Cited by 1,204Bioinformatics and Genomic NetworksMicrobial Metabolic Engineering and BioproductionGenomics and Phylogenetic Studies

The MetaCyc database of metabolic pathways and enzymes and the BioCyc collection of Pathway/Genome Databases

Open access
Caspi, Ron, Altman, Tomer, Billington, Richard, Dreher, Kate, Foerster, Hartmut, Fulcher, Carol A., Holland, Timothy A., Keseler, Ingrid M. +12 more·2014·Nucleic Acids Research

Abstract

The MetaCyc database (MetaCyc.org) is a comprehensive and freely accessible database describing metabolic pathways and enzymes from all domains of life. MetaCyc pathways are experimentally determined, mostly small-molecule metabolic pathways and are curated from the primary scientific literature. MetaCyc contains >2100 pathways derived from >37,000 publications, and is the largest curated collection of metabolic pathways currently available. BioCyc (BioCyc.org) is a collection of >3000 organism-specific Pathway/Genome Databases (PGDBs), each containing the full genome and predicted metabolic network of one organism, including metabolites, enzymes, reactions, metabolic pathways, predicted operons, transport systems and pathway-hole fillers. Additions to BioCyc over the past 2 years include YeastCyc, a PGDB for Saccharomyces cerevisiae, and 891 new genomes from the Human Microbiome Project. The BioCyc Web site offers a variety of tools for querying and analysis of PGDBs, including Omics Viewers and tools for comparative analysis. New developments include atom mappings in reactions, a new representation of glycan degradation pathways, improved compound structure display, better coverage of enzyme kinetic data, enhancements of the Web Groups functionality, improvements to the Omics viewers, a new representation of the Enzyme Commission system and, for the desktop version of the software, the ability to save display states.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1093/nar/gkt1103

Cites

75 of 75 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Caspi, R., Altman, T., Billington, R., Dreher, K., Foerster, H., Fulcher, C. A., Holland, T. A., Keseler, I. M., Kothari, A., Kubo, A., Krummenacker, M., Latendresse, M., Mueller, L. A., Ong, Q., Paley, S., Subhraveti, P., Weaver, D. S., Weerasinghe, D., Zhang, P., & Karp, P. D.
Affiliations
SRI International (US)
Corresponding author
Karp, Peter D.
Venue
Nucleic Acids Research
Published
2013-11-12
Volume
42
Issue
D1
Pages
D459-D471
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W4230770774
Cited by
1,204
References
75
Citations by year
2026: 71 · 2025: 83 · 2024: 78 · 2023: 85 · 2022: 94 · 2021: 75 · 2020: 68 · 2019: 73 · 2018: 77 · 2017: 146 · 2016: 155 · 2015: 154 · 2014: 42 · 2013: 2
FWCI
52.55
Type
journal article
Language
en
Open access
Locations
  • Nucleic Acids Research (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
Funders
  • U.S. Department of Energy (DESC0004878)
  • National Institute of General Medical Sciences (GM080746, GM077678, GM75742, R01GM080746, R01GM077678, U24GM077678, R01GM075742, U24GM088849, GM088849)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioinformatics and Genomic Networks
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
Keywords
MetaCyc, BioCyc, pathway/genome databases, metabolic pathways, metabolic enzymes, metabolic networks, genome-scale metabolic models, pathway curation, Saccharomyces cerevisiae, Human Microbiome Project, atom mapping, comparative genomics, metabolites, transport systems, operon
MeSH terms
Enzymes, Kinetics, Polysaccharides, Software, Genome, Internet, Metabolic Networks and Pathways, Databases, Chemical, Gene Ontology

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review