Experiment: 2GHJ

Crystal structure of folded and partially unfolded forms of Aquifex aeolicus ribosomal protein L20

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	294	50 mM Tris pH 7; 200 mM ammonium sulfate; 25 % PEG monomethyl ether, VAPOR DIFFUSION, HANGING DROP, temperature 294K

Crystal Properties
Matthews coefficient	Solvent content
2.18	43.65

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 44.914	α = 104.06
b = 45.217	β = 106.2
c = 67.06	γ = 97.76

Symmetry
Space Group	P 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	200	IMAGE PLATE	MAR scanner 345 mm plate	mirrors	2001-03-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM30A	0.97961	ESRF	BM30A

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	2.53	30	96.2	0.064	10.6	1.9	26849	21490	2	1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	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	SAD	THROUGHOUT	2.9	30	10246	10246	1884		0.22	0.22	0.22	0.2208	0.292	0.289	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]
0.745	-2.643	-11.009	1.677	-10.359	-2.422

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3238
Nucleic Acid Atoms
Solvent Atoms	50
Heterogen Atoms	30

Software

Software
Software Name	Purpose
MOSFLM	data reduction
CNS	refinement
CNS	phasing