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Heme plays pivotal roles in various cellular processes as well as in iron homeostasis in living systems. Here, we report a genetically encoded fluorescence resonance energy transfer (FRET) sensor for selective heme imaging by employing a pair of bacterial heme transfer chaperones as the sensory components. This heme-specific probe allows spatial-temporal visualization of intracellular heme distribution within living cells.
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Song et al. (2015) studied this question.
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