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PDBsum entry 2ct8
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Top Page protein dna_rna ligands Protein-protein interface(s) links
Ligase/RNA PDB id
2ct8
Contents
Protein chains
465 a.a.
DNA/RNA
Ligands
MSP ×2
Waters ×78
procheck   Generate full PROCHECK analyses

PROCHECK summary for 2ct8

Ramachandran plot

PROCHECK statistics

1. Ramachandran Plot statistics


                                         No. of
                                        residues     %-tage
                                         ------      ------
Most favoured regions      [A,B,L]          720       86.5%*  
Additional allowed regions [a,b,l,p]         97       11.7%          
Generously allowed regions [~a,~b,~l,~p]     15        1.8%          
Disallowed regions         [XX]               0        0.0%          
                                           ----      ------
Non-glycine and non-proline residues        832      100.0%

End-residues (excl. Gly and Pro)              6

Glycine residues                             50
Proline residues                             42
                                           ----
Total number of residues                    930

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            -0.30      
     Chi1-chi2 distribution          -0.38      
     Chi1 only                       -0.19      
     Chi3 & chi4                      0.32      
     Omega                            0.57      
                                                   0.03      
                                                  =====
Main-chain covalent forces:-
     Main-chain bond lengths          0.63      
     Main-chain bond angles           0.36      
                                                   0.47      
                                                  =====

     OVERALL AVERAGE                               0.21      
                                                  =====

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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