Esteve-Núñez Abraham, Núñez Cinthia, Lovley Derek R
Department of Microbiology, University of Massachusetts, Morrill Science Center IVN, Amherst, MA 01003, USA.
J Bacteriol. 2004 May;186(9):2897-9. doi: 10.1128/JB.186.9.2897-2899.2004.
The presence of Fe(III), but not that of Fe(II), resulted in ca. 20-fold-lower levels of mRNA for fumarate reductase, inhibiting fumarate reduction and favoring utilization of fumarate as an electron donor in chemostat cultures of Geobacter sulfurreducens, despite the fact that growth yield with fumarate was 3-fold higher than with Fe(III).
三价铁(Fe(III))的存在而非二价铁(Fe(II))的存在,导致延胡索酸还原酶的mRNA水平降低了约20倍,抑制了延胡索酸的还原,并有利于在嗜硫地杆菌恒化器培养物中利用延胡索酸作为电子供体,尽管以延胡索酸为底物时的生长产量比以三价铁为底物时高3倍。