1SYD

ENGINEERING ALTERNATIVE BETA-TURN TYPES IN STAPHYLOCOCCAL NUCLEASE

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.22	44.63

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 48.5	α = 90
b = 48.5	β = 90
c = 63.5	γ = 90

Symmetry
Space Group	P 41

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		1.7	8	2			0.184

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	24.8
p_staggered_tor	18.1
p_planar_tor	3
p_xhyhbond_nbd	0.171
p_singtor_nbd	0.164
p_multtor_nbd	0.156
p_chiral_restr	0.152
p_planar_d	0.036
p_angle_d	0.033
p_bond_d	0.016
p_plane_restr	0.015
p_angle_deg
p_hb_or_metal_coord
p_mcbond_it
p_mcangle_it
p_scbond_it
p_scangle_it
p_xyhbond_nbd
p_transverse_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1088
Nucleic Acid Atoms
Solvent Atoms	83
Heterogen Atoms	26

Software

Software
Software Name	Purpose
PROLSQ	refinement