db_xrefs

The /db_xref qualifier serves as a vehicle for linking DNA sequence records to other external databases.

The text below outlines the format and the present list of allowed database cross references. Inquiries about the addition of other database types should be made to one of the collaborating databases.

**Qualifier:**       /db_xref="_database_:_identifier_"
**Definition:**      database cross-reference: pointer to related information 
                 in another database                         
**Scope:**           all feature keys
**Value format:**    "_database_:_identifier_" where _database_ is the name of the
                 database containing related information, and 
                 _identifier_ is the internal identifier of the related 
                 information according to the naming conventions of the
                 cross-referenced database.

**Examples:**        

cross reference to GDB identifier:            /db_xref="GDB:39999"   
cross reference to Swiss-Prot entry:          /db_xref="Swiss-Prot:P12345" 

For all databases types 'Case' is important. All member databases of the International Collaboration (DDBJ, EMBL/EBI and GenBank/NCBI) may make recommendations for additions or removal of databases to this list at their convenience, and need not rely on the release cycle of the Feature Table documentation.

Database: Description of database, and type with example(s).

Presently the list includes: