3MN9

Structures of actin-bound WH2 domains of Spire and the implication for filament nucleation

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2HF4

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.6	277	0.2M Ammonium formate pH 6.6 20% PEG 3350, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.98	58.77

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 126.08	α = 90
b = 126.08	β = 90
c = 56.37	γ = 120

Symmetry
Space Group	P 65

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	90	CCD	MAR CCD 165 mm	LN2 cooled fixed-exit Si(111) monochromator	2010-03-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X10SA	0.9792	SLS	X10SA

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	50	76.2	0.067			29535	22506	2	2

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	2.3	38.5		0.269	3.9

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	2HF4	2	50	20832	1116	63.18	0.18726	0.18382	0.25089	RANDOM	42.81

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]
0.4	0.2		0.4		-0.59

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.995
r_dihedral_angle_4_deg	18.538
r_dihedral_angle_3_deg	15.937
r_dihedral_angle_1_deg	5.874
r_scangle_it	4.642
r_scbond_it	2.816
r_mcangle_it	1.652
r_angle_refined_deg	1.594
r_mcbond_it	0.868
r_chiral_restr	0.102

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.995
r_dihedral_angle_4_deg	18.538
r_dihedral_angle_3_deg	15.937
r_dihedral_angle_1_deg	5.874
r_scangle_it	4.642
r_scbond_it	2.816
r_mcangle_it	1.652
r_angle_refined_deg	1.594
r_mcbond_it	0.868
r_chiral_restr	0.102
r_bond_refined_d	0.018
r_gen_planes_refined	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2912
Nucleic Acid Atoms
Solvent Atoms	138
Heterogen Atoms	32

Software

Software
Software Name	Purpose
MAR345	data collection
MOLREP	phasing
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling

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 R01GM157729.