1K8Y

CRYSTAL STRUCTURE OF THE TRYPTOPHAN SYNTHASE BETA-SER178PRO MUTANT COMPLEXED WITH D,L-ALPHA-GLYCEROL-3-PHOSPHATE

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.8		pH 7.80

Crystal Properties
Matthews coefficient	Solvent content
2.6	52.72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 183.142	α = 90
b = 60.465	β = 94.63
c = 67.44	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		2000-11-11	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 Sym 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	1.5	45.6	95.1	0.078	9.76	2.991		111900		-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.5	1.6	91		0.246	2.93	2.045

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	PDB ENTRY 1QOP	1.5	20	106136	5720	95.14	0.173	0.171	0.209	RANDOM	22.526

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]
-0.97		-0.22	2.09		-1.16

RMS Deviations
Key	Refinement Restraint Deviation
p_scangle_it	7.701
p_scbond_it	5.022
p_mcangle_it	3.435
p_mcbond_it	2.326
p_chiral_restr	0.272
p_xyhbond_nbd	0.161
p_hb_or_metal_coord	0.116
p_bond_d	0.048
p_plane_restr	0.011
p_angle_d
p_angle_deg
p_planar_d
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	4877
Nucleic Acid Atoms
Solvent Atoms	658
Heterogen Atoms	26

Software

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