4WKP

Crystal structure of Helicobacter pylori 5'-methylthioadenosine/S-adenosyl homocysteine nucleosidase (MTAN) complexed with 2-(2-hydroxyethoxy)ethylthiomethyl-DADMe-Immucillin-A

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		295	Protein (10 mg/mL); Reservoir (0.2 M sodium fluoride and 2.2 M ammonium sulfate); Cryoprotection (20% (v/v) glycerol)

Crystal Properties
Matthews coefficient	Solvent content
2.21	44.28

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 72.706	α = 90
b = 74.078	β = 90
c = 176.328	γ = 90

Symmetry
Space Group	P 21 21 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	ADSC QUANTUM 315r		2014-06-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	1.075	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	1.58	50	98.4	0.107	7.8	7.8		128267			12.8

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	1.58	1.61	94.3		0.874	2.27	7.3	6101

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	4FFS	1.58	25	121480	6438	98.37	0.1859	0.1845	0.2131	RANDOM	15.966

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]
0.21			0.47		-0.68

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.838
r_dihedral_angle_4_deg	13.259
r_dihedral_angle_3_deg	12.842
r_dihedral_angle_1_deg	5.607
r_angle_refined_deg	1.33
r_mcangle_it	1.286
r_mcbond_it	0.791
r_mcbond_other	0.789
r_angle_other_deg	0.753
r_chiral_restr	0.072

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.838
r_dihedral_angle_4_deg	13.259
r_dihedral_angle_3_deg	12.842
r_dihedral_angle_1_deg	5.607
r_angle_refined_deg	1.33
r_mcangle_it	1.286
r_mcbond_it	0.791
r_mcbond_other	0.789
r_angle_other_deg	0.753
r_chiral_restr	0.072
r_bond_refined_d	0.007
r_gen_planes_refined	0.005
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7017
Nucleic Acid Atoms
Solvent Atoms	661
Heterogen Atoms	118

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction

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.