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Signals for Protein Targeting into and across Membranes

  • Gunnar von Heijne
Chapter
Part of the Subcellular Biochemistry book series (SCBI, volume 22)

Abstract

How can a newly synthesized protein navigate its way through the maze of organelles found inside a cell to reach its intended destination? This basic question has fascinated workers in cell and molecular biology for a long time; yet, we still do not have all the final answers. Some principles are clear, however. The targeting information is encoded within the nascent protein itself in the form of distinct “signals,” either in the form of stretches of amino acids or as surface patches made from discontinuous parts of the protein. These signals are recognized by receptors, which guide the protein to import machineries located in the appropriate organelle. The biochemistry of the various import pathways is covered in other chapters in this book; this chapter presents an overview of the sorting signals themselves, their sequences and structures, and possible modes of function.

Keywords

Signal Peptide Charge Amino Acid Transit Peptide Intermembrane Space Signal Recognition Particle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • Gunnar von Heijne
    • 1
    • 2
  1. 1.Department of Molecular BiologyKarolinska InstituteHuddingeSweden
  2. 2.Center for Structural BiochemistryNOVUMHuddingeSweden

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