{"Protein" : 
  {"items" : ["UniProt", "EC-number", "MEROPS", "Synonyms"],
    "EC-number": {"mdtag" : "EC-number",
        "type" : "val",
        "tag"  : "ECNumber" },
    "UniProt" : {"mdtag" : "SwissProt-id",
       "type" : "link",
       "tag"  : "UniProt", 
       "link" : "http://www.uniprot.org/uniprot/%arg" },
    "MEROPS" : {"mdtag" : "MEROPS-id",
       "type" : "link",
       "tag"  : "MEROPS", 
       "link" : "http://merops.sanger.ac.uk/cgi-bin/merops.cgi?id=%arg;action=default" 
      },
    "Synonyms" : {"mdtag" : "Protein-name",
       "type" : "list",
       "tag"  : "Synonyms",
       "fun" : "ident"}
   },
 "Chemical" :
   {"items" : ["KEGG", "SID"  "Synonyms"],
    "KEGG" : {"mdtag" : "keggcpd",
      "type" : "link",
      "tag"  : "KEGG",
      "link" : "http://www.genome.jp/dbget-bin/www_bget?compound+%arg" },
    "SID" : {"mdtag" : "SID",
      "type" : "link",
      "tag"  : "PubChem",
      "link" : "http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=%arg" },
    "Synonyns" : {"mdtag" : "synonyms",
      "type" : "list",
      "tag"  : "Synonyms",
      "fun" : "ident"}
  },
 "Gene" :
   {"items" : ["EntrezGene", "Synonyms"],
    "EntrezGene-id" : {"mdtag" : "EntrezGene-id",
      "type" : "link",
      "tag"  : "EntrezGene",
      "link" : "http://www.ncbi.nlm.nih.gov/sites/entrez?db=gene&cmd=search&term=%arg" 
         },
    "Synonyns" : {"mdtag" : "Gene-name",
      "type" : "list",
      "tag"  : "Synonyms",
      "fun" : "ident"}
  }
}

