Disease (1)   
   OMIM (1)   
Drug (4)   
   KEGG DRUG (4)   
Chemical reaction (1)   
   KEGG ENZYME (1)   
Genome (1)   
   KEGG GENOME (1)   
Gene (12)   
   KEGG ORTHOLOGY (1)   
   NCBI-Gene (1)   
   NCBI-GI (6)   
   UNIGENE (1)   
   HGNC (1)   
   HPRD (1)   
   ENSEMBL-HSA (1)   
Protein sequence (9)   
   UniProt (1)   
   RefSeq(pep) (2)   
   IPI (6)   
DNA sequence (8)   
   RefSeq(nuc) (2)   
   GenBank (3)   
   EMBL (3)   
Protein domain (2)   
   Pfam (2)   
All databases (38)