbd_refined	0.161
r_chiral_restr	0.078
r_metal_ion_refined	0.07
r_bond_refined_d	0.009
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8147
Nucleic Acid Atoms
Solvent Atoms	103
Heterogen Atoms	132

Software

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

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.