| Code |
Meaning |
Description |
| ID |
Identification |
Contains identifying information and characteristics of the sequence |
| AC |
Accession number(s) |
Release-to-release stable identifiers |
| DT |
Date |
When the entry was created, or when the sequence or annotation was modified |
| DE |
Description |
The name of the protein, often a function indicator |
| GN |
Gene name(s) |
The gene(s) that code for the protein |
| OS |
Organism species |
The organism from which the sequence is derived |
| OG |
Organelle |
If the sequence is non-chromosomal in origin |
| OC |
Organism classification |
The taxonomic class to which the organism belongs |
| OX |
Taxonomy x-reference(s) |
The NCBI TaxID for the OC line |
| RN |
Reference number |
The sequential number of the literature citation within the entry |
| RP |
Reference position |
The type of data, and the position in the sequence to which the citation refers |
| RC |
Reference comment(s) |
Comments relevant to the reference cited |
| RX |
Reference x-reference(s) |
Bibliographic cross-reference, such as PubMed ID |
| RA |
Reference authors |
Authors of the citation |
| RT |
Reference title |
Title of the citation |
| RL |
Reference location |
Source of the citation, such as journal, book, or unpublished data |
| CC |
Comments |
Free text notes about the protein |
| DR |
Database x-references |
Pointers to sources or related information for the entry |
| KW |
Keywords |
Indexable indicator of function, structure, or other information |
| FT |
Feature table |
Annotation of specific residues of the sequence |
| SQ |
Sequence header |
Marks the beginning of the sequence and provides summary data |
| (no code) |
Sequence data |
The sequence itself |
| // |
Termination line |
End of entry |
