RNases H: Multiple roles in maintaining genome integrity

Multiple roles of ATM in monitoring and maintaining DNA integrity.

The ability of our cells to maintain genomic integrity is fundamental for protection from cancer development. Central to this process is the ability of cells to recognize and repair DNA damage and progress through the cell cycle in a regulated and orderly manner. In addition, protection of chromosome ends through the proper assembly of telomeres prevents loss of genetic information and aberrant...

Maintaining genome integrity.

Introduction Genomes have always been vulnerable to damage from intraand extracellular sources such as oxidative species generated by cell metabolism, spontaneous base loss or modification, radiation and chemicals (Friedberg et al, 2005a). As a result, mechanisms to cope with DNA damage developed early in evolution and have been conserved. Organisms need some genome stability, but must allow mu...

Roles of DNA helicases in the maintenance of genome integrity

Genome integrity is achieved and maintained by the sum of all of the processes in the cell that ensure the faithful duplication and repair of DNA, as well as its genetic transmission from one cell division to the next. As central players in virtually all of the DNA transactions that occur in vivo, DNA helicases (molecular motors that unwind double-stranded DNA to produce single-stranded substra...

Maintaining epithelial integrity

The Short stop (Shot/Kakapo) spectraplakin is a giant cytoskeletal protein, which exists in multiple isoforms with characteristics of both spectrin and plakin superfamilies. Previously characterized Shot isoforms are similar to spectrin and dystrophin, with an actin-binding domain followed by spectrin repeats. We describe a new large exon within the shot locus, which encodes a series of plakin ...

Roles of DNA Base Excision Repair in Maintaining the Integrity of DNA Methylation