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- Title
Possible role of a taurine transporter in the deep-sea mussel Bathymodiolus septemdierum in adaptation to hydrothermal vents
- Authors
Inoue, Koji; Tsukuda, Kimihiko; Koito, Tomoko; Miyazaki, Yoshiko; Hosoi, Masatomi; Kado, Ryusuke; Miyazaki, Nobuyuki; Toyohara, Haruhiko
- Abstract
Abstract: Various invertebrates inhabiting hydrothermal vents possess sulfur-oxidizing bacteria in their tissues; however, the mechanisms by which toxic sulfides are delivered to these endosymbionts remain unknown. Recently, detoxification of sulfides using thiotaurine, a sulfur-containing amino acid, has been suggested. In this study, we propose the involvement of a taurine transporter in sulfide detoxification in the deep-sea mussel Bathymodiolus septemdierum by demonstrating: (i) the abundance of its mRNA in the gill; (ii) its activity under a wide range of salinities; (iii) its low Michaelis constant value in taurine transportation; and (iv) its affinity for thiotaurine and the thiotaurine precursor, hypotaurine.
- Subjects
INVERTEBRATES; HYDROTHERMAL vents; TAURINE; MESSENGER RNA
- Publication
FEBS Letters, 2008, Vol 582, Issue 10, p1542
- ISSN
0014-5793
- Publication type
Article
- DOI
10.1016/j.febslet.2008.03.052