Enterobacterial TraT complement resistance / Enterobacterial TraT complement resistance protein / cell outer membrane / TraT complement resistance protein
Biotechnology and Biological Sciences Research Council (BBSRC)
BB/M011178/1
英国
引用
ジャーナル: Nat Commun / 年: 2025 タイトル: Cryo-EM structure and evolutionary history of the conjugation surface exclusion protein TraT. 著者: Chloe Seddon / Sophia David / Joshua L C Wong / Naito Ishimoto / Shan He / Jonathan Bradshaw / Wen Wen Low / Gad Frankel / Konstantinos Beis / 要旨: Conjugation plays a major role in dissemination of antimicrobial resistance genes. Following transfer of IncF-like plasmids, recipients become refractory to a second wave of conjugation with the same ...Conjugation plays a major role in dissemination of antimicrobial resistance genes. Following transfer of IncF-like plasmids, recipients become refractory to a second wave of conjugation with the same plasmid via entry (TraS) and surface (TraT) exclusion mechanisms. Here, we show that TraT from the pKpQIL and F plasmids (TraT and TraT) exhibits plasmid surface exclusion specificity. The cryo-EM structures of TraT and TraT reveal that they oligomerise into decameric champagne bottle cork-like structures, which are anchored to the outer membrane via a diacylglycerol and palmitic acid modified α-helical barrel domain. Unexpectedly, we identify chromosomal TraT homologues from multiple Gram-negative phyla which form numerous divergent lineages in a phylogenetic tree of TraT sequences. Plasmid-associated TraT sequences are found in multiple distinct lineages, including two separate clades incorporating TraT from Enterobacteriaceae IncF/F-like and Legionellaceae F-like plasmids. These findings suggest that different plasmid backbones have acquired and co-opted TraT on independent occasions.
全体 : Cryo-EM structure of the decameric TraT surface exclusion lipopro...
全体
名称: Cryo-EM structure of the decameric TraT surface exclusion lipoprotein from Klebsiella pneumoniae (pKpQIL plasmid)
要素
複合体: Cryo-EM structure of the decameric TraT surface exclusion lipoprotein from Klebsiella pneumoniae (pKpQIL plasmid)
タンパク質・ペプチド: TraT complement resistance protein
リガンド: DIACYL GLYCEROL
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超分子 #1: Cryo-EM structure of the decameric TraT surface exclusion lipopro...
超分子
名称: Cryo-EM structure of the decameric TraT surface exclusion lipoprotein from Klebsiella pneumoniae (pKpQIL plasmid) タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1
由来(天然)
生物種: Klebsiella pneumoniae (肺炎桿菌)
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分子 #1: TraT complement resistance protein
分子
名称: TraT complement resistance protein / タイプ: protein_or_peptide / ID: 1 詳細: (DGA) corresponds to the posttranslational modification by diacylglycerol (DAG) The last 3 residues GSG are from the expression tag. コピー数: 10 / 光学異性体: LEVO