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Targeting Proteins to the Mitochondria and Chloroplast definitions

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Termini in questo insieme (15)

  • Signal Sequence
    Short amino acid stretch that directs a protein to a specific organelle or subcompartment, ensuring accurate cellular localization.
  • Chaperone Protein
    Molecule that binds to unfolded proteins, guiding them to organelles and assisting in their refolding after import.
  • ATP Hydrolysis
    Energy-releasing process used to detach chaperones from proteins, enabling their entry into organelles.
  • TOM Complex
    Protein assembly in the mitochondrial outer membrane that recognizes and transports precursor proteins into the intermembrane space.
  • TOC Complex
    Protein assembly in the chloroplast outer membrane responsible for recognizing and importing precursor proteins.
  • TIM Complex
    Inner mitochondrial membrane structure that facilitates protein translocation into the mitochondrial matrix using a hydrogen gradient.
  • TIC Complex
    Inner chloroplast membrane structure that mediates protein import into the chloroplast stroma, requiring specific energy input.
  • Hydrogen Gradient
    Electrochemical difference across a membrane, providing energy for protein translocation into organelle interiors.
  • Intermembrane Space
    Region between the outer and inner membranes of mitochondria or chloroplasts where imported proteins temporarily reside.
  • Cristae
    Folded inner membrane structures within mitochondria, increasing surface area for metabolic processes.
  • Thylakoid
    Membranous compartment inside chloroplasts, essential for photosynthetic reactions and protein targeting.
  • Start Transfer Sequence
    Amino acid segment that initiates insertion of a protein into a membrane during translocation.
  • Stop Transfer Sequence
    Amino acid segment that halts further translocation, anchoring the protein within the membrane.
  • Subcompartment
    Distinct internal region within an organelle, such as cristae or thylakoids, requiring specialized protein targeting.
  • Transmembrane Protein
    Molecule spanning a membrane, often inserted via start and stop transfer sequences during organelle import.