3DAF

The crystal structure of [Fe]-hydrogenase holoenzyme (HMD) from METHANOCALDOCOCCUS JANNASCHII cocrystallized with cyanide

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2BOJ	PDB ENTRY 2BOJ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	283	50% MPD, 0.1M TRIS/HCL, 20mM NH4H2PO4, cyanide, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 283K

Crystal Properties
Matthews coefficient	Solvent content
2.64	53.42

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 97.14	α = 90
b = 97.14	β = 90
c = 166.03	γ = 90

Symmetry
Space Group	I 41 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	mirrors	2007-02-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X10SA	0.99198	SLS	X10SA

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	1.75	30	0.901	0.065	0.065	18.3	6.1	36729	36729

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	1.75	1.8	73.1		0.49	0.51	4	5.2	2389

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 2BOJ	1.75	10	36673	36673	1944	96.31	0.1883	0.1883	0.18653	0.22154	RANDOM	34.124

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]
0.2			0.2		-0.4

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.785
r_dihedral_angle_4_deg	19.369
r_dihedral_angle_3_deg	14.394
r_dihedral_angle_1_deg	5.372
r_scangle_it	4.057
r_scbond_it	2.613
r_angle_refined_deg	1.722
r_mcangle_it	1.541
r_mcbond_it	1.064
r_nbtor_refined	0.3
r_nbd_refined	0.214
r_chiral_restr	0.21
r_symmetry_vdw_refined	0.183
r_symmetry_hbond_refined	0.16
r_xyhbond_nbd_refined	0.155
r_bond_refined_d	0.017
r_gen_planes_refined	0.007
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2591
Nucleic Acid Atoms
Solvent Atoms	214
Heterogen Atoms	49

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345dtb	data collection
XDS	data reduction
XDS	data scaling
EPMR	phasing