1SRN | pdb_00001srn

THE REFINED CRYSTAL STRUCTURE OF A FULLY ACTIVE SEMISYNTHETIC RIBONUCLEASE AT 1.8 ANGSTROMS RESOLUTION

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				THE MOTHER LIQUOR WAS 80 PER CENT SATURATED AMMONIUM SULFATE, PH 5.2.

Crystal Properties
Matthews coefficient	Solvent content
2.95	58.27

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 67.68	α = 90
b = 67.68	β = 90
c = 65.03	γ = 120

Symmetry
Space Group	P 32 2 1

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 (Depositor)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION		1.8	10	2			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_bond_d	0.024
p_angle_d

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	951
Nucleic Acid Atoms
Solvent Atoms	115
Heterogen Atoms	5

Software

Software
Software Name	Purpose
PROLSQ	refinement