5.2 PROSITE Field Definitions

The field codes found in a PROSITE flat file help to arrange the information for human readability and machine-based parsing. There are several PROSITE field codes found in an entry; each is represented with a two-letter abbreviation. Table 5-1 provides definitions and descriptions of these field codes.

Table 5-1. PROSITE field definitions

Field	Definition	Description
ID	Identification	The second item indicates the type of entry: PATTERN MATRIX RULE
AC	Accession number	PSnnnnn.
DT	Date	Date of entry or last modification of the entry.
DE	Short description	Descriptive information about the entry content.
PA	Pattern	The definition of a PROSITE pattern.
MA	Matrix/profile	The definition of a PROSITE profile/matrix.
RU	Rule	The definition of a PROSITE rule.
NR	Numerical results	This contain information relevant to the results of the scan with a pattern on the complete SWISS-PROT knowledgebase. The following qualifiers are used: /RELEASE /TOTAL /POSITIVE /UNKNOWN /FALSE_POS /FALSE_NEG /PARTIAL
CC	Comments	Various types of comments. The following qualifiers are used. /TAXO-RANGE /MAX-REPEAT /SITE /SKIP-FLAG /MATRIX_TYPE /SCALING_DB /AUTHOR /FT_KEY /FT_DESC
DR	Cross-references to SWISS-PROT	These are used as pointers to SWISS-PROT entries.
3D	Cross-references to PDB	These are used to list the Protein Data Bank entries.
DO	Pointer to the documentation file	This contains a pointer to the entry in the PROSITE documentation file that describes the entry.
//	Termination line	This designates the end of an entry.