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PDBsum entry 2a7u
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Top Page protein Protein-protein interface(s) links
Hydrolase PDB id
2a7u
Contents
Protein chains
22 a.a.
105 a.a.
procheck   Generate full PROCHECK analyses

PROCHECK summary for 2a7u

Ramachandran plot

PROCHECK statistics

1. Ramachandran Plot statistics


                                         No. of
                                        residues     %-tage
                                         ------      ------
Most favoured regions      [A,B,L]          100       86.2%*  
Additional allowed regions [a,b,l,p]         15       12.9%          
Generously allowed regions [~a,~b,~l,~p]      1        0.9%          
Disallowed regions         [XX]               0        0.0%          
                                           ----      ------
Non-glycine and non-proline residues        116      100.0%

End-residues (excl. Gly and Pro)              4

Glycine residues                              4
Proline residues                              3
                                           ----
Total number of residues                    127

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            -0.25      
     Chi1-chi2 distribution          -1.46**
     Chi1 only                       -0.62*     
     Chi3 & chi4                      0.26      
     Omega                            0.67      
                                                  -0.16      
                                                  =====
Main-chain covalent forces:-
     Main-chain bond lengths         -0.43      
     Main-chain bond angles          -0.69*     
                                                  -0.58*     
                                                  =====

     OVERALL AVERAGE                              -0.32      
                                                  =====

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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