2Q1N

Actin Dimer Cross-linked Between Residues 41 and 374

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	298	30% MPD, 0.1M sodium acetate, 0.02 M calcium chloride, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.45	49.89

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 108.057	α = 90
b = 71.813	β = 104.7
c = 54.787	γ = 90

Symmetry
Space Group	P 1 21 1

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	ADSC QUANTUM 315		2005-10-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.2	1.00	ALS	8.2.2

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	2.7	90	99.5	0.093	9.4	3.5	23524	23524		-3	71.8

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	2.7	2.8	97.1		0.471		3	2291

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	pdb entry 2A5X	2.7	52.26	22428	22428	1147	99.75	0.231	0.231	0.228	0.277	RANDOM	49.45

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]
-7.56		-1.07	6.18		0.84

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.186
r_dihedral_angle_4_deg	14.117
r_dihedral_angle_3_deg	12.623
r_dihedral_angle_1_deg	3.75
r_scangle_it	3.5
r_mcangle_it	3.065
r_scbond_it	2.511
r_mcbond_it	2.168
r_angle_refined_deg	1.455
r_angle_other_deg	0.876
r_mcbond_other	0.437
r_symmetry_vdw_refined	0.216
r_symmetry_hbond_refined	0.215
r_symmetry_vdw_other	0.213
r_nbd_refined	0.2
r_nbd_other	0.185
r_metal_ion_refined	0.183
r_nbtor_refined	0.175
r_xyhbond_nbd_refined	0.164
r_nbtor_other	0.081
r_chiral_restr	0.068
r_bond_refined_d	0.009
r_gen_planes_refined	0.003
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5401
Nucleic Acid Atoms
Solvent Atoms	23
Heterogen Atoms	124

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
BOS	data collection