5TC8

Crystal structure of human 5'-deoxy-5'-methylthioadenosine phosphorylase in complex with methylthio-DADMe-Immucillin-A

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1K27

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.5	295	Protein (15 mg/mL); Reservoir (0.2 M magnesium chloride, 0.1 M sodium citrate:citric acid (pH 5.5) and 40% (v/v) PEG 400)

Crystal Properties
Matthews coefficient	Solvent content
2.95	58.36

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 123.065	α = 90
b = 123.065	β = 90
c = 44.755	γ = 120

Symmetry
Space Group	P 3 2 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 315r		2014-08-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	1.54178	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	1.8	50	99.5	0.085	11.6	6.4		36094			13

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	1.8	1.83	94		0.563	2.61	4.4

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	1K27	1.8	25	34254	1832	99.5	0.1612	0.1602	0.1804	RANDOM	19.439

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]
-0.54	-0.27		-0.54		1.76

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.607
r_dihedral_angle_4_deg	18.137
r_dihedral_angle_3_deg	12.431
r_dihedral_angle_1_deg	5.791
r_mcangle_it	1.766
r_angle_refined_deg	1.504
r_mcbond_it	1.103
r_mcbond_other	1.086
r_angle_other_deg	0.926
r_chiral_restr	0.074

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.607
r_dihedral_angle_4_deg	18.137
r_dihedral_angle_3_deg	12.431
r_dihedral_angle_1_deg	5.791
r_mcangle_it	1.766
r_angle_refined_deg	1.504
r_mcbond_it	1.103
r_mcbond_other	1.086
r_angle_other_deg	0.926
r_chiral_restr	0.074
r_bond_refined_d	0.009
r_gen_planes_refined	0.005
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2109
Nucleic Acid Atoms
Solvent Atoms	185
Heterogen Atoms	70

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
Coot	model building
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.