A GI number (for GenInfo Identifier, sometimes written in lower case, gi) is a simple series of digits that are assigned consecutively to each sequence record processed by NCBI. The GI number bears no resemblance to the Version number of the sequence record. Each time a sequence record is changed, it is assigned a new GI number.

Prefix

ncbigi

Alternative Prefixes

ncbi.gi NCBI_gi

Links

Homepage

Contact

Missing Contact

Pattern for Local Unique Identifiers

Local identifiers in GenInfo Identifier should match this regular expression:
^\d+$

Example Local Unique Identifier

568815597   Resolve

Pattern for CURIES

Compact URIs (CURIEs) constructed from GenInfo Identifier should match this regular expression:
^ncbigi:\d+$

Example CURIE

ncbigi:568815597

References

• Other https://www.ncbi.nlm.nih.gov/Sitemap/sequenceIDs.html
• Other https://www.ncbi.nlm.nih.gov/Class/MLACourse/Modules/Format/exercises/qa_accession_vs_gi.html

Contributors

• submitter Charles Tapley Hoyt   0000-0003-4423-4370   cthoyt

The metaregistry provides mappings between the Bioregistry and other registries. There are 2 mappings to external registries for ncbigi with 2 unique external prefixes.

Providers are various services that resolve CURIEs to URLs. The example CURIE ncbigi:568815597 is used to demonstrate the provides available for ncbigi. Generation of OLS and BioPortal URLs requires additional programmatic logic beyond string formatting.