{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,30]],"date-time":"2026-10-30T05:39:05Z","timestamp":1793338745147,"version":"4.5.0"},"reference-count":60,"publisher":"American Society for Microbiology","issue":"12","license":[{"start":{"date-parts":[[2010,12,1]],"date-time":"2010-12-01T00:00:00Z","timestamp":1291161600000},"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":["Infect Immun"],"published-print":{"date-parts":[[2010,12]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n          <jats:p>\n            <jats:italic>Yersinia pestis<\/jats:italic>\n            , the causative agent of plague, is one of the most virulent microorganisms known. The outer membrane protein X (OmpX) in\n            <jats:italic>Y. pestis<\/jats:italic>\n            KIM is required for efficient bacterial adherence to and internalization by cultured HEp-2 cells and confers resistance to human serum. Here, we tested the contribution of OmpX to disease progression in the fully virulent\n            <jats:italic>Y. pestis<\/jats:italic>\n            CO92 strain by engineering a deletion mutant and comparing its ability in mediating pneumonic plague to that of the wild type in two animal models. The deletion of OmpX delayed the time to death up to 48 h in a mouse model and completely attenuated virulence in a rat model of disease. All rats challenged with 1 \u00d7 10\n            <jats:sup>8<\/jats:sup>\n            CFU of the\n            <jats:italic>ompX<\/jats:italic>\n            mutant survived, compared to the 50% lethal dose (LD\n            <jats:sub>50<\/jats:sub>\n            ) of 1.2 \u00d7 10\n            <jats:sup>3<\/jats:sup>\n            CFU for the wild-type strain. Because murine serum is not bactericidal for the\n            <jats:italic>ompX<\/jats:italic>\n            mutant, the mechanism underlying the delay in time to death in mice was attributed to loss of adhesion\/internalization properties but not serum resistance. The rat model, which is most similar to humans, highlighted the critical role of serum resistance in disease. To resolve conflicting evidence for the role of\n            <jats:italic>Y. pestis<\/jats:italic>\n            lipopolysaccharide (LPS) and OmpX in serum resistance,\n            <jats:italic>ompX<\/jats:italic>\n            was cloned into\n            <jats:italic>Escherichia coli<\/jats:italic>\n            D21 and three isogenic derivatives engineered to have progressively truncated LPS core saccharides. OmpX-mediated serum resistance, adhesiveness, and invasiveness, although dependent on LPS core length, displayed these functions in\n            <jats:italic>E. coli<\/jats:italic>\n            , independently of other\n            <jats:italic>Yersinia<\/jats:italic>\n            proteins and\/or LPS. Also, autoaggregation was required for efficient OmpX-mediated adhesiveness and internalization but not serum resistance.\n          <\/jats:p>","DOI":"10.1128\/iai.00783-10","type":"journal-article","created":{"date-parts":[[2010,9,14]],"date-time":"2010-09-14T04:49:42Z","timestamp":1284439782000},"page":"5233-5243","update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":74,"title":["Outer Membrane Protein X (Ail) Contributes to\n            <i>Yersinia pestis<\/i>\n            Virulence in Pneumonic Plague and Its Activity Is Dependent on the Lipopolysaccharide Core Length"],"prefix":"10.1128","volume":"78","author":[{"given":"Anna M.","family":"Kolodziejek","sequence":"first","affiliation":[{"name":"Department of Microbiology, Molecular Biology, and Biochemistry, University of Idaho, Moscow, Idaho 83844-3052"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Darren R.","family":"Schnider","sequence":"additional","affiliation":[{"name":"School of Food Science, University of Idaho, Moscow, Idaho 83844-2312"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Harold N.","family":"Rohde","sequence":"additional","affiliation":[{"name":"School of Food Science, University of Idaho, Moscow, Idaho 83844-2312"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrzej J.","family":"Wojtowicz","sequence":"additional","affiliation":[{"name":"Department of Statistics, University of Idaho, Moscow, Idaho 83844-1104"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gregory A.","family":"Bohach","sequence":"additional","affiliation":[{"name":"Department of Microbiology, Molecular Biology, and Biochemistry, University of Idaho, Moscow, Idaho 83844-3052"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Scott A.","family":"Minnich","sequence":"additional","affiliation":[{"name":"School of Food Science, University of Idaho, Moscow, Idaho 83844-2312"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carolyn J.","family":"Hovde","sequence":"additional","affiliation":[{"name":"School of Food Science, University of Idaho, Moscow, Idaho 83844-2312"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"235","reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1099\/mic.0.2008\/017566-0"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.2353\/ajpath.2009.071168"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1128\/IAI.73.11.7324-7331.2005"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1128\/IAI.01125-07"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1128\/iai.65.9.3638-3643.1997"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1128\/IAI.73.4.2232-2244.2005"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1152\/ajplung.00127.2006"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1128\/IAI.71.7.3673-3681.2003"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.1128\/IAI.68.8.4523-4530.2000"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1128\/jb.91.3.953-962.1966"},{"key":"e_1_3_2_12_2","doi-asserted-by":"publisher","DOI":"10.1074\/jbc.274.8.5114"},{"key":"e_1_3_2_13_2","doi-asserted-by":"publisher","DOI":"10.1128\/JB.172.11.6568-6572.1990"},{"key":"e_1_3_2_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.febslet.2004.05.047"},{"key":"e_1_3_2_15_2","doi-asserted-by":"publisher","DOI":"10.1128\/IAI.00913-08"},{"key":"e_1_3_2_16_2","doi-asserted-by":"publisher","DOI":"10.1099\/mic.0.2007\/010918-0"},{"key":"e_1_3_2_17_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0969-2126(00)00143-X"},{"key":"e_1_3_2_18_2","doi-asserted-by":"publisher","DOI":"10.1128\/IAI.00219-07"},{"key":"e_1_3_2_19_2","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.0910497107"},{"key":"e_1_3_2_20_2","doi-asserted-by":"publisher","DOI":"10.1128\/iai.59.3.1106-1111.1991"},{"key":"e_1_3_2_21_2","doi-asserted-by":"publisher","DOI":"10.1128\/jb.174.1.84-91.1992"},{"key":"e_1_3_2_22_2","doi-asserted-by":"publisher","DOI":"10.1172\/JCI115972"},{"key":"e_1_3_2_23_2","doi-asserted-by":"publisher","DOI":"10.1128\/iai.62.11.5183-5186.1994"},{"key":"e_1_3_2_24_2","doi-asserted-by":"publisher","DOI":"10.1002\/psc.940"},{"key":"e_1_3_2_25_2","doi-asserted-by":"publisher","DOI":"10.1007\/978-0-387-72124-8_7"},{"key":"e_1_3_2_26_2","first-page":"3","volume":"12","year":"2006","unstructured":"Knirel, Y. 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