Experiment: 1EK8

CRYSTAL STRUCTURE OF THE RIBOSOME RECYCLING FACTOR (RRF) FROM ESCHERICHIA COLI

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	287	0.1 M MES-NaOH, 10 % PEG 350 MME, 12 % PEG 400, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 287K

Crystal Properties
Matthews coefficient	Solvent content
2.29	46.38

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 48.064	α = 90
b = 48.064	β = 90
c = 142.273	γ = 120

Symmetry
Space Group	P 31 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	ADSC QUANTUM 4		1999-02-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.2		ALS	5.0.2

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	2.3	20	96.2	0.048	11	3.34	29485	8691			49.8

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)
	2.3	2.38	97.7		0.23		3.4	858

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	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		2.3	20	1	2	9017	8391	885	93.1	0.237	0.235	0.228	0.2406	0.297	0.3073	random

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]

RMS Deviations
Key	Refinement Restraint Deviation
c_bond_d	1.63437
c_angle_deg	0.010377

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1437
Nucleic Acid Atoms
Solvent Atoms	230
Heterogen Atoms	16

Software

Software
Software Name	Purpose
SHARP	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling