Top chemical compounds for concept: c_0018

# Observed top chemical compounds associated with the concept c_0018
#  mined from the 'HETATM' record lines within the wwPDB
#  coordinate files of this concept's usages. 
#   -------------------------------------------------------------c_0018
#   %Freq     Ligand/Chemical Compound
#   ------------------------------------------------------------------- 
    66.7      12 CA CALCIUM ION
    50.0       9 SO4 SULFATE ION
     5.6       1 ZN ZINC ION
     5.6       1 PO4 PHOSPHATE ION
     5.6       1 NA SODIUM ION
     5.6       1 K21 4-[3-{1-(4-BENZYL)PIPERODINYL}PROPIONYL]-7-METHOXY-2,3,4,5-TERTRAHYDRO-1,4-BENZOTHIAZEPINE
#   ------------------------------------------------------------------- 
#   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_0018