spacer
spacer

PDBsum entry 2c7a
Go to PDB code: 
Top Page protein dna_rna metals Protein-protein interface(s) links
Receptor/DNA PDB id
2c7a
Contents
Protein chains
78 a.a.
DNA/RNA
Metals
_ZN ×4
Waters ×148
procheck   Generate full PROCHECK analyses

PROCHECK summary for 2c7a

Ramachandran plot

PROCHECK statistics

1. Ramachandran Plot statistics


                                         No. of
                                        residues     %-tage
                                         ------      ------
Most favoured regions      [A,B,L]          114       87.0%*  
Additional allowed regions [a,b,l,p]         16       12.2%          
Generously allowed regions [~a,~b,~l,~p]      1        0.8%          
Disallowed regions         [XX]               0        0.0%          
                                           ----      ------
Non-glycine and non-proline residues        131      100.0%

End-residues (excl. Gly and Pro)              2

Glycine residues                             18
Proline residues                              4
                                           ----
Total number of residues                    155

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            -0.27      
     Chi1-chi2 distribution          -0.53*     
     Chi1 only                        0.12      
     Chi3 & chi4                      0.42      
     Omega                           -0.58*     
                                                  -0.29      
                                                  =====
Main-chain covalent forces:-
     Main-chain bond lengths          0.54      
     Main-chain bond angles           0.31      
                                                   0.41      
                                                  =====

     OVERALL AVERAGE                              -0.01      
                                                  =====

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.

 

spacer
spacer