Bmmar1: A basal lineage of the Mariner family of transposable elements in the silkworm moth, Bombyx mori

Hugh M Robertson, Michele L. Asplund

Research output: Contribution to journalArticlepeer-review

Abstract

We describe a transposable element, called Bmmar1, from the genome of the silkworm moth, Bombyx mori. This element has features of the Tc1-mariner superfamily of transposable elements. Bmmar1 was first detected as a fragment in the 5' region of the larval serum protein (BmLSP) gene. Six genomic clones characterized each differed from a consensus sequence by 3-5 insertions and deletions, as well as an average of 2.3% in nucleotide sequence. The genome contains approximately 2400 copies of Bmmar1. Maximum parsimony phylogenetic analysis of the relationship of Bmmar1 and other members of the Tc1-mariner superfamily, based on their encoded transposase amino acid sequences, indicates that it represents a basal lineage of the mariner family. In particular Bmmar1 encodes a D,D37D motif thought to be the catalytic domain of mariner transposases. Bmmar1 considerably increases the known diversity of this widespread family of transposons. A new naming system is proposed for members of the family.

Original languageEnglish (US)
Pages (from-to)945-954
Number of pages10
JournalInsect Biochemistry and Molecular Biology
Volume26
Issue number8-9
DOIs
StatePublished - Sep 1 1996

Keywords

  • Bombyx mori
  • Mariner
  • Tc1
  • Transposon

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Insect Science

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