An unusually compact retrotransposon in maize

Unlike any other known plant transposon, the maize transposable element Bs1 is similar to the retrotransposons previously described in yeast and Drosophila. Bs1 is bounded by 302 bp identical long terminal repeats (LTRs), and it contains open reading frames with apparent amino acid sequence similari...

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Bibliographic Details
Published in:Plant molecular biology 1989-06, Vol.12 (6), p.633-642
Main Authors: JOHNS, M. A, BABCOCK, M. S, FUERSTENBERG, S. M, FUERSTENBERG, S. I, FREELING, M, SIMPSON, R. B
Format: Article
Language:English
Subjects:
acide amine
amino acids
aminoacidos
Biological and medical sciences
cell structure
estructura celular
Fundamental and applied biological sciences. Psychology
Genes. Genome
Molecular and cellular biology
Molecular genetics
structure cellulaire
zea mays
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Summary:Unlike any other known plant transposon, the maize transposable element Bs1 is similar to the retrotransposons previously described in yeast and Drosophila. Bs1 is bounded by 302 bp identical long terminal repeats (LTRs), and it contains open reading frames with apparent amino acid sequence similarity to reverse transcriptase and other retroviral pol gene enzymes. Bs1 is 3203 bp long, very short for a retrotransposon, and the apparent organization of its genetic information is significantly different from any previously described element. Although transcription of Bs1 has not been observed, it is probably an active transposon, since it was observed to transpose in a maize line that contains only two sequences hybridizing to Bs1 probes. Both of these sequences share 35 restriction sites with the cloned Bs1 element, and thus must be very similar or identical with it.
ISSN:0167-4412
1573-5028
DOI:10.1007/BF00044154