1RSN

RIBONUCLEASE (RNASE SA) (E.C.3.1.4.8) COMPLEXED WITH EXO-2',3'-CYCLOPHOSPHOROTHIOATE

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.35	47.72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 64.7	α = 90
b = 78.8	β = 90
c = 39.1	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray		IMAGE PLATE	MARRESEARCH		1992-11-26	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X11		EMBL/DESY, Hamburg	X11

Data Collection

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		2	10	13889			0.119

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
p_orthonormal_tor	13.8
p_staggered_tor	13.7
p_scangle_it	7.3
p_scbond_it	5.9
p_mcangle_it	3.8
p_planar_tor	3.1
p_mcbond_it	2.9
p_multtor_nbd	0.262
p_xhyhbond_nbd	0.215
p_singtor_nbd	0.178
p_chiral_restr	0.172
p_planar_d	0.078
p_angle_d	0.047
p_bond_d	0.021
p_plane_restr	0.018
p_angle_deg
p_hb_or_metal_coord
p_xyhbond_nbd
p_transverse_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1493
Nucleic Acid Atoms
Solvent Atoms	451
Heterogen Atoms	51

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PROLSQ	refinement