The following is a description of FASTA headers for UniProtKB (including alternative isoforms), UniRef, UniParc and archived UniProtKB versions. NCBI's program formatdb (in particular its -o option) is compatible with the UniProtKB fasta headers.

  >db|UniqueIdentifier|EntryName ProteinName OS=OrganismName OX=OrganismIdentifier [GN=GeneName ]PE=ProteinExistence
  SV=SequenceVersion

**db** is 'sp' for UniProtKB/Swiss-Prot and 'tr' for UniProtKB/TrEMBL.

**UniqueIdentifier** is the primary accession number of the UniProtKB entry.

**EntryName** is the entry name of the UniProtKB entry.

**ProteinName** is the recommended name of the UniProtKB entry as annotated in the RecName field. For UniProtKB/TrEMBL entries without a RecName field, the SubName field is used. In case of multiple SubNames, the first one is used. The 'precursor' attribute is excluded, 'Fragment' is included with the name if applicable.

**OrganismName** is the scientific name of the organism of the UniProtKB entry.

**OrganismIdentifier** is the unique identifier of the source organism, assigned by the NCBI.

**GeneName** is the first gene name of the UniProtKB entry. If there is no gene name, OrderedLocusName or ORFname, the GN field is not listed.

**ProteinExistence** is the numerical value describing the evidence for the existence of the protein.

**SequenceVersion** is the version number of the sequence.

更多信息：https://www.uniprot.org/help/fasta-headers