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

Simon Jarman; Nicholas Elliott; Stephen Nicol; Andrew McMinn; Stuart Newman

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

Simon Jarman, Nicholas Elliott, Stephen Nicol, Andrew McMinn, Stuart Newman

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	23-26
Number of pages	4
Journal	Antarctic Science
Volume	11
Issue number	1
Publication status	Published - 1 Mar 1999
Externally published	Yes

Cite this

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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.",

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AU - Nicol, Stephen

AU - McMinn, Andrew

AU - Newman, Stuart

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N2 - 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.

AB - 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.

KW - Base composition

KW - DNA

KW - Euphausia superba Dana

KW - Krill

KW - Ozone depletion

KW - UV-B

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M3 - Article

AN - SCOPUS:0033101831

SN - 0954-1020

VL - 11

SP - 23

EP - 26

JO - Antarctic Science

JF - Antarctic Science

IS - 1

ER -

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

Abstract

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