Dna Repair in a sentence

These mechanisms range from DNA, mRNA and protein repair, to internal lysosomic digestion of defective proteins, and even induced cell suicide—apoptosis Sancar, A. et al Molecular mechanisms of mammalian DNA repair and the DNA damage checkpoints.

Very low dNTP concentration inhibits DNA synthesis and DNA repair and is lethal to the cell, while an abnormal ratio of dNTPs is mutagenic due to the increased likelihood of the DNA polymerase incorporating the wrong dNTP during DNA synthesis.

Errors introduced during DNA repair seeAlso Although naturally occurring double-strand breaks occur at a relatively low frequency in DNA, their repair often causes mutation.

Mutations can ordinarily be avoided if accurate DNA repair systems recognize DNA damage and repair it prior to completion of the next round of replication.

One major highlight of the decoded genome, which is one and a half times larger than that of humans, is that sequence changes were found tied to DNA repair, DNA damage response and DNA damage tolerance.

DNA ligase is used in both DNA repair and DNA replication (see Mammalian ligases ).

For example, naked double-stranded DNA ends would usually be interpreted by the cell as damaged or viral DNA, triggering cell cycle arrest, DNA repair or destruction of the fragment, such as by endonucleases in bacteria.

The tests detect certain proteins associated with a DNA repair mechanism called mismatch repair (MMR), and aid in differentiating between sporadic colorectal cancer and probable Lynch syndrome, a hereditary form of colorectal cancer.

Also, there isn't just one kind of DNA damage or DNA repair.

Surprisingly, RNase H2 expression in S phase actually induced more DNA damage, which required a special type of DNA repair called homologous recombination to fix.

Because DNA can be damaged in many ways, the process of DNA repair is an important way in which the body protects itself from disease.

DNA damages are repaired by the DNA repair system of the cell.

DNA damages are subject to error-prone DNA repair or can cause replication errors.

DNA repair pathways can only recognize and act on "abnormal" structures in the DNA.

Examples include C → U and A → HX ( hypoxanthine ), which can be corrected by DNA repair mechanisms; and 5MeC ( 5-methylcytosine ) → T, which is less likely to be detected as a mutation because thymine is a normal DNA base.

Impaired DNA repair mechanisms may contribute to earlier depletion of the ovarian reserve during aging. citation As women age, double-strand breaks accumulate in the DNA of their primordial follicles.

Rat primary hepatocytes may also be used to measure DNA repair following DNA damage.

This can lead to a point mutation if not repaired by the DNA repair enzymes such as uracil glycosylase, which cleaves a uracil in DNA.

In a new study, researchers identified a network of 81 genes that were found only in Greenland sharks and are known to play a role in DNA repair.

Sperm have poorer DNA repair machinery than eggs, causing males to pass on more mutations to the next generation than females with advancing age, a pattern observed across vertebrate animals.