3TS9 | pdb_00003ts9

Crystal Structure of the MDA5 Helicase Insert Domain

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	9	293	Crystal #1: 1.9 M ammonium sulfate, 49 mM sodium phosphate, 49 mM glycine, 14 mM succinic acid, pH 9.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
2	VAPOR DIFFUSION, HANGING DROP	9	293	Crystal #2: 2.0 M ammonium sulfate, 49 mM sodium phosphate, 49 mM glycine, 14 mM succinic acid, pH 9.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 23.878	α = 90
b = 57.618	β = 90
c = 90.332	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	ADSC QUANTUM 315		2010-06-22	M	SINGLE WAVELENGTH
2	2	x-ray	100	CCD	ADSC QUANTUM 315		2010-04-29	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	1.0750	NSLS	X29A
2	SYNCHROTRON	NSLS BEAMLINE X29A	0.9791, 0.9793	NSLS	X29A

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	2.003	50	100	0.122	8.1	6.7	8917	8873		1.87

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1,2	2.003	2.09	100			6.8	848

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	2.003	35.546	1.87	8917	8829	442	99.04	0.1943	0.1943	0.1927	0.1903	0.2216	0.2187	RANDOM	41.0735

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]
-2.6168			13.6007		1.8683

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	14.204
f_angle_d	0.578
f_chiral_restr	0.047
f_bond_d	0.002
f_plane_restr	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1047
Nucleic Acid Atoms
Solvent Atoms	40
Heterogen Atoms	15

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing
RESOLVE	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction
CBASS	data collection