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1

Rola regulacji ekspresji genow w stabilnosci plazmidow

100%
Jagura-Burdzy G.
Kosmos
|
2002
|
tom 51
|
nr 3
319-330
2

Active stable maintenance functions in low copy-number plasmids of Gram-positive bacteria. II. Post-segregational killing systems

84%
Dmowski M., Jagura-Burdzy G.
Polish Journal of Microbiology
|
2013
|
tom 62
|
nr 1
Active support is needed for low copy-number plasmids to be stably maintained in bacterial cells. The mechanisms that fulfill this role are (i) partition systems (PAR) acting to separate plasmid molecules to daughter cells and (ii) toxin-andidote (TA) (post-segregational killing-PSK) systems which arrest cell growth until the plasmid reaches the correct copy-number or kill the cells that have not inherited the plasmid. Our knowledge of toxin-antidote systems comes mainly from studies on Gram-negative bacteria. However, some addiction systems of Gram-positive bacteria have been characterized in detail or recently identified. Altogether, they bring new interesting data on toxin-antidote functioning in bacteria.
3

Cloning of cysB mutant alleles of S. typhimurium

84%
Jagura-Burdzy G., Hulanicka D.
Acta Biochimica Polonica
|
1987
|
tom 34
|
nr 1
4

Active stable maintenance functions in low copy-number plasmids of Gram-positive bacteria. I. Partition systems

84%
Dmowski M., Jagura-Burdzy G.
Polish Journal of Microbiology
|
2013
|
tom 62
|
nr 1
Low copy number plasmids cannot rely on the random segregation during bacterial cell division. To be stably maintained in the population they evolved two types of mechanisms (i) partition systems (PAR) that actively separate replicated plasmid molecules to the daughter cells and (ii) toxin-andidote systems (TA) that act after cell division to kill plasmid-less cells. Our knowledge of partition systems has been based mainly on analysis of plasmids from Gram-negative bacteria. Now, numerous partition systems of plasmids from Gram-positive bacteria have also been characterized and make significant contribution to our understanding of these mechanisms.
5

Spread and survival of promiscuous IncP-1 plasmids

84%
Adamczyk M., Jagura-Burdzy G.
Acta Biochimica Polonica
|
2003
|
tom 50
|
nr 2
Plasmids classified to the IncP-1 incompatibility group belong to the most stably maintained mobile elements among low copy number plasmids known to date. The re­markable persistence is achieved by various tightly controlled stability mechanisms like active partitioning, efficient conjugative transfer system, killing of plasmid-free segregants and multimer resolution. The unique feature of IncP-1 plasmids is the cen­tral control operon coding for global regulators which control the expression of genes involved in vegetative replication, stable maintenance and conjugative transfer. The multivalent regulatory network provides means for coordinated expression of all plasmid functions. The current state of knowledge about two fully sequenced plasmids RK2 and R751, representatives of the IncP-1a and IncP-1β subgroups, is presented.
6

Bacterial chromosome segregation

84%
Bartosik A. A., Jagura-Burdzy G.
Acta Biochimica Polonica
|
2005
|
tom 52
|
nr 1
In most bacteria two vital processes of the cell cycle: DNA replication and chromosome segregation overlap temporally. The action of replication machinery in a fixed location in the cell leads to the duplication of oriC regions, their rapid separation to the opposite halves of the cell and the duplicated chromosomes gradually moving to the same locations prior to cell division. Numerous proteins are implicated in co-replicational DNA segregation and they will be characterized in this review. The proteins SeqA, SMC/MukB, MinCDE, MreB/Mbl, RacA, FtsK/SpoIIIE playing different roles in bacterial cells are also involved in chromosome segregation. The chromosomally encoded ParAB homologs of active partitioning proteins of low-copy number plasmids are also players, not always indispensable, in the segregation of bacterial chromosomes.
7

Cysteine regulon of Enterobacteriaceae

60%
Zatyka M., Sirko A., Jagura-Burdzy G., Hryniewicz M., Hulanicka D.
Postępy Biochemii
|
1992
|
tom 38
|
nr 2
46-48
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