database citation
   |__experiment database
   |   |__efo
   |   |__orphanet
   |__feature database
   |   |__cdd
   |   |__cog
   |   |__deltamass
   |   |__eukaryotic linear motif resource
   |   |__gene ontology(+)
   |   |__interpro(+)
   |   |__ipfam
   |   |__mmdb
   |   |__protein modification ontology
   |   |__resid
   |   |__sequence ontology
   |   |__unimod
   |   |__wwpdb(+)
   |__interaction database
   |   |__agbase
   |   |__agi_locuscode
   |   |__ai
   |   |__alliance for cellular signaling
   |   |__alut
   |   |__aspgd
   |   |__bar
   |   |__bhf-ucl
   |   |__bind
   |   |__bindingdb
   |   |__biogrid
   |   |__bmrb
   |   |__cacao
   |   |__cgd
   |   |__chembl
   |   |__dip
   |   |__ecoliwiki
   |   |__evidence ontology
   |   |__gene ontology(+)
   |   |__genedb
   |   |__genemania
   |   |__gramene
   |   |__hpidb
   |   |__hprd
   |   |__i2d
   |   |__imex
   |   |__innatedb
   |   |__intact
   |   |__intenz
   |   |__irefindex
   |   |__matrixdb
   |   |__mbinfo
   |   |__mind
   |   |__mint
   |   |__mmdb
   |   |__molecular connections
   |   |__mpidb
   |   |__mtbbase
   |   |__parkinsonsuk-ucl
   |   |__pathways database(+)
   |   |__pombase
   |   |__primesdb
   |   |__protein ontology
   |   |__ri
   |   |__string
   |   |__topfind
   |   |__uniprot knowledge base(+)
   |   |__virhostnet
   |   |__wwpdb(+)
   |__literature database
   |   |__digital object identifier
   |   |__pubmed
   |   |__pubmed central
   |__participant database
   |   |__bioactive entity reference(+)
   |   |__brenda
   |   |__cabri
   |   |__cell ontology
   |   |__dflat
   |   |__gene database(+)
   |   |__kegg(+)
   |   |__ncbi taxonomy
   |   |__sequence database(+)
   |   |__sequence ontology
   |   |__tissue list
   |   |__uniprot taxonomy
   |__psi-mi
   |__source database
       |__3d repertoire
       |__alliance for cellular signaling
       |__bind
       |__biogrid
       |__cygd
       |__imex source(+)
       |__irefindex
       |__ntnu
       |__wwpdb(+)