3M0S

Crystal Structure of the R21D mutant of alpha-spectrin SH3 domain. Crystal obtained in ammonium sulphate at pH 7

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	COUNTER-DIFFUSION	7	298	0.8 M ammonium sulphate, 0.1 M HEPES pH 7, counter diffusion, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.67	53.99

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 34.39	α = 90
b = 42.217	β = 90
c = 49.002	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	CCD ADSC_Q210		2009-06-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM16	0.9700	ESRF	BM16

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	1.598	31.984	98.6	0.064	0.064	17	6.4	9927	9788			21.29

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)
	1.6	1.66	88.4		0.378	0.378	3.81	3.4	867

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 1SHG	1.6	20	9242	9711	469	98.42	0.17758	0.178	0.176	0.209	RANDOM	27.955

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]
2.43			-2.02		-0.42

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	47.705
r_dihedral_angle_4_deg	33.934
r_dihedral_angle_3_deg	14.667
r_scangle_it	10.039
r_dihedral_angle_1_deg	6.801
r_scbond_it	5.963
r_mcangle_it	4.48
r_mcbond_it	2.501
r_angle_refined_deg	1.87
r_chiral_restr	0.166

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	47.705
r_dihedral_angle_4_deg	33.934
r_dihedral_angle_3_deg	14.667
r_scangle_it	10.039
r_dihedral_angle_1_deg	6.801
r_scbond_it	5.963
r_mcangle_it	4.48
r_mcbond_it	2.501
r_angle_refined_deg	1.87
r_chiral_restr	0.166
r_bond_refined_d	0.016
r_gen_planes_refined	0.016

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	469
Nucleic Acid Atoms
Solvent Atoms	38
Heterogen Atoms	5

Software

Software
Software Name	Purpose
SCALA	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
DENZO	data reduction
SCALEPACK	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 R01GM133198.