2.6 EMBL Field Definitions

The field codes found in EMBL sequence flat files are used to help organize the information for human readability and machine-based parsing. There are several field codes found in an EMBL sequence flat file, and they are designated with a two-letter abbreviation. Table 2-2 summarizes the content of each field code.

Table 2-2. EMBL field definitions

Line code	Content
ID	Identification
AC	Accession number(s)
SV	New sequence identifier
DT	Date
DE	Description
KW	Keyword
OS	Organism species
OC	Organism classification
OG	Organelle
RN	Reference number
RC	Reference comment(s)
RP	Reference positions
RX	Reference cross-reference(s)
RA	Reference authors
RT	Reference title
RL	Reference location
DR	Database cross-references
FH	Feature table header
FT	Feature table data
CC	Comments or notes
XX	Spacer line
SQ	Sequence header
	(Blanks) Sequence data
//	Termination line