5N28

METHYL-COENZYME M REDUCTASE III FROM METHANOTORRIS FORMICICUS MONOCLINIC FORM

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	291	2 ul of MCR III from M. formicicus (35 mg/ml) and 1 ul of reservoir solution containing 20% PEG 8000 (w/v), 100 mM MES pH 7.0. The cryoprotection solution contains 20% PEG 8000 (w/v), 100 mM MES pH 7.0, 25% ethylene glycol (v/v).

Crystal Properties
Matthews coefficient	Solvent content
2.27	45.8

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 103.68	α = 90
b = 81.16	β = 107.8
c = 154.95	γ = 90

Symmetry
Space Group	P 1 21 1

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 PILATUS 6M		2014-05-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X10SA	0.99998	SLS	X10SA

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	2.8	49.36	99.9	0.103	0.05	0.997	10.8	5		60676			79.71

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	2.8	2.95	100		0.755	0.371	0.317	2.1	5	8783

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	MCRII from Methanothermobacter wolfeii PDB:5A8W	2.8	48.43	60657	3016	99.9	0.1936	0.1931	0.2043	RANDOM	94.18

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]
0.9682		-2.6958	1.3006		-2.2688

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	17.27
t_omega_torsion	2.34
t_angle_deg	1.05
t_bond_d	0.008
t_dihedral_angle_d
t_incorr_chiral_ct
t_pseud_angle
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion
t_chiral_improper_torsion
t_sum_occupancies
t_utility_distance
t_utility_angle
t_utility_torsion
t_ideal_dist_contact

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	19266
Nucleic Acid Atoms
Solvent Atoms	28
Heterogen Atoms	181

Software

Software
Software Name	Purpose
BUSTER	refinement
XDS	data reduction
SCALA	data scaling
MOLREP	phasing