Abstract:Magnetosomes are unique organelles synthesized by magnetotactic bacteria (MTB) for magnetic navigation. Their complex biosynthesis is controlled by large magnetosome gene clusters (MGC). Here, we report the discovery and comprehensive analysis of silent but functional MGCs in the non-magnetotactic phototrophic bacterium Rhodovastum atsumiense. Our findings suggest that these MGCs were acquired by horizontal gene transfer and inactivated through transcriptional silencing and antisense RNA regulation. At least s… Show more
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