A minimal peptide sequence that targets fluorescent and functional proteins into the mitochondrial intermembrane space
ACS Chemical Biology, ISSN: 1554-8929, Vol: 2, Issue: 3, Page: 176-186
2007
- 27Citations
- 48Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations27
- Citation Indexes27
- CrossRef27
- 27
- Captures48
- Readers48
- 48
Article Description
Protein-based fluorescent and functional probes are widely used for real-time visualization, purification, and regulation of a variety of biological molecules. The protein-based probes can generally be targeted into subcellular compartments of eukaryotic cells by a particular short peptide sequence. Little is known, however, about the sequence that targets probes into the mitochondrial intermembrane space (IMS). To identify the IMS-targeting sequence, we developed a simple genetic screening method to discriminate the proteins localized in the IMS from those in the mitochondrial matrix, thereby revealing the minimum requisite sequence for the IMS targeting. An IMS-localized protein, Smac/ DIABLO, was randomly mutated, and the mitochondrial localization of each mutant was analyzed. We found that the four residues of Ala-Val-Pro-Ile are required for IMS localization, and a sequence of these four residues fused with matrix-targeting signals is sufficient for targeting the Smac/ DIABLO into the IMS. The sequence was shown to readily direct three dissimilar proteins of interest to the IMS, which will open avenues to elucidating the functions of the IMS in live cells. © 2007 by American Chemical Society.
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