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- 저자 : Anamaria M. P. dos Santos (검색결과 1 건)
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Type three secretion system in Salmonella Typhimurium: the key to infection
Anamaria M. P. dos Santos,Rafaela G. Ferrari,Carlos A. Conte‑Junior 한국유전학회 2020 Genes & Genomics Vol.42 No.5
Background Type Three Secretion Systems (T3SS) are nanomachine complexes, which display the ability to inject effector proteins directly into host cells. This skill allows for gram-negative bacteria to modulate several host cell responses, such as cytoskeleton rearrangement, signal transduction, and cytokine production, which in turn increase the pathogenicity of these bacteria. The Salmonella enterica subsp. enterica serovar Typhimurium (ST) T3SS has been the most characterized so far. Among gram-negative bacterium, ST is one of enterica groups predicted to have two T3SSs activated during different phases of infection. Objective To comprise current information about ST T3SS structure and function as well as an overview of its assembly and hierarchical regulation. Methods With a brief and straightforward reading, this review summarized aspects of both ST T3SS, such as its structure and function. That was possible due to the development of novel techniques, such as X-ray crystallography, cryoelectron microscopy, and nano-gold labelling, which also elucidated the mechanisms behind T3SS assembly and regulation, which was addressed in this review. Conclusion This paper provided fundamental overview of ST T3SS assembly and regulation, besides summarized the structure and function of this complex. Due to T3SS relevance in ST pathogenicity, this complex could become a potential target in therapeutic studies as this nanomachine modulates the infection process.
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