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PDBsum entry 1tus
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Serine proteinase inhibitor
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PDB id
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1tus
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Generate full PROCHECK analyses
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PROCHECK summary for 1tus
Ramachandran plot
PROCHECK statistics
1. Ramachandran Plot statistics
No. of
residues %-tage
------ ------
Most favoured regions [A,B,L] 24 53.3%**
Additional allowed regions [a,b,l,p] 18 40.0%
Generously allowed regions [~a,~b,~l,~p] 3 6.7%
Disallowed regions [XX] 0 0.0%
---- ------
Non-glycine and non-proline residues 45 100.0%
End-residues (excl. Gly and Pro) 4
Glycine residues 4
Proline residues 3
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Total number of residues 56
Based on an analysis of 118 structures of resolution of at least 2.0 Angstroms and R-factor no greater than 20.0 a good
quality model would be expected to have over 90% in the most favoured regions [A,B,L].
2. G-Factors
Average
Parameter Score Score
--------- ----- -----
Dihedral angles:-
Phi-psi distribution -1.26**
Chi1-chi2 distribution -1.46**
Chi1 only -0.58*
Chi3 & chi4 -0.09
Omega -1.90**
-1.32**
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Main-chain covalent forces:-
Main-chain bond lengths 0.63
Main-chain bond angles 0.02
0.28
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OVERALL AVERAGE -0.67*
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G-factors provide a measure of how unusual, or out-of-the-ordinary, a property is.
Values below -0.5* - unusual
Values below -1.0** - highly unusual
Important note: The main-chain
bond-lengths and bond angles are compared with
the Engh & Huber (1991) ideal values derived
from small-molecule data. Therefore, structures
refined using different restraints may show
apparently large deviations from normality.
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