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PDBsum entry 1a15
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Top Page protein ligands Protein-protein interface(s) links
Chemokine PDB id
1a15
Contents
Protein chains
67 a.a. *
57 a.a. *
Ligands
SO4
Waters ×86
* Residue conservation analysis
procheck   Generate full PROCHECK analyses

PROCHECK summary for 1a15

Ramachandran plot

PROCHECK statistics

1. Ramachandran Plot statistics


                                         No. of
                                        residues     %-tage
                                         ------      ------
Most favoured regions      [A,B,L]           92       81.4%*  
Additional allowed regions [a,b,l,p]         18       15.9%          
Generously allowed regions [~a,~b,~l,~p]      1        0.9%          
Disallowed regions         [XX]               2        1.8%*  
                                           ----      ------
Non-glycine and non-proline residues        113      100.0%

End-residues (excl. Gly and Pro)              4

Glycine residues                              0
Proline residues                              7
                                           ----
Total number of residues                    124

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            -0.44      
     Chi1-chi2 distribution          -0.27      
     Chi1 only                        0.03      
     Chi3 & chi4                      0.37      
     Omega                            0.45      
                                                   0.00      
                                                  =====
Main-chain covalent forces:-
     Main-chain bond lengths         -0.02      
     Main-chain bond angles           0.09      
                                                   0.04      
                                                  =====

     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.

 

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