Folbos, a new foldback element in rice.
A new class I foldback element, Folbos, has been discovered in O. sativa L. Its long terminal inverted repeats (IVRs) are 303 and 331 bp long and the left one encodes a short open reading frame of 76 codons. The IVRs consist of inner and outer domains, the latter built up of 6 tandem repeats of about 30 bp each. The central region is represented by 90 bp conservative stretch adjacent to a variable length (19-33 bp) A-tail, which in most cases includes the sequence 5'-TGACTT-3'. Folbos targets AT-rich regions and the insertion results in 7 bp target site duplications. Half of the copies found in annotated sequences of O. sativa japonica cv. Nipponbare are positioned in close proximity to (< 1kb) or within the transcribed regions, thus they have the potential to contribute to plant genome evolution.
Daskalova
Sasha M
SM
The Norman Borlaug Institute for Training and Research in Plant Sciences, The University of Leicester, UK. sashamd@asu.edu
Scott
Nigel W
NW
Elliott
Malcolm C
MC
D001483:Base Sequence; D004251:DNA Transposable Elements / Q000235:genetics*; D018744:DNA, Plant / Q000737:chemistry; D019143:Evolution, Molecular; D008969:Molecular Sequence Data; D012275:Oryza / Q000235:genetics*; D012091:Repetitive Sequences, Nucleic Acid / Q000235:genetics*; D020080:Tandem Repeat Sequences
D004251:DNA Transposable Elements; D018744:DNA, Plant