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NCBI Taxonomy - JSON

NCBI Taxonomy (National Center for Biotechnology Information Taxonomy) is a database that systematically organizes the classification and nomenclature of all organisms registered in public sequence databases, maintained by the National Center for Biotechnology Information in the United States. It currently covers approximately 10% of described species on Earth and plays a crucial role in linking genetic sequence data with biological classification. The database hierarchically organizes major organism groups including Archaea, Bacteria, Eukaryota, and Viruses, and is widely used worldwide as a foundation for biomedical research and bioinformatics analysis.

biological classification database bioinformatics gene sequences phylogenetics NCBI

[
  {
    "code": "2157",
    "slug": "archaea",
    "name": "Archaea",
    "description": "A domain of prokaryotic organisms distinct from bacteria, comprising single-celled organisms adapted to extreme environments.",
    "taxonomyId": 2157,
    "rank": "domain",
    "lineage": "cellular organisms"
  },
  {
    "code": "2",
    "slug": "bacteria",
    "name": "Bacteria",
    "description": "The most diverse and ubiquitously distributed domain of prokaryotic organisms.",
    "taxonomyId": 2,
    "rank": "domain",
    "lineage": "cellular organisms"
  },
  {
    "code": "2759",
    "slug": "eukaryota",
    "name": "Eukaryota",
    "description": "A domain of organisms whose cells contain a membrane-bound nucleus.",
    "taxonomyId": 2759,
    "rank": "domain",
    "lineage": "cellular organisms"
  },
  {
    "code": "10239",
    "slug": "viruses",
    "name": "Viruses",
    "description": "Non-cellular infectious agents that depend on host cells for replication.",
    "taxonomyId": 10239,
    "rank": "superkingdom",
    "lineage": "root"
  },
  {
    "code": "28384",
    "slug": "other-sequences",
    "name": "Other sequences",
    "description": "A category containing non-organismal sequence data such as artificial sequences, plasmids, and transposons.",
    "taxonomyId": 28384,
    "rank": "no rank",
    "lineage": "other entries"
  },
  {
    "code": "12908",
    "slug": "unclassified-sequences",
    "name": "Unclassified sequences",
    "description": "A category containing sequences that cannot be assigned to specific taxonomic groups or derived from environmental samples.",
    "taxonomyId": 12908,
    "rank": "no rank",
    "lineage": "unclassified entries"
  }
]