1DV4

PARTIAL STRUCTURE OF 16S RNA OF THE SMALL RIBOSOMAL SUBUNIT FROM THERMUS THERMOPHILUS

X-RAY DIFFRACTION

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 407.1	α = 90
b = 407.1	β = 90
c = 176.008	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						M	MAD
2	1
3	1
4	1
5	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE BW7B	0.850, 1.300	EMBL/DESY, HAMBURG	BW7B
2	SYNCHROTRON	MPG/DESY, HAMBURG BEAMLINE BW6	0.850, 1.300	MPG/DESY, HAMBURG	BW6
3	SYNCHROTRON	CHESS BEAMLINE F1	0.850, 1.300	CHESS	F1
4	SYNCHROTRON	APS BEAMLINE 19-ID	0.850, 1.300	APS	19-ID
5	SYNCHROTRON	ESRF BEAMLINE ID2	0.850, 1.300	ESRF	ID2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	4.5	257	91.1	12.5		4	85991			-2.5

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	4.5		91.1			2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MIRAS	4.5	30	85991	85991

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	280
Nucleic Acid Atoms	3594
Solvent Atoms
Heterogen Atoms	82

Software

Software
Software Name	Purpose
SHARP	phasing
O	model building

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.