2C44 | pdb_00002c44

Crystal Structure of E. coli Tryptophanase

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1AX4	PDB ENTRY 1AX4

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.9		1.6M AMMONIUM SULFATE, 0.5%(V/V)PEG400, 0.1M SODIUM HEPES PH 7.9

Crystal Properties
Matthews coefficient	Solvent content
2.96	58.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 215.51	α = 90
b = 215.51	β = 90
c = 107.56	γ = 90

Symmetry
Space Group	P 41 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	110	CCD	ADSC CCD	RH-COATED FUSED SILICA COLLIMATING MIRROR	2002-07-31	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X8C		NSLS	X8C

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	2.8	500	99.3	0.09	26.9	6.6		62257

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	2.8	2.91	98.8		0.24	8.7

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 1AX4	2.8	500	62257	3150	99.3	0.164	0.196	0.19	0.22	0.21	RANDOM	8.8

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]
-1.529			-1.529		3.058

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.895
r_dihedral_angle_3_deg	22.423
r_dihedral_angle_4_deg	21.001
r_dihedral_angle_1_deg	9.361
r_scangle_it	4.614
r_scbond_it	2.91
r_angle_refined_deg	2.683
r_mcangle_it	1.613
r_mcbond_it	0.847
r_nbtor_refined	0.34
r_nbd_refined	0.289
r_symmetry_vdw_refined	0.236
r_symmetry_hbond_refined	0.228
r_chiral_restr	0.187
r_xyhbond_nbd_refined	0.178
r_bond_refined_d	0.031
r_gen_planes_refined	0.01
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	14282
Nucleic Acid Atoms
Solvent Atoms	518
Heterogen Atoms	46

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
CNS	phasing