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General Information
Symbol
3S18
Species
D. melanogaster
Feature type
FlyBase ID
FBte0000266
Sequences and Components
Complete element (bp)
Terminal repeat (bp)
Component genes
Sequence Accessions
GenBank Nucleotide - A collection of sequences from several sources, including GenBank, RefSeq, TPA, and PDB.
Sequence Ontology (SO)
Insertions and Copy Number
Copy number and comments

Approximately 15 (FBrf0043377) or approximately 25 (FBrf0040134)

6 in euchromatin of Release 3 genome annotation, of which 4 are full length.

Approximately 25

Approximately 15-25

Target Site Duplication
Orthologs
Comments

The spatial and temporal expression patterns of fifteen families of retrotransposons are analysed during embryogenesis and are found to be conserved. Results suggest that all families carry cis-acting elements that control their spatial and temporal expression patterns.

Progeny derived from wa/wa4 heterozygotes demonstrate that ectopic recombination between paired 3S18 elements produces duplications and deficiencies.

Sequences homologous to 3S18 are present about 25 times in the Drosophila genome.

A retroviral-like transposable element. Described as an insertion associated with the wa4 mutation by Goldberg et al. (FBrf0040134) (as BEL), and as an insertion within the non-transcribed spacer of an rDNA repeat by Bell et al. (FBrf0043377) and Fabijanski and Pellegrini (FBrf0038558). In situ hybridization experiments indicate that 3S18 elements are located at about twenty-five sites throughout the genome and that their distribution differs from one strain to another. The ends of this element hybridize to each other.

Other Information
Etymology
External Crossreferences and Linkouts ( 6 )
Crossreferences
GenBank Nucleotide - A collection of sequences from several sources, including GenBank, RefSeq, TPA, and PDB.
Synonyms and Secondary IDs (13)
References (81)