Molecular recognition determinants for type IV secretion of diverse families of conjugative relaxases

S Lang, K Gruber, S Mihajlovic, R Arnold… - Molecular …, 2010 - Wiley Online Library
In preparation for transfer conjugative type IV secretion systems (T4SS) produce a
nucleoprotein adduct containing a relaxase enzyme covalently linked to the 5′ end of …

A translocation motif in relaxase TrwC specifically affects recruitment by its conjugative type IV secretion system

A Alperi, D Larrea, E Fernández-González… - Journal of …, 2013 - Am Soc Microbiol
Type IV secretion system (T4SS) substrates are recruited through a translocation signal that
is poorly defined for conjugative relaxases. The relaxase TrwC of plasmid R388 is …

Structure of a translocation signal domain mediating conjugative transfer by type IV secretion systems

A Redzej, A Ilangovan, S Lang, CJ Gruber… - Molecular …, 2013 - Wiley Online Library
Relaxases are proteins responsible for the transfer of plasmid and chromosomal DNA from
one bacterium to another during conjugation. They covalently react with a specific …

Translocation through the conjugative type IV secretion system requires unfolding of its protein substrate

M Trokter, G Waksman - Journal of bacteriology, 2018 - Am Soc Microbiol
Bacterial conjugation, a mechanism of horizontal gene transfer, is the major means by which
antibiotic resistance spreads among bacteria (1, 2). Conjugative plasmids are transferred …

General mutagenesis of F plasmid TraI reveals its role in conjugative regulation

RJF Haft, G Palacios, T Nguyen, M Mally… - Journal of …, 2006 - Am Soc Microbiol
Bacteria commonly exchange genetic information by the horizontal transfer of conjugative
plasmids. In gram-negative conjugation, a relaxase enzyme is absolutely required to …

The TraK accessory factor activates substrate transfer through the pKM101 type IV secretion system independently of its role in relaxosome assembly

YG Li, PJ Christie - Molecular microbiology, 2020 - Wiley Online Library
A large subfamily of the type IV secretion systems (T4SSs), termed the conjugation systems,
transmit mobile genetic elements (MGEs) among many bacterial species. In the initiating …

Relaxases and plasmid transfer in gram-negative bacteria

EL Zechner, G Moncalián, F de la Cruz - … IV secretion in gram-negative and …, 2017 - Springer
All plasmids that spread by conjugative transfer encode a relaxase. That includes plasmids
that encode the type IV secretion machinery necessary to mediate cell to cell transfer, as …

Structural biology of the Gram-negative bacterial conjugation systems

A Ilangovan, S Connery, G Waksman - Trends in microbiology, 2015 - cell.com
Conjugation, the process by which plasmid DNA is transferred from one bacterium to
another, is mediated by type IV secretion systems (T4SSs). T4SSs are versatile systems that …

The carboxyl terminus of protein TraD adds specificity and efficiency to F-plasmid conjugative transfer

JI Sastre, E Cabezón, F de la Cruz - Journal of bacteriology, 1998 - Am Soc Microbiol
We isolated and characterized traD mutants with an altered specificity of interaction with
relaxosomes of various conjugative (F and R388) and mobilizable (RSF1010 and ColE1) …

Swapping single-stranded DNA sequence specificities of relaxases from conjugative plasmids F and R100

MJ Harley, JF Schildbach - Proceedings of the National …, 2003 - National Acad Sciences
Conjugative plasmid transfer is an important mechanism for diversifying prokaryotic
genomes and disseminating antibiotic resistance. Relaxases are conjugative plasmid …