6TM3

Structure of methylene-tetrahydromethanopterin dehydrogenase from Methylorubrum extorquens AM1 in a close conformation containing NADP+ and methylene-H4MPT

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1LU9

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8	281.15	The crystallized sample was 25 mg/ml MtdA supplemented with 2.5 mM methenyl-H4MPT, 2 mM NADPH in 25 mM Tris/HCl pH 7.5, 150 mM NaCl, 5% glycerol and 2 mM dithiothreitol. 0.7 ul protein sample was mixed with 0.7 ul of the reservoir solution containing 30% w/v polyethylene glycol monomethyl ether 5000, 100 mM Tris pH 8.0 and 200 mM lithium sulfate.

Crystal Properties
Matthews coefficient	Solvent content
2.63	53.22

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 125.754	α = 90
b = 125.754	β = 90
c = 125.754	γ = 90

Symmetry
Space Group	P 41 3 2

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-F		2018-02-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X10SA	1.00000	SLS	X10SA

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym I (Observed)	Rrim I (All)	Rpim I (All)	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	1.08	88.922	99.6	0.049	0.051	0.016	25.1	10	143688	143688

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Rrim I (All)	Rpim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.08	1.14	97.6		1.403	1.403	1.578	0.705	0.6	4.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1LU9	1.08	41.918	1.33	143278	7168	99.35	0.1135	0.1128	0.127	18.0707

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2098
Nucleic Acid Atoms
Solvent Atoms	501
Heterogen Atoms	144

Software

Software
Software Name	Purpose
PHENIX	refinement
SCALA	data scaling
PDB_EXTRACT	data extraction
XDS	data reduction
MOLREP	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729.