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The base composition of the krill genome and its potential susceptibility to damage by UV-B

Citation

Jarman, SN and Elliott, N and Nicol, S and McMinn, A and Newman, SJ, The base composition of the krill genome and its potential susceptibility to damage by UV-B, Antarctic Science, 11, (1) pp. 23-26. ISSN 0954-1020 (1999) [Refereed Article]

Abstract

We 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.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Genetics
Research Field:Genome Structure and Regulation
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Environmental Sciences
Author:Jarman, SN (Dr Simon Jarman)
Author:McMinn, A (Professor Andrew McMinn)
Author:Newman, SJ (Mr Stuart Newman)
ID Code:16907
Year Published:1999
Web of Science® Times Cited:22
Deposited By:IASOS
Deposited On:1999-08-01
Last Modified:2000-05-20
Downloads:0

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