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

Identifier Space Owner

National Center for Biotechnology Information

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

A summary of the relations in the Bioregistry schema can be found here.

Has URI collision with (bioregistry.schema:0000016 )

This resource shares one or more URI format strings with genbank .

Therefore, when generating an extended prefix map, ncbigi, its CURIE prefix synonyms, and its URI prefix synonyms are merged into the record for genbank . If you believe that these are two distinct semantic spaces and should not be merged, please open a new issue on the Bioregistry issue tracker for discussion.

The metaregistry provides mappings between the Bioregistry and other registries. There are 4 mappings to external registries for this resource with 4 unique external prefixes.

A provider turns a local unique identifiers from a resource into a URI. Many providers are also resolvable as URLs (i.e., they can be used in a web browser).

The local unique identifier 568815597 is used to demonstrate the providers available for GenInfo Identifier. A guide for curating additional providers can be found here.