Protein identifier mapping

Last edited: 2010-10-21

We have made a file which provides mappings between iRefIndex identifiers and popular external identifiers. The file is a tab delimited text file and the first row starting with the "#" provides the column headers.

File download location: ftp://ftp.no.embnet.org/irefindex/data/current/Mappingfiles/

The column descriptions:

Column number	Column name	Description
1	db	Source of the external identifier (e.g. UniProt, RefSeq)
2	acc	The external identifier (e.g. Q4U9M9)
3	entrezGeneid	Entrez gene id. This is provided only for RefSeq identifiers for other identifiers the value is -1 from this field.
4	irogid	Integer version redundant group identifier(e.g. 3156116, current maximum value=14005379, this is a MySQL int(11) field).
5	rogid	String version of the redundant object group (64 bit version of the hash digest of primary amino acid sequence with the NSBI taxonomy identifier appended at the end)
6	icrogid	Integer version of the canonical(1) redundant object group (A selected irogid to represent the canonical group)
7	crogid	String version of the canonical(1) redundant object group (A selected rogid to represent the canonical group)

(1) Please refer the following page for details on canonicalization process. http://irefindex.uio.no/wiki/Canonicalization