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DTSTART:19960101T000000 END:STANDARD BEGIN:STANDARD TZNAME:GMT TZOFFSETFROM:+0100 TZOFFSETTO:+0000 DTSTART:19961027T020000 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20260614T132917Z DTSTART;VALUE=DATE-TIME:20170510T130000 DTEND;VALUE=DATE-TIME:20170510T140000 SUMMARY:Seminar: Single-molecule studies of eukaryotic DNA replication\, Dr Hasan Yardimci\, The Francis Crick Institute TZID:Europe/London UID:20170510-094d43f5596950890159696b50c5175e@warwick.ac.uk CREATED:20170104T121917Z DESCRIPTION:Abstract: Faithful duplication of the genome is crucial for p roper cell division and thus the genetic integrity of all organisms. Err ors in DNA replication can lead to genomic instability\, a characteristi c feature of most cancer cells. A key component of the replication machi nery (replisome) is the DNA helicase\, which separates the double helix into its component strands so they can be copied. In this talk\, I will first discuss our efforts to decipher the molecular mechanism of the Cdc 45/MCM2-7/GINS (CMG) complex that acts as the replicative helicase in eu karyotes\, The basic mechanism by which this helicase unwinds DNA at the replication fork has been controversial. CMG was proposed to function a s a physically coupled pair of helicases that pumps double-stranded DNA through the helicase central channel\, splitting the duplex apart when i t emerges from the protein complex. Others challenged this view and prop osed that they function as single hexamers that encircle and translocate along a single strand and unwind DNA by excluding the other strand from the central channel (“steric exclusion”). Determining which model is co rrect has profound implications for the spatial organization and inner w orkings of the replisome. To better understand how CMG interacts with DN A\, we developed novel methodologies that combine single-molecule imagin g and DNA nanomanipulation in extract-based systems. I will also present a new single molecule tool that we developed to perform fluorescence su per resolution imaging of DNA replication intermediates. LOCATION:GLT2\, Medical School Building CATEGORIES:BiomedicalSciences,Athena Swan,BMS_CDB LAST-MODIFIED:20170509T124231Z ORGANIZER;CN=Jas Bains: END:VEVENT END:VCALENDAR