Article (Scientific journals)
Coping with cold: The genome of the versatile marine Antarctica bacterium Pseudoalteromonas haloplanktis TAC125
Medigue, C.; Krin, E.; Pascal, G. et al.
2005In Genome Research, 15 (10), p. 1325-1335
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Abstract :
[en] A considerable fraction of life develops in the sea at temperatures lower than 15 degrees C. Little is known about the adaptive features selected under those conditions. We present the analysis of the genome Sequence of the fast growing Antarctica bacterium Pseudoalteromonas haloplanktis TAC125. We find that it copes with the increased Solubility of oxygen at low temperature by multiplying dioxygen scavenging while deleting whole pathways producing reactive oxygen species. Dioxygen-consuming lipid desaturases achieve both protection against oxygen and synthesis of lipids making the membrane fluid. A remarkable strategy for avoidance of reactive oxygen species generation is developed by A haloplanktis, with elimination of the ubiquitous molybdopterin-dependent metabolism. The A haloplanktis proteome reveals a concerted amino acid usage bias specific to psychrophiles, consistently appearing apt to accommodate asparagine, a residue prone to make proteins age. Adding to its originality, A haloplanktis further differs from its marine Counterparts with recruitment of a plasmid origin of replication for its second chromosome.
Disciplines :
Biochemistry, biophysics & molecular biology
Microbiology
Biotechnology
Author, co-author :
Medigue, C.
Krin, E.
Pascal, G.
Barbe, V.
Bernsel, A.
Bertin, P. N.
Cheung, F.
Cruveiller, S.
D'Amico, Salvino ;  Université de Liège - ULiège > GIGA-Research
Duilio, A.
Fang, G.
Feller, Georges ;  Université de Liège - ULiège > Département des sciences de la vie > Labo de biochimie
Ho, C.
Mangenot, S.
Marino, G.
Nilsson, J.
Parrilli, E.
Rocha, E. P. C.
Rouy, Z.
Sekowska, A.
Tutino, M. L.
Vallenet, D.
von Heijne, G.
Danchin, A.
More authors (14 more) Less
Language :
English
Title :
Coping with cold: The genome of the versatile marine Antarctica bacterium Pseudoalteromonas haloplanktis TAC125
Publication date :
October 2005
Journal title :
Genome Research
ISSN :
1088-9051
eISSN :
1549-5469
Publisher :
Cold Spring Harbor Lab Press, Publications Dept, Woodbury, United States - New York
Volume :
15
Issue :
10
Pages :
1325-1335
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 26 January 2010

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