Overproduction of mycobacterial ribosomal protein S13 induces catalase/peroxidase activity and hypersensitivity to isoniazid in Mycobacterium smegmatis

Eugenie Dubnau, Sonia Soares, Tian Jun Huang, William R. Jacobs

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A Bacillus Calmette Guerlin (BCG) DNA fragment was identified which conferred hypersensitivity to isoniazid (INH) upon Mycobacterium smegmaris (Ms) when present on a multicopy plasmid. The gene cluster present on this fragment contains the genes encoding ribosomal proteins L36 (rpmJ), S13 (rpsM), S11 (rpsK) and S4 (rpsD), as well as the gene encoding initiation factor-1 (infA), an open reading frame of unknown function (ORFX) and a putative promoter region. The rpsM gene, from either BCG or Ms is necessary and sufficient to produce the INH-hypersensitive phenotype in Ms, but the gene cluster has no effect on INH sensitivity when introduced into BCG on a multicopy plasmid. The presence of rpsM on a multicopy plasmid also causes an increase in catalase/peroxidase (Kat/Prx) activity in Ms, The overproduction of S13 may induce a stress response, resulting in increased expression of katG (encoding Kat/Prx) in Ms, thereby causing hypersensitivity to INH.

Original languageEnglish (US)
Pages (from-to)17-22
Number of pages6
JournalGene
Volume170
Issue number1
DOIs
StatePublished - Apr 17 1996

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5-chloro-3-tert-butyl-2'-chloro-4'-nitrosalicylanilide
Mycobacterium smegmatis
Ribosomal Proteins
Isoniazid
Mycobacterium
Catalase
Peroxidase
Hypersensitivity
Bacillus
Plasmids
Multigene Family
Genes
Peptide Initiation Factors
Genetic Promoter Regions
Open Reading Frames
Phenotype
DNA

Keywords

  • Catalase induction
  • Mycobacteria
  • Ribosomal protein

ASJC Scopus subject areas

  • Genetics

Cite this

Overproduction of mycobacterial ribosomal protein S13 induces catalase/peroxidase activity and hypersensitivity to isoniazid in Mycobacterium smegmatis. / Dubnau, Eugenie; Soares, Sonia; Huang, Tian Jun; Jacobs, William R.

In: Gene, Vol. 170, No. 1, 17.04.1996, p. 17-22.

Research output: Contribution to journalArticle

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