Jaylene ollivierre (5 risultati)

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Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The homodimeric umuD gene products play key roles in regulating the cellular response to DNA damage in Escherichia coli. UmuD2 is composed of 139-amino acid subunits and is upregulated as part of the SOS DNA damage response. Subsequently, damage-induced RecA:ssDNA nucleoprotein filaments mediate the slow autocleavage of the N-terminal 24-amino acid arms of UmuD2 yielding UmuD'2. It was previously proposed that UmuD cleaves only in the trans conformation, in which the arm of one monomer utilizes that active site of the adjacent monomer for cleavage. Cleavage in trans would therefore require dimerization. However, isoenergetic models of UmuD2 suggested that the arms may adopt cis (intramolecular) or trans (intermolecular) conformations, and may be unbound from or bound to the globular C-terminal domain. The dynamic nature of the N-terminal arms may explain how a number of distinct protein-protein contacts that prevent and facilitate mutagenic translesion synthesis (TLS) are made. Here we discuss how the conformation and dynamics of the UmuD proteins regulate the DNA damage response. 168 pp. Englisch.…

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - The homodimeric umuD gene products play key roles in regulating the cellular response to DNA damage in Escherichia coli. UmuD2 is composed of 139-amino acid subunits and is upregulated as part of the SOS DNA damage response. Subsequently, damage-induced RecA:ssDNA nucleoprotein filaments mediate the slow autocleavage of the N-terminal 24-amino acid arms of UmuD2 yielding UmuD'2. It was previously proposed that UmuD cleaves only in the trans conformation, in which the arm of one monomer utilizes that active site of the adjacent monomer for cleavage. Cleavage in trans would therefore require dimerization. However, isoenergetic models of UmuD2 suggested that the arms may adopt cis (intramolecular) or trans (intermolecular) conformations, and may be unbound from or bound to the globular C-terminal domain. The dynamic nature of the N-terminal arms may explain how a number of distinct protein-protein contacts that prevent and facilitate mutagenic translesion synthesis (TLS) are made. Here we discuss how the conformation and dynamics of the UmuD proteins regulate the DNA damage response.…

Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Ollivierre JayleneJaylene Ollivierre, PhD: Studied Biological Chemistry at Northeastern University. Postdoctoral researcher at MIT, Boston.The homodimeric umuD gene products play key roles in regulating the cellular response to .…

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The homodimeric umuD gene products play key roles in regulating the cellular response to DNA damage in Escherichia coli. UmuD2 is composed of 139-amino acid subunits and is upregulated as part of the SOS DNA damage response. Subsequently, damage-induced RecA:ssDNA nucleoprotein filaments mediate the slow autocleavage of the N-terminal 24-amino acid arms of UmuD2 yielding UmuD¿2. It was previously proposed that UmuD cleaves only in the trans conformation, in which the arm of one monomer utilizes that active site of the adjacent monomer for cleavage. Cleavage in trans would therefore require dimerization. However, isoenergetic models of UmuD2 suggested that the arms may adopt cis (intramolecular) or trans (intermolecular) conformations, and may be unbound from or bound to the globular C-terminal domain. The dynamic nature of the N-terminal arms may explain how a number of distinct protein-protein contacts that prevent and facilitate mutagenic translesion synthesis (TLS) are made. Here we discuss how the conformation and dynamics of the UmuD proteins regulate the DNA damage response.OmniScriptum SRL, Str. Armeneasca 28/1, office 1, 2012 Chisinau 168 pp. Englisch.…