Human RECQ helicases: Roles in DNA metabolism, mutagenesis and cancer biology
نویسندگان
چکیده
منابع مشابه
Human RECQ helicases: roles in DNA metabolism, mutagenesis and cancer biology.
Helicases use the energy of ATP hydrolysis to separate double-stranded nucleic acids to facilitate essential processes such as replication, recombination, transcription and repair. This article focuses on the human RECQ helicase gene and protein family. Loss of function of three different members has been shown to cause Bloom syndrome (BS), Werner syndrome (WS) and Rothmund-Thomson syndrome (RT...
متن کاملHuman premature aging, DNA repair and RecQ helicases
Genomic instability leads to mutations, cellular dysfunction and aberrant phenotypes at the tissue and organism levels. A number of mechanisms have evolved to cope with endogenous or exogenous stress to prevent chromosomal instability and maintain cellular homeostasis. DNA helicases play important roles in the DNA damage response. The RecQ family of DNA helicases is of particular interest since...
متن کاملRecql5 and Blm RecQ DNA helicases have nonredundant roles in suppressing crossovers.
In eukaryotes, crossovers in mitotic cells can have deleterious consequences and therefore must be suppressed. Mutations in BLM give rise to Bloom syndrome, a disease that is characterized by an elevated rate of crossovers and increased cancer susceptibility. However, simple eukaryotes such as Saccharomyces cerevisiae have multiple pathways for suppressing crossovers, suggesting that mammals al...
متن کاملA conserved G4 DNA binding domain in RecQ family helicases.
RecQ family helicases play important roles at G-rich domains of the genome, including the telomeres, rDNA, and immunoglobulin switch regions. This appears to reflect the unusual ability of enzymes in this family to unwind G4 DNA. How RecQ family helicases recognize this substrate has not been established. Here, we show that G4 DNA is a preferred target for BLM helicase within the context of lon...
متن کاملMechanisms of RecQ helicases in pathways of DNA metabolism and maintenance of genomic stability.
Helicases are molecular motor proteins that couple the hydrolysis of NTP to nucleic acid unwinding. The growing number of DNA helicases implicated in human disease suggests that their vital specialized roles in cellular pathways are important for the maintenance of genome stability. In particular, mutations in genes of the RecQ family of DNA helicases result in chromosomal instability diseases ...
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ژورنال
عنوان ژورنال: Seminars in Cancer Biology
سال: 2010
ISSN: 1044-579X
DOI: 10.1016/j.semcancer.2010.10.002