Experiment: 3LVL

Crystal Structure of E.coli IscS-IscU complex

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1P3W	PDB ENTRY 1P3W and 2Z7E
experimental model	PDB	2Z7E	PDB ENTRY 1P3W and 2Z7E

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	9	295	16% PEG 8000, 0.2M Sodium Nitrate, 4% Glycerol, 0.1M Bicine pH 9.0, vapor diffusion, sitting drop, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.53	51.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 77.647	α = 90
b = 77.647	β = 90
c = 355.986	γ = 120

Symmetry
Space Group	P 61 2 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	MARMOSAIC 225 mm CCD		2009-07-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	OTHER	0.9793

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	3	50	83.4	0.093	12.1	16.6		11488

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)
	3	3.11	36.5		0.285		6	486

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 1P3W and 2Z7E	3	44.489	1.34	11472	555	83.82	0.227	0.225	0.2208	0.269	0.2689	65.786

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]
17.556			17.556		-35.111

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	17.242
f_angle_d	0.654
f_chiral_restr	0.047
f_bond_d	0.004
f_plane_restr	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3938
Nucleic Acid Atoms
Solvent Atoms	13
Heterogen Atoms	15

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing