Germline Genome Protection on an Evolutionary Treadmill.

Yuh Chwen G Lee1, Mia T Levine2

  • 1Division of Biological Systems and Engineering, Lawrence Berkeley National Lab, One Cyclotron Road, Berkeley, CA 94720, USA.

Developmental Cell
|October 11, 2017
PubMed
Summary

Genome integrity is vital, but defense mechanisms change quickly. Researchers used an evolution-guided strategy to identify key genetic factors and understand how adaptive evolution shapes genome defense.

Related Concept Videos

Mismatch Repair01:20

Mismatch Repair

Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
6.7K
Mismatch Repair01:36

Mismatch Repair

Overview
43.9K
Replication in Eukaryotes01:29

Replication in Eukaryotes

In eukaryotic cells, DNA replication is highly conserved and tightly regulated. Multiple linear chromosomes must be duplicated with high fidelity before cell division, so there are many proteins that fulfill specialized roles in the replication process. Replication occurs in three phases: initiation, elongation, and termination, and ends with two complete sets of chromosomes in the nucleus.
Many Proteins Orchestrate Replication at the Origin
Eukaryotic replication follows many of the same...
17.9K
Replication in Eukaryotes02:31

Replication in Eukaryotes

Overview
206.2K
Gene Evolution - Fast or Slow?02:05

Gene Evolution - Fast or Slow?

The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
8.3K
Gene Evolution - Fast or Slow?02:05

Gene Evolution - Fast or Slow?

3.7K