9RSA

CRYSTAL STRUCTURE OF TWO COVALENT NUCLEOSIDE DERIVATIVES OF RIBONUCLEASE A

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.25	45.45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.75	α = 90
b = 64.1	β = 90
c = 73.15	γ = 90

Symmetry
Space Group	P 21 21 21

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		1.8	10			0.196

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	16.1
p_staggered_tor	15.4
p_scangle_it	3.61
p_planar_tor	3
p_scbond_it	2.37
p_mcangle_it	1.8
p_mcbond_it	1.18
p_xhyhbond_nbd	0.284
p_multtor_nbd	0.222
p_singtor_nbd	0.182
p_chiral_restr	0.166
p_planar_d	0.046
p_angle_d	0.031
p_bond_d	0.016
p_plane_restr	0.014
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	1902
Nucleic Acid Atoms
Solvent Atoms	181
Heterogen Atoms	23

Software

Software
Software Name	Purpose
PROFFT	refinement