3I9Q

Crystal Structure of the triple mutant S19G-P20D-R21S of alpha spectrin SH3 domain

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	2 M ammonium sulphate, 0.1 M MES pH 6.5, vapor diffusion, hanging drop, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.16	61.04

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.231	α = 90
b = 42.231	β = 90
c = 93.655	γ = 90

Symmetry
Space Group	P 41 21 2

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	MAR CCD 165 mm		2008-03-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM16	0.97	ESRF	BM16

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	1.45	20	95.8	0.063	19.3	13.4	15848	15182			22.168

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	1.45	1.5	99.9		0.433	6.82	13.9	1552

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 1SHG	1.45	20	15848	15041	756	95.59	0.232	0.232	0.243	RANDOM	14.129

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]
0.15			0.15		-0.29

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	48.471
r_dihedral_angle_4_deg	26.431
r_dihedral_angle_3_deg	14.223
r_dihedral_angle_1_deg	6.143
r_scangle_it	5.858
r_scbond_it	4.32
r_mcangle_it	2.917
r_angle_refined_deg	2.371
r_mcbond_it	2.074
r_chiral_restr	0.155

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	48.471
r_dihedral_angle_4_deg	26.431
r_dihedral_angle_3_deg	14.223
r_dihedral_angle_1_deg	6.143
r_scangle_it	5.858
r_scbond_it	4.32
r_mcangle_it	2.917
r_angle_refined_deg	2.371
r_mcbond_it	2.074
r_chiral_restr	0.155
r_gen_planes_refined	0.02
r_bond_refined_d	0.018

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	465
Nucleic Acid Atoms
Solvent Atoms	58
Heterogen Atoms	5

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
MrBUMP	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.