Alternative name: L1Base2
Contains putatively active LINE-1 insertions residing in human and rodent genomes: intact in the two open reading frames (ORFs), full length L1s (FLI-L1s) and b) L1s with intact ORF2 but disrupted ORF1 (ORF2-L1s). L1Base includes the full-length (>6000 bp) non-intact L1s (FLnI-L1s). L1Base can be searched via the MySQL-driven query system by using criteria, such as conservation of the functional sites important for activity, chromosomal localization and families. The database can also be searched by executing Blastn-based queries with a user-specified L1 sequence.