A transposon-related palindromic repetitive sequence from C.elegans

David H. Dreyfus, Scott W. Emmons

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

A family of transposon-like sequences in the C. elegans genome is described. This family, termed the Tc6 family, consists mostly of conserved, 1.6 kb elements. Four Tc6 elements or partial elements have been cloned and the DNA sequences of three were determined. One appears to be a complete element of 1603 nucleotides, consisting of a palindrome of 765 nucleotides, with a central, non-palindromic region of 73 nucleotides. Another has an identical structure except for an internal deletion. A third is a partial element terminating at a probable internal restriction site used for cloning. A fourth clone contained portions of the Tc6 sequence juxtaposed to non-Tc6 sequences. All C. elegans strains examined contain 20-30 Tc6 elements. The ends of Tc6 elements are conserved and have sequence similarity to the ends of C. elegans transposons Tc1 and Tc3. The ends of Tc6 elements also have sequence similarity to the heptamer portion of the immunoglobulin and T-cell receptor recombination signal sequence, raising the possibility of wide phylogenetic conservation of the recombination mechanism. Tc6 elements also share sequence motifs with plant-pathogenic viroid RNA's, possibly indicative of a Tc6 RNA replicative phase.

Original languageEnglish (US)
Pages (from-to)1871-1877
Number of pages7
JournalNucleic Acids Research
Volume19
Issue number8
StatePublished - Apr 25 1991

Fingerprint

Nucleic Acid Repetitive Sequences
Nucleotides
RNA
Genetic Recombination
Viroids
T-cells
Conserved Sequence
Cloning
DNA sequences
Protein Sorting Signals
T-Cell Antigen Receptor
Immunoglobulins
Organism Cloning
Conservation
Recombination
Clone Cells
Genes
Genome
Internal
Palindrome

ASJC Scopus subject areas

  • Genetics
  • Statistics, Probability and Uncertainty
  • Applied Mathematics
  • Health, Toxicology and Mutagenesis
  • Toxicology
  • Genetics(clinical)

Cite this

A transposon-related palindromic repetitive sequence from C.elegans. / Dreyfus, David H.; Emmons, Scott W.

In: Nucleic Acids Research, Vol. 19, No. 8, 25.04.1991, p. 1871-1877.

Research output: Contribution to journalArticle

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