Phage abortive infection of Bacillus licheniformis ATCC 9800; Identification of the abiBL11 gene and localisation and sequencing of its promoter region

L. S P Tran, L. Szabó, T. Ponyi, L. Orosz, T. Sík, A. Holczinger

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The virulent bacteriophage BL11 infects almost all Bacillus licheniformis strains tested, including the industrial bacitracin-producing B. licheniformis 19. B. licheniformis ATCC 9800, however, was virtually insensitive to phage BL11 infection, and all of the few surviving progeny phages proved to be mutants. The phage-resistance mechanism was neither inhibition of adsorption, nor restriction or exclusion provided by a resident prophage, but was, instead, of another type. Phage BL11 adsorbed well on to ATCC 9800 cells, its DNA was injected, but replication of phage DNA was inhibited and the infected cells died. Thus, the mechanism of phage resistance was identified as abortive infection (AbiBL11). The so-called abiBL11 gene was identified on the chromosome of strain ATCC 9800 by Tn917PF1 transposon mutagenesis. Part of the abiBL11 gene from the phage-sensitive ATCC 9800::Tn917PFI was cloned. Gene-disruption analysis, based on Campbell- type integration, showed that a 0.3-kb EcoRI fragment contained the 5' end of abiBL11. The promoter region of abiBL11 was identified using promoter- and terminator-probe plasmids. The deduced sequence (206 amino acids) of the N- terminal part of abiBL11 showed no significant homology to known abortive- infection genes, but did show homology to a Saccharomyces cerevisiae gene coding for a serine/threonine protein kinase (RCK1).

Original languageEnglish
Pages (from-to)845-852
Number of pages8
JournalApplied Microbiology and Biotechnology
Volume52
Issue number6
Publication statusPublished - 1999

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Bacteriophages
Bacilli
Genetic Promoter Regions
Genes
Infection
DNA
Bacitracin
Prophages
Mutagenesis
Bacillus licheniformis
Protein-Serine-Threonine Kinases
Chromosomes
DNA Replication
Yeast
Adsorption
Saccharomyces cerevisiae
Amino acids
Amino Acid Sequence
Plasmids
Proteins

ASJC Scopus subject areas

  • Biotechnology
  • Microbiology
  • Bioengineering

Cite this

Phage abortive infection of Bacillus licheniformis ATCC 9800; Identification of the abiBL11 gene and localisation and sequencing of its promoter region. / Tran, L. S P; Szabó, L.; Ponyi, T.; Orosz, L.; Sík, T.; Holczinger, A.

In: Applied Microbiology and Biotechnology, Vol. 52, No. 6, 1999, p. 845-852.

Research output: Contribution to journalArticle

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