3R6A

Crystal structure of an uncharacterized protein (hypothetical protein MM_3218) from Methanosarcina mazei.

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.6	293	2.1M ammonium sulfate; 0.1M Na acetate; Trehalose dihydrate, pH 4.6, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.51	51

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 62.433	α = 90
b = 62.433	β = 90
c = 149.595	γ = 120

Symmetry
Space Group	P 61

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		2010-11-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	0.9790	NSLS	X29A

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	1.76	49.88	99.4	0.104	12.8	22.5	32561	32561			21.8

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)
	1.76	1.81	99.3		0.588		21.1	2536

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	SAD	THROUGHOUT	1.76	43.82	31882	31882	1582	97.7	0.218	0.218	0.234	RANDOM	24.5

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]
2.36	1.92		2.36		-4.73

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral)angle_deg	25
c_angle_deg	1.4
c_improper_angle_deg	0.7
c_bond_d	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1910
Nucleic Acid Atoms
Solvent Atoms	101
Heterogen Atoms	4

Software

Software
Software Name	Purpose
CBASS	data collection
SHELX	model building
SHARP	phasing
CNS	refinement
HKL-2000	data reduction
HKL-2000	data scaling
SHELX	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.