Staphylococcal SCCmec elements encode an active MCM-like helicase and thus may be replicative
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چکیده
منابع مشابه
The MCM complex: (just) a replicative helicase?
The MCM2-MCM7 (minichromosome maintenance 2-7) complex is involved both in the initiation and the elongation step of eukaryotic DNA replication and is believed to be the replicative helicase. Whereas the mechanism of DNA unwinding at the replication fork has been extensively investigated, the role of the MCM2-MCM7 complex during initiation has not yet been characterized by biochemical studies. ...
متن کاملA biochemically active MCM-like helicase in Bacillus cereus
The mini-chromosome maintenance (MCM) proteins serve as the replicative helicases in archaea and eukaryotes. Interestingly, an MCM homolog was identified, by BLAST analysis, within a phage integrated in the bacterium Bacillus cereus (Bc). BcMCM is only related to the AAA region of MCM-helicases; the typical amino-terminus is missing and is replaced by a segment with weak homology to primases. W...
متن کاملThe Mcm complex: unwinding the mechanism of a replicative helicase.
The Mcm2-7 complex serves as the eukaryotic replicative helicase, the molecular motor that both unwinds duplex DNA and powers fork progression during DNA replication. Consistent with its central role in this process, much prior work has illustrated that Mcm2-7 loading and activation are landmark events in the regulation of DNA replication. Unlike any other hexameric helicase, Mcm2-7 is composed...
متن کاملMolecular Investigation of Staphylococcal Cassette Chromosome mec (SCCmec) Elements Isolated from Intensive Care Unit
Background and Aims: Based on the results, Staphylococcus aureus is one of the serious infectious agents found in community and hospitals with remarkable potential for high morbidity and mortality around the globe. The present study was carried out for molecular investigation of methicillin-resistant Staphylococcus aureus strains and Staphylococcal Chromosomal Cassette mec (SCCmec) phenotypes i...
متن کاملOrigin Licensing Requires ATP Binding and Hydrolysis by the MCM Replicative Helicase
Loading of the six related Minichromosome Maintenance (MCM) proteins as head-to-head double hexamers during DNA replication origin licensing is crucial for ensuring once-per-cell-cycle DNA replication in eukaryotic cells. Assembly of these prereplicative complexes (pre-RCs) requires the Origin Recognition Complex (ORC), Cdc6, and Cdt1. ORC, Cdc6, and MCM are members of the AAA+ family of ATPase...
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ژورنال
عنوان ژورنال: Nature Structural & Molecular Biology
سال: 2016
ISSN: 1545-9993,1545-9985
DOI: 10.1038/nsmb.3286