Curium has no known essential biological function. Biosorption of
Cm3+ by bacteria and archaea has been reported (Moll et al, 2004; Ozaki et al, 2002).
For more information:
Medline for curium AND bacteria
Ozaki T, Gillow JB, Francis AJ, Kimura T, Ohnuki T, Yoshida Z.
Association of Eu(III) and Cm(III) with Bacillus
subtilis and Halobacterium salinarium. J Nucl Sci Technol.