Biology / Bio 1243 · Atom · ~20 seconds
Nucleotide Excision Repair
Video not yet published
to the StudyWalks catalog
to the StudyWalks catalog
State
Nucleotide excision repair removes a damaged DNA stretch, such as one from ultraviolet light, and resynthesizes it from the intact complementary strand.
Show
UV damage that distorts the helix is cut out on both sides, and DNA polymerase and ligase fill and seal the gap.
Watch for
This pathway repairs damage from an external source such as UV — mismatch repair already handles replication errors.