1OB2

E. coli elongation factor EF-Tu complexed with the antibiotic kirromycin, a GTP analog, and Phe-tRNA

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.4		1.8M AMMONIUM SULPHATE, 10 MM MAGNESIUM CHLORIDE, 20 MM TRIS-MES, PH 6.4

Crystal Properties
Matthews coefficient	Solvent content
4.51	70

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 196.41	α = 90
b = 196.41	β = 90
c = 196.41	γ = 90

Symmetry
Space Group	P 41 3 2

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	MARRESEARCH		1996-06-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SRS BEAMLINE PX9.6		SRS	PX9.6

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	3.35	48	98.5	0.154	10.1	5		18794		-3	43

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	3.35	3.53	99.5		0.429	3	5.1

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	PDB ENTRY 1TTT	3.35	47.64	18794	963	97.8	0.22	0.22	0.265	RANDOM	41.6

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]
0.61			-0.3		-0.3

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	27.5
c_scangle_it	7.47
c_mcangle_it	6.78
c_scbond_it	4.99
c_mcbond_it	4.17
c_angle_deg	1.5
c_improper_angle_d	1.35
c_bond_d	0.009
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3035
Nucleic Acid Atoms	1662
Solvent Atoms
Heterogen Atoms	113

Software

Software
Software Name	Purpose
CNS	refinement
DENZO	data reduction
Agrovata	data scaling
AMoRE	phasing