@article{Miguel-Romero:2022,
author = {Miguel-Romero, L and Alqasmi, M and Bacarizo, J and Tan, JA and Cogdell, RJ and Chen, J and Byron, O and Christie, GE and Marina, A and Penades, J},
journal = {Nucleic Acids Research},
pages = {11109--11127},
title = {Non-canonical Staphylococcus aureus pathogenicity island repression},
url = {https://academic.oup.com/nar/article/50/19/11109/6749543},
volume = {50},
year = {2022}
}

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TY  - JOUR
AB  - Mobile genetic elements control their life cycles by the expression of a master repressor, whose function must be disabled to allow the spread of these elements in nature. Here we describe an unprecedented repression-derepression mechanism involved in the transfer of Staphylococcus aureus pathogenicity islands. Contrary to the classical phage and SaPI repressors, which are dimers, the SaPI1 repressor StlSaPI1 presents a unique tetramericconformation never seen before. Importantly, not just one but two tetramers are required for SaPI1 repression, which increases the novelty of the system. To derepress SaPI1, the phage-encoded protein Sri binds to and induces a conformational change in the DNA binding domains of StlSaPI1, preventing the binding of the repressor to its cognate StlSaPI1 sites. Finally, our findings demonstrate that this system is not exclusive to SaPI1 but widespread in nature. Overall, our results characterise a novel repression-induction system involved in the transfer of MGE-encoded virulence factors in nature.
AU  - Miguel-Romero,L
AU  - Alqasmi,M
AU  - Bacarizo,J
AU  - Tan,JA
AU  - Cogdell,RJ
AU  - Chen,J
AU  - Byron,O
AU  - Christie,GE
AU  - Marina,A
AU  - Penades,J
EP  - 11127
PY  - 2022///
SN  - 0305-1048
SP  - 11109
TI  - Non-canonical Staphylococcus aureus pathogenicity island repression
T2  - Nucleic Acids Research
UR  - https://academic.oup.com/nar/article/50/19/11109/6749543
UR  - http://hdl.handle.net/10044/1/99876
VL  - 50
ER  - 

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