Top chemical compounds for concept: c_0520
# Observed top chemical compounds associated with the concept c_0520
#  mined from the 'HETATM' record lines within the wwPDB
#  coordinate files of this concept's usages. 
#   -------------------------------------------------------------c_0520
#   %Freq     Ligand/Chemical Compound
#   ------------------------------------------------------------------- 
    46.4      71 TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
    22.2      34 SO4 SULFATE ION
    20.3      31 MG MAGNESIUM ION
    19.0      29 ZN ZINC ION
    13.7      21 K POTASSIUM ION
    13.1      20 FE2 FE (II) ION
    10.5      16 FE FE (III) ION
    10.5      16 CL CHLORIDE ION
     7.8      12 NA SODIUM ION
     5.2       8 CD CADMIUM ION
     4.6       7 EPE 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
     4.6       7 CA CALCIUM ION
     3.3       5 GOL GLYCEROL
     2.6       4 MN3 MANGANESE (III) ION
     2.6       4 BU1 1,4-BUTANEDIOL
     2.6       4 ACY ACETIC ACID
#   ------------------------------------------------------------------- 
#   Notes: %Freq gives (as a percentage) the number of usages
#      of the concept in which the associated Chemical Compund or
#      Ligand was observed in the HETATM record.
#   -------------------------------------------------------------c_0520