National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
5T32AI007046-45
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM122510
米国
引用
ジャーナル: Nat Microbiol / 年: 2022 タイトル: Mating pair stabilization mediates bacterial conjugation species specificity. 著者: Wen Wen Low / Joshua L C Wong / Leticia C Beltran / Chloe Seddon / Sophia David / Hok-Sau Kwong / Tatiana Bizeau / Fengbin Wang / Alejandro Peña / Tiago R D Costa / Bach Pham / Min Chen / ...著者: Wen Wen Low / Joshua L C Wong / Leticia C Beltran / Chloe Seddon / Sophia David / Hok-Sau Kwong / Tatiana Bizeau / Fengbin Wang / Alejandro Peña / Tiago R D Costa / Bach Pham / Min Chen / Edward H Egelman / Konstantinos Beis / Gad Frankel / 要旨: Bacterial conjugation mediates contact-dependent transfer of DNA from donor to recipient bacteria, thus facilitating the spread of virulence and resistance plasmids. Here we describe how variants of ...Bacterial conjugation mediates contact-dependent transfer of DNA from donor to recipient bacteria, thus facilitating the spread of virulence and resistance plasmids. Here we describe how variants of the plasmid-encoded donor outer membrane (OM) protein TraN cooperate with distinct OM receptors in recipients to mediate mating pair stabilization and efficient DNA transfer. We show that TraN from the plasmid pKpQIL (Klebsiella pneumoniae) interacts with OmpK36, plasmids from R100-1 (Shigella flexneri) and pSLT (Salmonella Typhimurium) interact with OmpW, and the prototypical F plasmid (Escherichia coli) interacts with OmpA. Cryo-EM analysis revealed that TraN interacts with OmpK36 through the insertion of a β-hairpin in the tip of TraN into a monomer of the OmpK36 porin trimer. Combining bioinformatic analysis with AlphaFold structural predictions, we identified a fourth TraN structural variant that mediates mating pair stabilization by binding OmpF. Accordingly, we devised a classification scheme for TraN homologues on the basis of structural similarity and their associated receptors: TraNα (OmpW), TraNβ (OmpK36), TraNγ (OmpA), TraNδ (OmpF). These TraN-OM receptor pairings have real-world implications as they reflect the distribution of resistance plasmids within clinical Enterobacteriaceae isolates, demonstrating the importance of mating pair stabilization in mediating conjugation species specificity. These findings will allow us to predict the distribution of emerging resistance plasmids in high-risk bacterial pathogens.
全体 : Conjugal mating pair stabilizing complex OmpK36 and TraN
全体
名称: Conjugal mating pair stabilizing complex OmpK36 and TraN
要素
複合体: Conjugal mating pair stabilizing complex OmpK36 and TraN
タンパク質・ペプチド: OmpK36
タンパク質・ペプチド: TraN
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超分子 #1: Conjugal mating pair stabilizing complex OmpK36 and TraN
超分子
名称: Conjugal mating pair stabilizing complex OmpK36 and TraN タイプ: complex / キメラ: Yes / ID: 1 / 親要素: 0 / 含まれる分子: all 詳細: OmpK36WT ATCC43816 serially passaged in vitro on Rifampicin containing LB plates to 100mcg/ml followed by two passages in BALB/c mice. Mature TraN gene D28 to Q651 from pKpQIL was sub-cloned ...詳細: OmpK36WT ATCC43816 serially passaged in vitro on Rifampicin containing LB plates to 100mcg/ml followed by two passages in BALB/c mice. Mature TraN gene D28 to Q651 from pKpQIL was sub-cloned into the pTAMAHISTEV vector with an N-terminal His7-tag and a tobacco etch virus TEV cleavage site using the NcoI and XhoI restriction enzyme sites. The construct was transformed into E. coli C43 DE3 competent cells and expressed in Terrific Broth TB medium Formedium supplemented with 100 microgram/mL ampicillin.