PubChem

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PubChem is a

PubChem was released in 2004 as a component of the Molecular Libraries Program (MLP) of the NIH. As of November 2015, PubChem contains more than 150 million depositor-provided substance descriptions, 60 million unique chemical structures, and 225 million biological activity test results (from over 1 million assay experiments performed on more than 2 million small-molecules covering almost 10,000 unique protein target sequences that correspond to more than 5,000 genes). It also contains RNA interference (RNAi) screening assays that target over 15,000 genes.[3]

As of August 2018, PubChem contains 247.3 million substance descriptions, 96.5 million unique chemical structures, contributed by 629 data sources from 40 countries. It also contains 237 million bioactivity test results from 1.25 million biological assays, covering >10,000 target protein sequences.^[4]

As of 2020, with data integration from over 100 new sources, PubChem contains more than 293 million depositor-provided substance descriptions, 111 million unique chemical structures, and 271 million bioactivity data points from 1.2 million biological assays experiments.^[5]

Databases

PubChem consists of three dynamically growing primary databases. As of 5 November 2020 (number of BioAssays is unchanged):

• Compounds, 111 million entries^[5] (up from 94 million entries in 2017^[4]), contains pure and characterized chemical compounds.^[6]
• Substances, 293 million entries
  complexes
  and uncharacterized substances.
• BioAssay,
  bioactivity results from 1.25 million^[9] (up from 6,000 in Sept. 2014^[10]) high-throughput screening
  programs with several million values.

Each hit provides information about synonyms, chemical properties, chemical structure including SMILES and InChI strings, bioactivity, and links to structurally related compounds and other NCBI databases like PubMed.

In the text search form the database fields can be searched by adding the field name in square brackets to the search term. A numeric range is represented by two numbers separated by a colon. The search terms and field names are case-insensitive. Parentheses and the

Example (

0:500[mw] 0:5[hbdc] 0:10[hbac] -5:5[logp]

Database fields

See also

• Chemical database
  • CAS Common Chemistry - run by the American Chemical Society
  • Comparative Toxicogenomics Database - run by North Carolina State University
  • ChEMBL - run by European Bioinformatics Institute
  • ChemSpider - run by UK's Royal Society of Chemistry
  • DrugBank - run by the University of Alberta
  • IUPAC
    - run by Swiss-based International Union of Pure and Applied Chemistry (IUPAC)
  • Moltable - run by India's National Chemical Laboratory
  • PubChem - run by the National Institute of Health, USA
  • BindingDB - run by the University of California, San Diego
  • SCRIPDB - run by the University of Toronto, Canada
  • National Center for Biotechnology Information (NCBI) - run by the National Institute of Health, USA
  • Entrez - run by the National Institute of Health, USA
  • GenBank - run by the National Institute of Health, USA

References

External links

Wikidata has the properties:

• PubChem CID (P662) (see uses)
• PubChem Substance ID (SID) (P2153) (see uses)
• PubChem BioAssay ID (AID) (P2874) (see uses)

Scholia has a profile for PubChem (Q278487).

• Official website