3M2U

Structural Insight into Methyl-Coenzyme M Reductase Chemistry using Coenzyme B Analogues

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		282	PEG 400, magnesium acetate, vapor diffusion, sitting drop, temperature 282K

Crystal Properties
Matthews coefficient	Solvent content
2.18	43.47

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 82.016	α = 90
b = 118.26	β = 91.84
c = 122.387	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	CCD	ADSC QUANTUM 315		2007-12-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 14-BM-C	0.90020	APS	14-BM-C

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	1.4	50	99.9	0.073	20.389	5.4	446793	446253	1	3

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	1.4	1.45	100		0.447	4.029	5.4

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	FOURIER SYNTHESIS	THROUGHOUT	1.4	19.89	452782	423854	22348	98.55	0.13163	0.13037	0.1553	RANDOM	14.57

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]
0.06		0.06	0.59		-0.65

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.685
r_dihedral_angle_4_deg	15.916
r_dihedral_angle_3_deg	12.881
r_dihedral_angle_1_deg	6.38
r_scangle_it	4.897
r_scbond_it	3.056
r_angle_refined_deg	2.625
r_mcangle_it	1.947
r_mcbond_it	1.25
r_chiral_restr	0.195
r_bond_refined_d	0.033
r_gen_planes_refined	0.016
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
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_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	19098
Nucleic Acid Atoms
Solvent Atoms	2290
Heterogen Atoms	282

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
BioCARS-developed	data collection
HKL-2000	data reduction
HKL-2000	data scaling
REFMAC	phasing