2G5F

The structure of MbtI from Mycobacterium Tuberculosis, the first enzyme in the synthesis of Mycobactin, reveals it to be a salicylate synthase

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6	316	15% PEG 4000, 0.2M Immadazole/malate, pH 6.0, VAPOR DIFFUSION, SITTING DROP, temperature 316K

Crystal Properties
Matthews coefficient	Solvent content
2.11	41.8

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 51.82	α = 90
b = 163.37	β = 90
c = 194.93	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 4		2003-07-04	M	MAD
2	1	100	CCD	ADSC QUANTUM 315		2004-01-10

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4	0.9393	ESRF	ID14-4
2	SYNCHROTRON	ALS BEAMLINE 5.0.2	0.9796, 0.9797	ALS	5.0.2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	26			154253	154236	23.06	4.75

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.8	1.9	97.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	1.8	50	153352	153352	15321	99.4	0.208	0.208	0.205	0.24	Random	23.685

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]
-0.133			-0.294		0.427

RMS Deviations
Key	Refinement Restraint Deviation
c_mcbond_it	2
c_mcangle_it	1.5

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	13110
Nucleic Acid Atoms
Solvent Atoms	993
Heterogen Atoms	68

Software

Software
Software Name	Purpose
CNS	refinement
PDB_EXTRACT	data extraction
MOSFLM	data reduction
CCP4	data scaling
SHARP	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.