Ftsz Proteins
Mostrando 25-36 de 87 artigos, teses e dissertações.
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25. Bacterial SOS Checkpoint Protein SulA Inhibits Polymerization of Purified FtsZ Cell Division Protein
Cell division of Escherichia coli is inhibited when the SulA protein is induced in response to DNA damage as part of the SOS checkpoint control system. The SulA protein interacts with the tubulin-like FtsZ division protein. We investigated the effects of purified SulA upon FtsZ. SulA protein inhibits the polymerization and the GTPase activity of FtsZ, while
American Society for Microbiology.
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26. Polar Targeting of DivIVA in Bacillus subtilis Is Not Directly Dependent on FtsZ or PBP 2B
DivIVA is involved in Bacillus subtilis cell division and is located at the cell poles. Previous experiments suggested that the cell division proteins FtsZ and PBP 2B are required for polar targeting of DivIVA. By using outgrowing spores, we show that DivIVA accumulates at the cell poles independent of the presence of FtsZ or PBP 2B.
American Society for Microbiology.
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27. A dynamin-like protein (ADL2b), rather than FtsZ, is involved in Arabidopsis mitochondrial division
Recently, the FtsZ protein, which is known as a key component in bacterial cell division, was reported to be involved in mitochondrial division in algae. In yeast and animals, however, mitochondrial fission depends on the dynamin-like proteins Dnm1p and Drp1, respectively, whereas in green plants, no potential mitochondrial division genes have been identifie
National Academy of Sciences.
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28. RNase E processing of essential cell division genes mRNA in Escherichia coli.
The ratio of the FtsZ to FtsA proteins determines the correct initiation of cell division in Escherichia coli. The genes for these proteins are contiguous on the chromosome. Although both genes are transcribed from common promoters, the presence of ftsZ-specific promoters, along with differences in the efficiency of translation of their respective mRNAs, con
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29. Enhanced Production of Recombinant Proteins in Escherichia coli by Filamentation Suppression
During growth of high-cell-density cultures of Escherichia coli, overproduction of recombinant proteins often results in increased stress response, cell filamentation, and growth cessation. Filamentation of cells consequently lowers final achievable cell concentration and productivity of the target protein. Reported here is a methodology that should prove us
American Society for Microbiology.
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30. Cell division control in Escherichia coli K-12: some properties of the ftsZ84 mutation and suppression of this mutation by the product of a newly identified gene.
The Fts proteins play an important role in the control of cell division in Escherichia coli. These proteins, which possibly form a functional complex, are encoded by genes that form an operon. In this study, we examined the properties of the temperature-sensitive mutation ftsZ84 harbored by low- or high-copy-number plasmids. Cells of strain AB1157, which had
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31. FtsZ Collaborates with Penicillin Binding Proteins To Generate Bacterial Cell Shape in Escherichia coli
The mechanisms by which bacteria adopt and maintain individual shapes remain enigmatic. Outstanding questions include why cells are a certain size, length, and width; why they are uniform or irregular; and why some branch while others do not. Previously, we showed that Escherichia coli mutants lacking multiple penicillin binding proteins (PBPs) display exten
American Society for Microbiology.
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32. ARC6 Is a J-Domain Plastid Division Protein and an Evolutionary Descendant of the Cyanobacterial Cell Division Protein Ftn2W⃞
Replication of chloroplasts is essential for achieving and maintaining optimal plastid numbers in plant cells. The plastid division machinery contains components of both endosymbiotic and host cell origin, but little is known about the regulation and molecular mechanisms that govern the division process. The Arabidopsis mutant arc6 is defective in plastid di
American Society of Plant Biologists.
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33. Adenine Nucleotide-dependent Regulation of Assembly of Bacterial Tubulin-like FtsZ by a Hypermorph of Bacterial Actin-like FtsA*S⃞
Cytokinesis in bacteria depends upon the contractile Z ring, which is composed of dynamic polymers of the tubulin homolog FtsZ as well as other membrane-associated proteins such as FtsA, a homolog of actin that is required for membrane attachment of the Z ring and its subsequent constriction. Here we show that a previously characterized hypermorphic muta
American Society for Biochemistry and Molecular Biology.
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34. Cell cycle regulation and cell type-specific localization of the FtsZ division initiation protein in Caulobacter.
Many genes involved in cell division and DNA replication and their protein products have been identified in bacteria; however, little is known about the cell cycle regulation of the intracellular concentration of these proteins. It has been shown that the level of the tubulin-like GTPase FtsZ is critical for the initiation of cell division in bacteria. We sh
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35. Use of the Cell Division Protein FtsZ as a Means of Differentiating among Bartonella Species
Genes coding for homologs of the highly conserved cell division protein FtsZ were isolated from Bartonella henselae and Bartonella quintana, the causative agents of cat scratch disease and trench fever, respectively. DNA fragments coding for the ftsZ open reading frames (ORFs) were cloned into Escherichia coli following PCR amplification with primers based o
American Society for Microbiology.
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36. New Temperature-Sensitive Alleles of ftsZ in Escherichia coli
We isolated five new temperature-sensitive alleles of the essential cell division gene ftsZ in Escherichia coli, using P1-mediated, localized mutagenesis. The five resulting single amino acid changes (Gly109→Ser109 for ftsZ6460, Ala129→Thr129 for ftsZ972, Val157→Met157 for ftsZ2066, Pro203→Leu203 for ftsZ9124, and Ala239→Val239 for ftsZ2863) are di
American Society for Microbiology.