TY - JOUR
T1 - Single-molecule observation of prokaryotic DNA replication
AU - Geertsema, Hylkje J.
AU - Duderstadt, Karl E.
AU - Van oijen, Antoine M.
N1 - Publisher Copyright:
© 2015, Springer Science+Business Media New York.
PY - 2015
Y1 - 2015
N2 - Replication of DNA requires the coordinated activity of a number of proteins within a multiprotein complex, the replisome. Recent advances in single-molecule techniques have enabled the observation of dynamic behavior of individual replisome components and of the replisome as a whole, aspects that previously often have been obscured by ensemble averaging in more classical solution-phase biochemical experiments. To improve robustness and reproducibility of single-molecule assays of replication and allow objective analysis and comparison of results obtained from such assays, common practices should be established. Here, we describe the technical details of two assays to study replisome activity. In one, the kinetics of replication are observed as length changes in DNA molecules mechanically stretched by a laminar flow applied to attached beads. In the other, fluorescence imaging is used to determine both the kinetics and stoichiometry of individual replisome components. These in vitro single-molecule methods allow for elucidation of the dynamic behavior of individual replication proteins of prokaryotic replication systems.
AB - Replication of DNA requires the coordinated activity of a number of proteins within a multiprotein complex, the replisome. Recent advances in single-molecule techniques have enabled the observation of dynamic behavior of individual replisome components and of the replisome as a whole, aspects that previously often have been obscured by ensemble averaging in more classical solution-phase biochemical experiments. To improve robustness and reproducibility of single-molecule assays of replication and allow objective analysis and comparison of results obtained from such assays, common practices should be established. Here, we describe the technical details of two assays to study replisome activity. In one, the kinetics of replication are observed as length changes in DNA molecules mechanically stretched by a laminar flow applied to attached beads. In the other, fluorescence imaging is used to determine both the kinetics and stoichiometry of individual replisome components. These in vitro single-molecule methods allow for elucidation of the dynamic behavior of individual replication proteins of prokaryotic replication systems.
KW - DNA replication
KW - E.coli
KW - Single molecule
KW - T7 bacteriophage
UR - http://www.scopus.com/inward/record.url?scp=84930011499&partnerID=8YFLogxK
U2 - 10.1007/978-1-4939-2596-4_14
DO - 10.1007/978-1-4939-2596-4_14
M3 - Article
C2 - 25916715
AN - SCOPUS:84930011499
SN - 1064-3745
VL - 1300
SP - 219
EP - 238
JO - Methods in molecular biology (Clifton, N.J.)
JF - Methods in molecular biology (Clifton, N.J.)
ER -