4YML

Crystal structure of Escherichia coli 5'-methylthioadenosine/S-adenosyl homocysteine nucleosidase (MTAN) complexed with (3S,4R)-methylthio-DADMe-Immucillin-A

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1Y6Q

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		298	Protein (10 mg/mL); Reservoir (0.1 M BIS-TRIS pH 7.0 and 2.4 M sodium malonate)

Crystal Properties
Matthews coefficient	Solvent content
2.21	44.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 71.95	α = 90
b = 91.95	β = 90
c = 69.58	γ = 90

Symmetry
Space Group	C 2 2 21

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	RAYONIX MX225HE		2015-02-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 31-ID	0.97931	APS	31-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim 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	1.75	25	84.1	0.062	0.073	14.08	3.74		19032		-3	28.508

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.75	1.79	97.8		0.669	0.781	2.44

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1Y6Q	1.75	25	19032	1002	84.71	0.1728	0.1715	0.18	0.1981	0.21	RANDOM	23.758

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]
-1.46			-0.01		1.47

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.474
r_dihedral_angle_4_deg	16.588
r_dihedral_angle_3_deg	13.294
r_dihedral_angle_1_deg	5.885
r_mcangle_it	1.814
r_angle_refined_deg	1.345
r_mcbond_it	1.194
r_mcbond_other	1.185
r_angle_other_deg	0.763
r_chiral_restr	0.07

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1693
Nucleic Acid Atoms
Solvent Atoms	130
Heterogen Atoms	25

Software

Software
Software Name	Purpose
XDS	data reduction
XSCALE	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction

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.