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PDBsum entry 1a4g

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Hydrolase PDB id
1a4g
Jmol
Contents
Protein chains
390 a.a. *
Ligands
NAG ×2
ZMR ×2
Metals
_CA ×3
Waters ×492
* Residue conservation analysis
procheck   Generate full PROCHECK analyses

PROCHECK summary for 1a4g

Ramachandran plot

PROCHECK statistics

1. Ramachandran Plot statistics


                                         No. of
                                        residues     %-tage
                                         ------      ------
Most favoured regions      [A,B,L]          567       85.6%*  
Additional allowed regions [a,b,l,p]         92       13.9%          
Generously allowed regions [~a,~b,~l,~p]      3        0.5%          
Disallowed regions         [XX]               0        0.0%          
                                           ----      ------
Non-glycine and non-proline residues        662      100.0%

End-residues (excl. Gly and Pro)              4

Glycine residues                             80
Proline residues                             34
                                           ----
Total number of residues                    780


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            -0.59*     
     Chi1-chi2 distribution          -0.14      
     Chi1 only                       -0.18      
     Chi3 & chi4                      0.40      
     Omega                           -0.30      
                                                  -0.27      
                                                  =====
Main-chain covalent forces:-
     Main-chain bond lengths          0.58      
     Main-chain bond angles          -0.34      
                                                   0.05      
                                                  =====

     OVERALL AVERAGE                              -0.12      
                                                  =====

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.