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PDBsum entry 1pad

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Hydrolase/hydrolase inhibitor PDB id
1pad
Jmol
Contents
Protein chain
212 a.a.
Ligands
ACE-ALA-ALA-PHE-
ALA-0QE
Waters ×32
procheck   Generate full PROCHECK analyses

PROCHECK summary for 1pad

Ramachandran plot

PROCHECK statistics

1. Ramachandran Plot statistics


                                         No. of
                                        residues     %-tage
                                         ------      ------
Most favoured regions      [A,B,L]          131       75.3%** 
Additional allowed regions [a,b,l,p]         41       23.6%          
Generously allowed regions [~a,~b,~l,~p]      1        0.6%          
Disallowed regions         [XX]               1        0.6%*  
                                           ----      ------
Non-glycine and non-proline residues        174      100.0%

End-residues (excl. Gly and Pro)              5

Glycine residues                             28
Proline residues                             10
                                           ----
Total number of residues                    217


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            -1.01**
     Chi1-chi2 distribution          -0.71*     
     Chi1 only                       -0.35      
     Chi3 & chi4                      0.52      
     Omega                            0.67      
                                                  -0.20      
                                                  =====
Main-chain covalent forces:-
     Main-chain bond lengths          0.01      
     Main-chain bond angles          -0.55*     
                                                  -0.32      
                                                  =====

     OVERALL AVERAGE                              -0.23      
                                                  =====

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.