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PDBsum entry 3i4m
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Top Page protein dna_rna metals Protein-protein interface(s) links
Transcription,transferase/DNA-RNA hybrid PDB id
3i4m
Contents
Protein chains
1429 a.a.
1125 a.a.
270 a.a.
187 a.a.
214 a.a.
88 a.a.
171 a.a.
137 a.a.
116 a.a.
65 a.a.
116 a.a.
47 a.a.
DNA/RNA
Metals
_ZN ×8
_MG
procheck   Generate full PROCHECK analyses

PROCHECK summary for 3i4m

Ramachandran plot

PROCHECK statistics

1. Ramachandran Plot statistics


                                         No. of
                                        residues     %-tage
                                         ------      ------
Most favoured regions      [A,B,L]         2204       62.8%** 
Additional allowed regions [a,b,l,p]       1080       30.8%          
Generously allowed regions [~a,~b,~l,~p]    163        4.6%          
Disallowed regions         [XX]              63        1.8%*  
                                           ----      ------
Non-glycine and non-proline residues       3510      100.0%

End-residues (excl. Gly and Pro)             46

Glycine residues                            239
Proline residues                            172
                                           ----
Total number of residues                   3967

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            -1.40**
     Chi1-chi2 distribution          -0.59*     
     Chi1 only                       -0.06      
     Chi3 & chi4                      0.50      
     Omega                            0.59      
                                                  -0.31      
                                                  =====
Main-chain covalent forces:-
     Main-chain bond lengths          0.62      
     Main-chain bond angles           0.35      
                                                   0.46      
                                                  =====

     OVERALL AVERAGE                              -0.00      
                                                  =====

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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