Two self-splicing group I introns interrupt two late transcribed genes of prolate-headed Lactobacillus delbrueckii phage JCL1032

Two self-splicing group I introns interrupt two late transcribed genes of prolate-headed... Two group I introns were detected from the late gene region of the prolate-headed phage JCL1032 of Lactobacillus delbrueckii . Introns JCL-I1 and JCL-I2 interrupt orf602 and orf1868 encoding a phage terminase large subunit (TerL, 69.7 kDa) and a putative tape measure protein (TMP, 202 kDa), respectively. The introns JCL-I1 (226 bp) and JCL-I2 (322 bp) were efficiently self-spliced in vivo . Both introns were classified to the subgroup IA1 having all the conserved structures necessary for splicing, but lacking the ability to encode endonucleases or other gene products. The introns JCL-I1 and JCL-I2 shared restricted nucleotide sequence similarity with each other and with the group I terL intron of Lb. delbrueckii phage LL-H. No match was found for JCL-I1 in the homology searches. Instead, the primary sequence from the joining region of P8 and P7 to P9 of the intron JCL-I2 was homologous to the group I intron of Bacillus mojavensis ; the orf142 introns I1, I2 and I3 of Staphylococcus aureus phage Twort; the group I intron of phage Bastille ( Bacillus thuringiensis ); and to the group IA3 intron of Monomastix species. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Two self-splicing group I introns interrupt two late transcribed genes of prolate-headed Lactobacillus delbrueckii phage JCL1032

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Publisher
Springer-Verlag
Copyright
Copyright © 2004 by Springer-Verlag/Wien
Subject
LifeSciences
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-004-0329-4
Publisher site
See Article on Publisher Site

Abstract

Two group I introns were detected from the late gene region of the prolate-headed phage JCL1032 of Lactobacillus delbrueckii . Introns JCL-I1 and JCL-I2 interrupt orf602 and orf1868 encoding a phage terminase large subunit (TerL, 69.7 kDa) and a putative tape measure protein (TMP, 202 kDa), respectively. The introns JCL-I1 (226 bp) and JCL-I2 (322 bp) were efficiently self-spliced in vivo . Both introns were classified to the subgroup IA1 having all the conserved structures necessary for splicing, but lacking the ability to encode endonucleases or other gene products. The introns JCL-I1 and JCL-I2 shared restricted nucleotide sequence similarity with each other and with the group I terL intron of Lb. delbrueckii phage LL-H. No match was found for JCL-I1 in the homology searches. Instead, the primary sequence from the joining region of P8 and P7 to P9 of the intron JCL-I2 was homologous to the group I intron of Bacillus mojavensis ; the orf142 introns I1, I2 and I3 of Staphylococcus aureus phage Twort; the group I intron of phage Bastille ( Bacillus thuringiensis ); and to the group IA3 intron of Monomastix species.

Journal

Archives of VirologySpringer Journals

Published: Oct 1, 2004

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