File(s) not publicly available
The base composition of the krill genome and its potential susceptibility to damage by UV-B
journal contribution
posted on 2023-05-16, 11:48 authored by Jarman, SN, Elliott, N, Nicol, S, Andrew McMinnAndrew McMinn, Newman, SJWe have determined the base composition (percentage of guanine-cytosine base pairs, GC%) of total DNA from Euphausia superba to be 32% ± 0.5%. This is the lowest GC% recorded for a metazoan. Low GC% DNA has high concentrations of thymine (T) residues and consequently a greater abundance of adjacent T residues [T(n) arrays]. Ultraviolet B (280-320 nm, UV-B) radiation damages DNA primarily at (T)n arrays, so we suggest that krill DNA may be more susceptible to damage from increased levels of UV-B radiation over the Southern Ocean than the DNA of other Antarctic organisms.
History
Publication title
Antarctic ScienceVolume
11Pagination
23-26ISSN
0954-1020Department/School
Institute for Marine and Antarctic StudiesPublisher
Cambridge University PressPlace of publication
NY, USARepository Status
- Restricted