{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T11:43:35Z","timestamp":1780487015086,"version":"3.54.1"},"reference-count":61,"publisher":"American Society for Microbiology","issue":"10","license":[{"start":{"date-parts":[[2006,10,1]],"date-time":"2006-10-01T00:00:00Z","timestamp":1159660800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["Appl Environ Microbiol"],"published-print":{"date-parts":[[2006,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n          <jats:p>\n            Molecular chaperones play an essential role in the folding of nascent chain polypeptides, as well as in the refolding and degradation of misfolded or aggregated proteins. They also assist in protein translocation and participate in stress functions. We identified a gene, designated\n            <jats:italic>tig<\/jats:italic>\n            , encoding a protein homologous to trigger factor (TF), a cytosolic ribosome-associated chaperone, in the genome of\n            <jats:italic>Listeria monocytogenes<\/jats:italic>\n            . We constructed a chromosomal \u0394\n            <jats:italic>tig<\/jats:italic>\n            deletion and evaluated the impact of the mutation on bacterial growth in broth under various stress conditions and on pathogenesis. The \u0394\n            <jats:italic>tig<\/jats:italic>\n            deletion did not affect cell viability but impaired survival in the presence of heat and ethanol stresses. We also identified the\n            <jats:italic>ffh<\/jats:italic>\n            gene, encoding a protein homologous to the SRP54 eukaryotic component of the signal recognition particle. However, a \u0394\n            <jats:italic>ffh<\/jats:italic>\n            deletion was not tolerated, suggesting that Ffh is essential, as it is in\n            <jats:italic>Bacillus subtilis<\/jats:italic>\n            and\n            <jats:italic>Escherichia coli<\/jats:italic>\n            . Thus, although dispensable for growth, TF is involved in the stress response of\n            <jats:italic>L. monocytogenes<\/jats:italic>\n            . The \u0394\n            <jats:italic>tig<\/jats:italic>\n            mutant showed no or very modest intracellular survival defects in eukaryotic cells. However, in vivo it showed a reduced capacity to persist in the spleens and livers of infected mice, revealing that TF has a role in the pathogenicity of\n            <jats:italic>L. monocytogenes<\/jats:italic>\n            .\n          <\/jats:p>","DOI":"10.1128\/aem.00624-06","type":"journal-article","created":{"date-parts":[[2006,10,4]],"date-time":"2006-10-04T17:50:39Z","timestamp":1159984239000},"page":"6623-6631","update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":24,"title":["A Homolog of\n            <i>Bacillus subtilis<\/i>\n            Trigger Factor in\n            <i>Listeria monocytogenes<\/i>\n            Is Involved in Stress Tolerance and Bacterial Virulence"],"prefix":"10.1128","volume":"72","author":[{"given":"Armelle","family":"Bigot","sequence":"first","affiliation":[{"name":"INSERM U-570, CHU Necker-Enfants Malades, 156, rue de Vaugirard, 75730 Paris Cedex 15, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eleonore","family":"Botton","sequence":"additional","affiliation":[{"name":"INSERM U-570, CHU Necker-Enfants Malades, 156, rue de Vaugirard, 75730 Paris Cedex 15, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Iharilalao","family":"Dubail","sequence":"additional","affiliation":[{"name":"INSERM U-570, CHU Necker-Enfants Malades, 156, rue de Vaugirard, 75730 Paris Cedex 15, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alain","family":"Charbit","sequence":"additional","affiliation":[{"name":"INSERM U-570, CHU Necker-Enfants Malades, 156, rue de Vaugirard, 75730 Paris Cedex 15, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"235","reference":[{"key":"e_1_3_2_2_2","unstructured":"Ausubel F. 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