5N2A

METHYL-COENZYME M REDUCTASE III FROM METHANOTORRIS FORMICICUS TRIGONAL FORM

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	291	Three single crystals appeared after one year and could be immediately fished. The drop contained a mixture of 0.8 ul of 35 mg/ml of MCR III Methanotorris formicicus and 0.8 ul of the reservoir solution containing 200 mM potassium bromide, 200 mM potassium thiocyanate, 100 mM Na cacodylate pH 6.5, 3% (w/v) PGA-LM, and 30% PEG 400 (v/v).

Crystal Properties
Matthews coefficient	Solvent content
2.75	55.34

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 127.699	α = 90
b = 127.699	β = 90
c = 160.376	γ = 120

Symmetry
Space Group	P 32 2 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 PILATUS3 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	48.13	99.9	0.188	0.094	0.987	7.4	5		37773			62.56

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		0.739	0.371	0.334	2.3	4.9

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	5A8W	2.8	39.85	37735	1898	99.88	0.1991	0.198	0.2208	RANDOM	61.19

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]
3.1879			3.1879		-6.3758

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	18.64
t_omega_torsion	2.55
t_angle_deg	1.01
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	9662
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	92

Software

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