{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T19:05:53Z","timestamp":1783710353318,"version":"3.55.0"},"reference-count":44,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2021,1,8]],"date-time":"2021-01-08T00:00:00Z","timestamp":1610064000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["2017YFD0500305, 2017YFD0500901"],"award-info":[{"award-number":["2017YFD0500305, 2017YFD0500901"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Cell. Infect. Microbiol."],"abstract":"<jats:p>In <jats:italic>Brucella<\/jats:italic> spp., the type IV secretion system (T4SS) is essential for bacterial intracellular survival and inhibition of the host innate immune response. The <jats:italic>Brucella<\/jats:italic> T4SS secretes 15 different effectors to escape host immunity and promote intracellular replication. Among them, BspF has a GNAT-family acetyltransferase domain, implying its acetyltransferase activity. We confirmed that BspF has acetyltransferase activity (data not shown) and de-crotonyltransferase activity. However, BspF overexpressed in HEK-293T cells can also enhance octamer crotonylation <jats:italic>in vitro<\/jats:italic>. Then we enriched crotonylated proteins and conducted LC-MS to study the crotonylation changes of proteins in HEK-293T cells caused by BspF overexpression. A total of 5,559 crotonylation sites were identified on 1,525 different proteins, of which 331 sites on 265 proteins were significantly changed. We found that Rab9A and RAP1B in proteomics data have a great impact on <jats:italic>Brucella<\/jats:italic> survival, so we speculate that BspF may influence the function of host proteins by altering crotonylation, thereby promoting the intracellular propagation of <jats:italic>Brucella<\/jats:italic>.<\/jats:p>","DOI":"10.3389\/fcimb.2020.603457","type":"journal-article","created":{"date-parts":[[2021,1,9]],"date-time":"2021-01-09T10:27:29Z","timestamp":1610188049000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":11,"title":["Global Lysine Crotonylation Alterations of Host Cell Proteins Caused by Brucella Effector BspF"],"prefix":"10.3389","volume":"10","author":[{"given":"Jinying","family":"Zhu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qiao","family":"Dong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Changpeng","family":"Dong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xi","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Huan","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zeliang","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2021,1,8]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"3862","DOI":"10.1002\/pmic.200800026","article-title":"Quantitative analysis of the intramacrophagic Brucella suis proteome reveals metabolic adaptation to late stage of cellular infection","volume":"8","author":"Al Dahouk","year":"2008","journal-title":"Proteomics"},{"key":"B2","doi-asserted-by":"publisher","first-page":"111","DOI":"10.1146\/annurev-animal-021815-111326","article-title":"Brucella spp. Virulence Factors and Immunity","volume":"4","author":"Byndloss","year":"2016","journal-title":"Annu. 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