Results 271 to 280 of about 741,058 (313)
Some of the next articles are maybe not open access.
Plasmid-partition functions of the P7 prophage
Journal of Molecular Biology, 1989The sequences responsible for the proper partition of the P7 plasmid prophage to daughter cells lie within a discrete block of non-similarity between P7 and its close relative P1. The DNA sequence of the P7 region was determined. A segment with near identity to the replication (rep) region of P1 is followed by sequences (P7 par) that are clearly ...
D N, Ludtke, B G, Eichorn, S J, Austin
openaire +2 more sources
Plasmid partitioning superstructure system
Science, 2015DNA Segregation Partitioning and sharing DNA between dividing cells is critical for all domains of life. Prokaryotes must share certain plasmids as well as their genomic DNA to survive. Schumacher et al. studied the partition system that segregates a conjugative plasmid in the prokaryote Sulfolobus. The system consists of three proteins.
openaire +1 more source
Partition of Plasmid R1: A Computer Simulation
Plasmid, 1993A computer-simulated population of individual Escherichia coli cells harboring plasmid R1 parA+/parB- has been used to analyze three possible modes of plasmid segregation: equi-partition, in which plasmids are partitioned equally to daughter cells at cell division; single-site inheritance, in which the products of the most recent replication event are ...
R, Rosenfeld, N B, Grover
openaire +2 more sources
Molecular Microbiology, 1997
The partition system of the P1 plasmid, P1parconsists of the ParA and ParB proteins and a cis‐acting site, parS. It is responsible for the orderly segregation of plasmid copies to daughter cells. Plasmids with null mutations in parA or parB replicate normally, but missegregate.
B, Youngren, S, Austin
openaire +2 more sources
The partition system of the P1 plasmid, P1parconsists of the ParA and ParB proteins and a cis‐acting site, parS. It is responsible for the orderly segregation of plasmid copies to daughter cells. Plasmids with null mutations in parA or parB replicate normally, but missegregate.
B, Youngren, S, Austin
openaire +2 more sources
Partition Systems of Bacterial Plasmids
2014Plasmids, as extrachromosomal elements, bear the burden of ensuring their own faithful segregation at cell division. This chapter reviews partition systems, which are, in general, systems that actively dictate the specific localization of plasmids inside the bacterial cell and coordinate this localization with the bacterial cell cycle.
Barbara E. Funnell, Roderick A. Slavcev
openaire +1 more source
Segregation of the yeast plasmid: similarities and contrasts with bacterial plasmid partitioning
Plasmid, 2004The high copy yeast plasmid 2 microm circle, like the well-studied low copy bacterial plasmids, utilizes two partitioning proteins and a cis-acting 'centromere'-like sequence for its stable propagation. Functionally, though, the protein and DNA constituents of the two partitioning systems are quite distinct.
Makkuni, Jayaram +3 more
openaire +2 more sources
Clustering versus random segregation of plasmids lacking a partitioning function: a plasmid paradox?
Plasmid, 2003Plasmids lacking a functional partition system are randomly distributed to the daughter cells; plasmid-free daughter cells are formed with a frequency of (1/2)2n per cell and cell generation where 2n is the (average) copy number at cell division. Hence, the unit of segregation is one plasmid copy. However, plasmids form clusters in the cells.
Nordström, K., Gerdes, K.
openaire +4 more sources
Cell, 1983
Plasmids that replicate using the replication origin (oriC) of the E. coli chromosome are not stably inherited through cell division, but can be stabilized by joining with a particular segment of F plasmid that presumably provides the partition function.
T, Ogura, S, Hiraga
openaire +2 more sources
Plasmids that replicate using the replication origin (oriC) of the E. coli chromosome are not stably inherited through cell division, but can be stabilized by joining with a particular segment of F plasmid that presumably provides the partition function.
T, Ogura, S, Hiraga
openaire +2 more sources
Partitioning of the pSC101 Plasmid during Cell Division
1985It is generally accepted that a mechanism must exist for ensuring that each of the products of a bacterial cell division receives a copy of the chromosome. However, until recently, the existence of a specific mechanism for actively distributing extrachromosomal elements such as plasmids to daughter cells was less clear.
S N, Cohen +4 more
openaire +2 more sources
1989
Plasmids are autonomously replicating elements that are dispensable for cell viability and are therefore vulnerable to loss from the growing cells. However, naturally occurring plasmids are very stably maintained in populations of the host bacteria. Thus, the individual copies must be distributed within the dividing cell in such a way as to ensure that
Ann L. Abeles, Stuart J. Austin
openaire +1 more source
Plasmids are autonomously replicating elements that are dispensable for cell viability and are therefore vulnerable to loss from the growing cells. However, naturally occurring plasmids are very stably maintained in populations of the host bacteria. Thus, the individual copies must be distributed within the dividing cell in such a way as to ensure that
Ann L. Abeles, Stuart J. Austin
openaire +1 more source