Mitochondrial Target Domain
Mitochondrial Target Domain - Related Videos
11:24
Targeted Labeling of Neurons in a Specific Functional Micro-domain of the Neocortex by Combining Intrinsic Signal and Two-photon Imaging
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Cited by 19 •
2012
A method is described for labeling neurons with fluorescent dyes in predetermined functional micro-domains of the neocortex. First, intrinsic signal optical imaging is used to obtain a functional map. Then two-photon microscopy is used to label and image neurons within a micro-domain of the map.
02:26
Conservation of Protein Domains Over Different Proteins
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2020
Protein domains are small structurally independent units that are part of a single amino acid chain. Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms. A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...
02:59
Animal Mitochondrial Genetics
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2020
Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
08:40
An Optimized Protocol to Analyze Glycolysis and Mitochondrial Respiration in Lymphocytes
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Cited by 38 •
2016
The study of metabolism is becoming increasingly relevant to immunological research. Here, we present an optimized method for measuring glycolysis and mitochondrial respiration in mouse splenocytes, and T and B lymphocytes.
02:19
Export of Mitochondrial and Chloroplast Genes
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2020
A eukaryotic cell can have up to three different types of genetic systems: nuclear, mitochondrial, and chloroplast. During evolution, organelles have exported many genes to the nucleus; this transfer is still ongoing in some plant species. Approximately 18% of the Arabidopsis thaliana nuclear genome is thought to be derived from the chloroplast’s cyanobacterial ancestor, and around 75% of the yeast genome derived from the mitochondria’s bacterial ancestor. This export has occurred irrespective...
FAQs
The key structural feature is an amphipathic alpha helix, with positively charged and less charged character arranged across the peptide. This organization helps the targeting region present a recognizable signal to mitochondrial import machinery rather than acting as an undifferentiated sequence. Its structure therefore connects peptide composition with delivery accuracy during protein localization studies.
Positive charge and the absence of acidic residues help distinguish a mitochondrial targeting signal from other protein regions. These compositional features contribute to recognition by receptors associated with the translocase of the outer membrane. The balance is therefore an important variable when researchers evaluate how effectively a targeting domain directs a protein toward mitochondria.
After receptors in the translocase of the outer membrane recognize the targeting signal, they guide the protein through mitochondrial import machinery. The targeting sequence may then be cleaved from the delivered protein. This processing separates the temporary delivery information from the mature protein and can be relevant when interpreting the final protein product.
Researchers can use a mitochondrial targeting domain to direct engineered proteins and fluorescent reporters toward mitochondria. This strategy links the localization signal to a chosen experimental cargo, allowing mitochondrial delivery to be examined through the behavior or position of that cargo. It is especially useful for studying protein localization and mitochondrial function.
Targeted fluorescent reporters can support investigations of where engineered proteins accumulate within cells, particularly in relation to mitochondria. Their localization helps researchers examine organelle distribution and connect protein placement with mitochondrial function. In broader studies, this approach contributes to understanding energy metabolism by placing experimental readouts at the organelle of interest.
Mitochondrial targeting domains are relevant because they provide a way to direct engineered proteins and therapeutic cargos to mitochondria. This capability supports research on mitochondrial dysfunction and disease-related organelle biology. By focusing experimental or therapeutic materials on mitochondria, researchers can investigate organelle function and explore strategies centered on mitochondrial delivery.