Accès ouvert

Structure of an octameric form of the minichromosome maintenance protein from the archaeon Pyrococcus abyssi

Article scientifique 2017 Anglais

Résumé

Cell division is a complex process that requires precise duplication of genetic material. Duplication is concerted by replisomes. The Minichromosome Maintenance (MCM) replicative helicase is a crucial component of replisomes. Eukaryotic and archaeal MCM proteins are highly conserved. In fact, archaeal MCMs are powerful tools for elucidating essential features of MCM function. However, while eukaryotic MCM2-7 is a heterocomplex made of different polypeptide chains, the MCM complexes of many Archaea form homohexamers from a single gene product. Moreover, some archaeal MCMs are polymorphic, and both hexameric and heptameric architectures have been reported for the same polypeptide. Here, we present the structure of the archaeal MCM helicase from Pyrococcus abyssi in its single octameric ring assembly. To our knowledge, this is the first report of a full-length octameric MCM helicase.

Citer ce document

Cannone, G., Visentin, S., Palud, A., Henneke, G., Spagnolo, L. (2017). Structure of an octameric form of the minichromosome maintenance protein from the archaeon Pyrococcus abyssi. https://doi.org/10.1038/srep42019

Accès au document

Voir sur le dépôt source

Ce document est hébergé sur son dépôt institutionnel d'origine.

Auteur(s)

Giuseppe Cannone Silvia Visentin Adeline Palud Ghislaine Henneke Laura Spagnolo

Statistiques

Consultations : 1

Téléchargements : 0