1RDS

CRYSTAL STRUCTURE OF RIBONUCLEASE MS (AS RIBONUCLEASE T1 HOMOLOGUE) COMPLEXED WITH A GUANYLYL-3',5'-CYTIDINE ANALOGUE

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.16	42.98

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 46.52	α = 90
b = 60.57	β = 90
c = 34.95	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

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		1.8	6	3			0.204

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	27.8
p_staggered_tor	16
p_scangle_it	5.76
p_scbond_it	4.48
p_mcangle_it	3.84
p_mcbond_it	2.8
p_planar_tor	2.4
p_chiral_restr	0.192
p_singtor_nbd	0.131
p_multtor_nbd	0.13
p_xhyhbond_nbd	0.119
p_planar_d	0.056
p_angle_d	0.04
p_bond_d	0.016
p_plane_restr	0.012
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	803
Nucleic Acid Atoms
Solvent Atoms	31
Heterogen Atoms	60

Software

Software
Software Name	Purpose
PROLSQ	refinement