1KFJ

CRYSTAL STRUCTURE OF WILD-TYPE TRYPTOPHAN SYNTHASE COMPLEXED WITH L-SERINE

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.8		PEG 8000, pH 7.80

Crystal Properties
Matthews coefficient	Solvent content
2.57	52.05

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 183.23	α = 90
b = 59.679	β = 94.65
c = 67.462	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	CCD	MARRESEARCH		2001-02-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1		ESRF	ID14-1

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	35	96	0.07	10.1	2.6		64848		-3

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)
	1.8	1.9	86.8		0.337	2.86	2.1

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	1QOP	1.8	20	61544	3266	96.1	0.176	0.174	0.211	RANDOM	32.86

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]
-1.43		0.05	2.13		-0.7

RMS Deviations
Key	Refinement Restraint Deviation
p_scangle_it	8.515
p_scbond_it	5.444
p_mcangle_it	3.54
p_mcbond_it	2.334
p_chiral_restr	0.248
p_xyhbond_nbd	0.153
p_bond_d	0.029
p_angle_d
p_angle_deg
p_planar_d
p_hb_or_metal_coord
p_plane_restr
p_singtor_nbd
p_multtor_nbd
p_xhyhbond_nbd
p_planar_tor
p_staggered_tor
p_orthonormal_tor
p_transverse_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4893
Nucleic Acid Atoms
Solvent Atoms	343
Heterogen Atoms	23

Software

Software
Software Name	Purpose
XDS	data scaling
XSCALE	data scaling
CNS	refinement
REFMAC	refinement
XDS	data reduction
CNS	phasing