2RHG | pdb_00002rhg

Tryptophan synthase complexed with IGP, pH 7.0, internal aldimine

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	293	Protein: 50 mM Bicine pH 7.8, 10 mM Na-EDTA, 1 mM DTE, 20 uM PLP. Reservoir: 50 mM Bicine pH 7.8, 5 mM DTE, 5 mM Na-EDTA, 0.1 M PLP, 2 mM spermine, 2 mM NaN3, 8-12% PEG8000. Crystal soaked in 15% PEG8000, 20% glycerol, 23 mM IGP, pH controlled at pH 9.0 before flash-cooling, VAPOR DIFFUSION, HANGING DROP, temperature 293K, pH 7.0

Crystal Properties
Matthews coefficient	Solvent content
2.57	52.16

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 183.654	α = 90
b = 59.573	β = 94.71
c = 67.547	γ = 90

Symmetry
Space Group	C 1 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	IMAGE PLATE	MAR scanner 345 mm plate		1999-12-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE BW7B		EMBL/DESY, HAMBURG	BW7B

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	1.9	50	69.8	0.062	10.8	2	76750	76750		-3	15.2

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	1.9	1.95	74.3		0.175	4.5	1.5	3174

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	FOURIER SYNTHESIS	THROUGHOUT	2	19.99	40137	1693	68.6	0.212	0.212	0.2291	0.239	0.2282	RANDOM	26.5

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]
-5.63		-1.49	11.06		-5.43

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	22
c_angle_deg	1.2
c_improper_angle_d	0.81
c_bond_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4593
Nucleic Acid Atoms
Solvent Atoms	273
Heterogen Atoms	35

Software

Software
Software Name	Purpose
CNS	refinement
MAR345dtb	data collection
XDS	data reduction
XSCALE	data scaling
CNS	phasing