1I6U

RNA-PROTEIN INTERACTIONS: THE CRYSTAL STRUCTURE OF RIBOSOMAL PROTEIN S8/RRNA COMPLEX FROM METHANOCOCCUS JANNASCHII

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	277	ammonium sulphate, sodium cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
4.79	74.34

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 121.687	α = 90
b = 121.687	β = 90
c = 137.975	γ = 90

Symmetry
Space Group	P 43 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	110	IMAGE PLATE	MARRESEARCH		2000-05-17	M	MAD
2	1	x-ray	110	IMAGE PLATE	MARRESEARCH		2000-06-20	M	MAD
3	1	x-ray	110	CCD	MARRESEARCH		2000-06-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM30A	0.97624,0.97933,0.97948	ESRF	BM30A
2	SYNCHROTRON	ESRF BEAMLINE BM30A	0.97949,0.97921,0.97435	ESRF	BM30A
3	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X11	0.91	EMBL/DESY, HAMBURG	X11

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	2.57	41.07	91.3	0.045	13	7.5	30271	30271			64.3

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)
	2.57	2.71	82.5		0.249		5.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	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	MAD	THROUGHOUT	2.6	41.07	2	29396	29179	1415	89.9	0.218	0.218	0.2206	0.251	0.2538	RANDOM	44.9

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]
3.77			3.77		-7.54

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	19
c_scangle_it	2.36
c_mcangle_it	2.21
c_scbond_it	1.53
c_mcbond_it	1.26
c_improper_angle_d	1.21
c_angle_deg	1.2
c_bond_d	0.006
c_bond_d_na
c_bond_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2028
Nucleic Acid Atoms	1580
Solvent Atoms	215
Heterogen Atoms	20

Software

Software
Software Name	Purpose
CNS	refinement
MOSFLM	data reduction
CCP4	data scaling
CNS	phasing

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.