3TDE | pdb_00003tde

Crystal structure of S-adenosylmethionine synthetase Rv1392 from Mycobacterium tuberculosis

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3RV2	PDB ENTRY 3RV2

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.5	289	MytuD.01625.a.A1 PS00654 at 19.3 mL against JCSG + H8 focus screen 0.2 M NaCl, 0.1 M BisTris pH 5.2, 20% PEG 3350 with 20% ethylene glycol as cryo-protection reagent, crystal tracking ID 219374b3, VAPOR DIFFUSION, SITTING DROP, temperature 289K

Crystal Properties
Matthews coefficient	Solvent content
2.31	46.69

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 76.88	α = 90
b = 85.1	β = 90
c = 245.42	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	MARMOSAIC 300 mm CCD	Si(111) Double Crystal Monochrometer. Adjustable focusing mirrors in K-B geometry	2011-06-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-D	0.97934	APS	23-ID-D

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	1.85	50	99.7	0.088	13.77	6.2	138002	137558		-3	24.083

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	1.85	1.9	99.7		0.444	3.62

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	PDB ENTRY 3RV2	1.85	50	137558	6912	99.68	0.1654	0.1638	0.1636	0.1939	0.1938	RANDOM	19.0919

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]
0.9			-0.51		-0.38

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.736
r_dihedral_angle_4_deg	16.325
r_dihedral_angle_3_deg	12.238
r_dihedral_angle_1_deg	5.604
r_angle_refined_deg	1.23
r_chiral_restr	0.081
r_bond_refined_d	0.008
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	11169
Nucleic Acid Atoms
Solvent Atoms	1484
Heterogen Atoms	1

Software

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