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Antisense RNA mediates transcriptional processing in an archaebacterium, indicating a novel kind of RNase activity
Author(s) -
Stolt Pelte,
Zillig Wolfram
Publication year - 1993
Publication title -
molecular microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.857
H-Index - 247
eISSN - 1365-2958
pISSN - 0950-382X
DOI - 10.1111/j.1365-2958.1993.tb01178.x
Subject(s) - biology , antisense rna , rna , rnase p , lysogenic cycle , lytic cycle , primer extension , non coding rna , rnase h , ribonuclease iii , microbiology and biotechnology , transcription (linguistics) , gene , rna silencing , ribosomal rna , bacteriophage , genetics , rna interference , escherichia coli , virus , linguistics , philosophy
Summary Strains of the extremely halophilic archaebacterium Halobacterium salinarium that are lysogenic for the phage φH produce an antisense RNA transcript complementary to the first 151 nucleotides (nt) of the early lytic phage transcript T1. This is the first case of antisense control of gene expression in an archaebacterium. We show through transformation of H. salinarium that the antisense RNA functions in trans , rendering the early lytic phage transcript T1 susceptible to specific cleavage by an unidentified RNase of unique endonucleolytic activity. The single‐stranded ends of RNA are cut off at the ends of the 151 nt RNA duplex, removing the ribosomal binding sites from the first open reading frame of transcript T1 but without concominant digestion of the products.