2O6P

Crystal Structure of the heme-IsdC complex

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6	292	IsdC at 95mg/ml in 50mM Tris-HCl pH 8.0, 500mM NaCl mixed in equal volumes (2 + 2 l) with reservoir solution containing 26% PEG 550, MME, 18mM zinc sulphate, 0.1M MES pH 6.0, VAPOR DIFFUSION, SITTING DROP, temperature 292K

Crystal Properties
Matthews coefficient	Solvent content
2.08	40.91

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 47.489	α = 90
b = 70.441	β = 90
c = 88.685	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	277				2006-08-31	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29	0.933, 1.739, 1.741, 1.722	ESRF	ID29

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	1.5	47.5		0.03	12.3	4.3	48228	45711

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	1.5	1.6			0.43	1.8	4.9	6918

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	MAD	THROUGHOUT	1.5	35.99	48228	45711	2433	99.71	0.19487	0.19343	0.22204	RANDOM	21.346

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]
0.19			0.04		-0.22

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.366
r_dihedral_angle_3_deg	11.033
r_dihedral_angle_1_deg	6.17
r_dihedral_angle_4_deg	6.099
r_sphericity_free	3.95
r_scangle_it	2.879
r_sphericity_bonded	2.718
r_scbond_it	2.462
r_rigid_bond_restr	2.068
r_angle_refined_deg	1.444
r_mcangle_it	1.355
r_mcbond_it	0.954
r_nbtor_refined	0.301
r_symmetry_vdw_refined	0.213
r_nbd_refined	0.193
r_xyhbond_nbd_refined	0.117
r_symmetry_hbond_refined	0.101
r_chiral_restr	0.078
r_symmetry_metal_ion_refined	0.077
r_metal_ion_refined	0.025
r_bond_refined_d	0.009
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1960
Nucleic Acid Atoms
Solvent Atoms	189
Heterogen Atoms	94

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
SHARP	phasing