{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T21:36:04Z","timestamp":1777930564234,"version":"3.51.4"},"reference-count":25,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2013,2,12]],"date-time":"2013-02-12T00:00:00Z","timestamp":1360627200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["J VET Diagn Invest"],"published-print":{"date-parts":[[2013,3]]},"abstract":"<jats:p>The present report describes an atypical Brucella ovis strain (Bo10) isolated from the epididymis and testis of an infected ram. Macroscopic and microscopic lesions characteristic for the infection, including positive Brucella immunostaining, were observed within lesions in the genital organs. Compared to other isolates, strain Bo10 required an additional day (a total of 96 hr) of incubation to form visible colonies, showed a distinct carbon source utilization profile, agglutinated only weakly with rough (R) serum, but showed a high capacity for autoagglutination. Isolate Bo10 failed to produce the 1,071-bp fragment in the outer membrane protein ( omp) 31 gene\u2013based part of the \u201cBruce-ladder\u201d multiplex polymerase chain reaction system but did produce a 1,915-bp amplicon, thus presenting a profile similar to Brucella abortus. Sequence analysis of the 1,915-bp fragment revealed an 842-bp long insertion sequence (IS) 711 transposon element inserted into the promoter region of the omp31 gene, immediately upstream from the ribosome binding site (-10 box\/Pribnow box). Sodium dodecyl sulfate\u2013polyacrylamide gel electrophoresis of a whole-cell lysate showed the absence in Bo10 of the approximately 31-kDa protein fragment associated with omp31. The results demonstrate a natural inactivation of omp31 and, consequently, the absence of the Omp31 protein in this B. ovis isolate. The novel location of IS 711 within the genome of a naturally occurring B. ovis strain supports the hypothesis that IS 711 could be an active transposon in this Brucella species.<\/jats:p>","DOI":"10.1177\/1040638712474815","type":"journal-article","created":{"date-parts":[[2013,2,12]],"date-time":"2013-02-12T22:13:20Z","timestamp":1360707200000},"page":"234-238","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":2,"title":["Natural IS\n                    <i>711<\/i>\n                    insertion causing\n                    <i>omp31<\/i>\n                    gene inactivation in\n                    <i>Brucella ovis<\/i>"],"prefix":"10.1177","volume":"25","author":[{"given":"Mikl\u00f3s","family":"Gyuranecz","sequence":"first","affiliation":[{"name":"Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary (Gyuranecz, Kreizinger, 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