1QGD

TRANSKETOLASE FROM ESCHERICHIA COLI

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.4		pH 6.4

Crystal Properties
Matthews coefficient	Solvent content
2.5	49

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 74.85	α = 90
b = 126	β = 90
c = 151.05	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	298	IMAGE PLATE	MARRESEARCH		1994-07-21	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	10	98.2	0.1	16.3	4.68		503703			23.6

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	1.97	97.1		0.323	4.3	3.29

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-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1TRK	1.9	10	104778	2132	97.5	0.132	0.176	RANDOM	18.2

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]
0.626			0.161		-0.75

RMS Deviations
Key	Refinement Restraint Deviation
p_transverse_tor	30.6
p_staggered_tor	15.9
p_scangle_it	8.001
p_scbond_it	5.936
p_planar_tor	4.3
p_mcangle_it	3.174
p_mcbond_it	2.684
p_multtor_nbd	0.247
p_singtor_nbd	0.171
p_xyhbond_nbd	0.154
p_chiral_restr	0.149
p_planar_d	0.037
p_angle_d	0.03
p_plane_restr	0.025
p_bond_d	0.014
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	10144
Nucleic Acid Atoms
Solvent Atoms	1065
Heterogen Atoms	64

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
REFMAC	refinement