1SNC

THE CRYSTAL STRUCTURE OF THE TERNARY COMPLEX OF STAPHYLOCOCCAL NUCLEASE, CA2+, AND THE INHIBITOR PD*TP, REFINED AT 1.65 ANGSTROMS

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.17	43.34

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 48	α = 90
b = 48	β = 90
c = 63.5	γ = 90

Symmetry
Space Group	P 41

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		1.65	6	11332			0.161

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	25.6
p_staggered_tor	22
p_planar_tor	3.2
p_mcangle_it	1.82
p_scangle_it	1.52
p_scbond_it	1.47
p_mcbond_it	1.07
p_chiral_restr	0.157
p_planar_d	0.05
p_angle_d	0.037
p_plane_restr	0.02
p_bond_d	0.017
p_angle_deg
p_hb_or_metal_coord
p_singtor_nbd
p_multtor_nbd
p_xhyhbond_nbd
p_xyhbond_nbd
p_transverse_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1082
Nucleic Acid Atoms
Solvent Atoms	82
Heterogen Atoms	26

Software

Software
Software Name	Purpose
PROLSQ	refinement