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Updated: Jun 22, 2025

Studying Protein Import into Chloroplasts Using Protoplasts
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Studying Protein Import into Chloroplasts Using Protoplasts

Published on: December 10, 2018

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一个货物分类受体通过分泌途径调解叶绿体蛋白贩运

Jinling Liu1, Hong Chen1, Li Liu1

  • 1College of Biological Sciences, China Agricultural University, Beijing 100193, China.

The Plant cell
|July 4, 2024
PubMed
概括

科学家们发现了一种新的货物分类受体,MtTP930,对于通过分泌途径运输核编码的叶绿体蛋白质至关重要. 这一发现澄清了植物中的质细胞蛋白贩运机制.

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Protein Transport to the Thylakoids01:22

Protein Transport to the Thylakoids

Thylakoids are membrane-bound sac-like structures within the chloroplast that serve as sites for photosynthesis. Thylakoid lumen contains many electron transport proteins and is enclosed by a thylakoid membrane rich in the light-harvesting complex. Proteins targeted to the thylakoids are transported as precursors and are sorted by the general TOC/TIC import pathway. Once the precursor reaches the stroma, stromal processing peptidases remove their transit signal and expose thylakoid signal...
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Overview of Protein Sorting and Transport01:45

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Protein Transport to the Inner Chloroplast Membrane01:18

Protein Transport to the Inner Chloroplast Membrane

Proteins targeted to the inner chloroplast membrane, or plastid proteins, are transported by two general pathways: the stop-transfer and the re-insertion or post-import pathways. Most plastid proteins carry N-terminal transit sequences and internal import sequences targeting it to the specific chloroplast subcompartment. Proteins targeted by the stop-transfer pathway have internal hydrophobic sequences that inhibit their translocation into the stroma. As a result, these precursors are arrested...
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Protein Transport to the Stroma01:24

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Protein Transport to the Outer Chloroplast Membrane01:11

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Mitochondrial Protein Sorting01:39

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Mitochondria are double-membrane organelles of the eukaryotes involved in cellular metabolism, signaling, ATP synthesis, and programmed cell death.  Each of these processes requires specific proteins and enzymes that must be correctly sorted to the right mitochondrial subcompartment for the proper functioning of the organelle.
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