1APA

X-RAY STRUCTURE OF A POKEWEED ANTIVIRAL PROTEIN, CODED BY A NEW GENOMIC CLONE, AT 0.23 NM RESOLUTION. A MODEL STRUCTURE PROVIDES A SUITABLE ELECTROSTATIC FIELD FOR SUBSTRATE BINDING.


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 47.1 α = 90
b = 116.3 β = 90
c = 49.6 γ = 90
Symmetry
Space Group P 21 21 2

Refinement

Statistics
Structure Solution Method Refinement High Resolution Refinement Low Resolution Cut-off Sigma (I) Cut-off Sigma (F) Number of Reflections (All) Number of Reflections (Observed) Number of Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work R-Free R-Free Selection Details
-- 2.3 -- -- -- -- -- -- -- -- 0.172 0.172 -- --
RMS Deviations
Key Refinement Restraint Deviation
x_bond_d 0.019
x_angle_deg 2.2
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2054
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 95

Software

Computing
Computing Package Purpose
X-PLOR Structure Solution
X-PLOR Structure Refinement
Software
Software Name Purpose
X-PLOR refinement
X-PLOR model building