1STG | pdb_00001stg

TWO DISTINCTLY DIFFERENT METAL BINDING MODES ARE SEEN IN X-RAY CRYSTAL STRUCTURES OF STAPHYLOCOCCAL NUCLEASE-COBALT(II)-NUCLEOTIDE COMPLEXES

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				COMPOUND CRYSTAL SOAKED FOR ONE WEEK AT 277 K IN STABILIZING BUFFER COMPRISING 40% (WW) MPD IN 30 MM TRIS-CL PH 8.15, 50 UM COCL2, 100 UM POTASSIUM CITRATE AND 50 UM PDTP.

Crystal Properties
Matthews coefficient	Solvent content
2.18	43.62

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 48.21	α = 90
b = 48.21	β = 90
c = 63.26	γ = 90

Symmetry
Space Group	P 41

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION		1.7	6	11746		74	0.198	0.198	0.2022		42

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
x_dihedral_angle_d	25.13
x_angle_deg	3.12
x_improper_angle_d	1.3
x_bond_d	0.016
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1102
Nucleic Acid Atoms
Solvent Atoms	51
Heterogen Atoms	26

Software

Software
Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing