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The chlamydial deubiquitinase Cdu1 supports recruitment of Golgi vesicles to the inclusion

Please always quote using this URN: urn:nbn:de:bvb:20-opus-208675
  • Chlamydia trachomatis is the main cause of sexually transmitted diseases worldwide. As obligate intracellular bacteria Chlamydia replicate in a membrane bound vacuole called inclusion and acquire nutrients for growth and replication from their host cells. However, like all intracellular bacteria, Chlamydia have to prevent eradication by the host's cell autonomous system. The chlamydial deubiquitinase Cdu1 is secreted into the inclusion membrane, facing the host cell cytosol where it deubiquitinates cellular proteins. Here we show thatChlamydia trachomatis is the main cause of sexually transmitted diseases worldwide. As obligate intracellular bacteria Chlamydia replicate in a membrane bound vacuole called inclusion and acquire nutrients for growth and replication from their host cells. However, like all intracellular bacteria, Chlamydia have to prevent eradication by the host's cell autonomous system. The chlamydial deubiquitinase Cdu1 is secreted into the inclusion membrane, facing the host cell cytosol where it deubiquitinates cellular proteins. Here we show that inactivation of Cdu1 causes a growth defect of C. trachomatis in primary cells. Moreover, ubiquitin and several autophagy receptors are recruited to the inclusion membrane of Cdu1‐deficient Chlamydia . Interestingly, the growth defect of cdu1 mutants is not rescued when autophagy is prevented. We find reduced recruitment of Golgi vesicles to the inclusion of Cdu1 mutants indicating that vesicular trafficking is altered in bacteria without active deubiquitinase (DUB). Our work elucidates an important role of Cdu1 in the functional preservation of the chlamydial inclusion surface.show moreshow less

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Metadaten
Author: Daniela Auer, Sophie D. Hügelschäffer, Annette B. Fischer, Thomas RudelORCiD
URN:urn:nbn:de:bvb:20-opus-208675
Document Type:Journal article
Faculties:Fakultät für Biologie / Theodor-Boveri-Institut für Biowissenschaften
Language:English
Parent Title (English):Cellular Microbiology
Year of Completion:2020
Volume:22
Issue:5
Pagenumber:e13136
Source:Cellular Microbiology 2020, 22(5):e13136. DOI: 10.1111/cmi.13136
DOI:https://doi.org/10.1111/cmi.13136
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie
Tag:Cdu1; ChlaDUB1; Chlamydia trachomatis; DUB; Golgi; autophagy; xenophagy
Release Date:2020/09/22
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International