Abstract
Radioactive selenite-75 has been used to investigate the metabolic transformation of inorganic selenium by the marine phytoplankters Tetraselmis tetrathele and Dunaliella minuta. The majority of radioselenium taken up from culture media during growth becomes associated with cellular protein. A small quantity of this protein-bound selenium can be volatilised by treatment with strong acid, suggesting the presence of hydrogen selenide. However, the principal fraction of selenium appears to be integrated into the primary protein structure. Enzymic hydrolysis of phytoplankton protein and subsequent chromatography of hydrolysates revealed the presence of seleno-analogues of the sulphur amino acids. Selenium amino acids were also detected in non-protein extracts.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.