6G7R

Structure of fully reduced variant E28Q of E. coli hydrogenase-1 at pH 8

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	5LMM

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.1	296	100 mM tris pH 8.1, 150 mM NaCl, 200 mM LiSO4 19-21 % PEG 3350

Crystal Properties
Matthews coefficient	Solvent content
2.11	41.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 94.068	α = 90
b = 97.814	β = 90
c = 183.21	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	PIXEL	DECTRIS PILATUS3 6M		2017-05-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I24	0.9686	Diamond	I24

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	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	1.2	94.1	96.6	0.073	0.037	0.998	11.4	5.7		504435

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.2	1.22	92.4		0.83	0.46	0.463	1.7	5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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	5LMM	1.2	67.89	478639	25633	96.45	0.11189	0.11077	0.13303	RANDOM	13.918

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]
-0.27			-0.27		0.54

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.712
r_sphericity_free	24.217
r_dihedral_angle_4_deg	17.884
r_dihedral_angle_3_deg	11.929
r_sphericity_bonded	9.503
r_dihedral_angle_1_deg	6.24
r_long_range_B_other	3.061
r_long_range_B_refined	3.06
r_scangle_other	2.394
r_scbond_it	1.992
r_scbond_other	1.992
r_rigid_bond_restr	1.95
r_angle_refined_deg	1.561
r_mcangle_it	1.45
r_mcangle_other	1.45
r_mcbond_it	1.16
r_mcbond_other	1.16
r_angle_other_deg	0.59
r_chiral_restr	0.088
r_bond_refined_d	0.01
r_gen_planes_refined	0.01
r_bond_other_d	0.002
r_gen_planes_other	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	13150
Nucleic Acid Atoms
Solvent Atoms	1732
Heterogen Atoms	120

Software

Software
Software Name	Purpose
REFMAC	refinement
DIALS	data reduction
Aimless	data scaling
PHASER	phasing