Protein export in prokaryotes and eukaryotes. Theme with variations.
Protein export in prokaryotes as well as in eukaryotes can be defined as protein transport across the plasma membrane. In both types of organisms there are various apparently ATP-dependent transport mechanisms which can be distinguished from one another and which show similarities when the prokaryotic mechanism is compared with the respective eukaryotic mechanism. First, one can distinguish between transport mechanisms which involve so-called signal or leader peptides and those which do not. The latter mechanisms seem to employ ATP-dependent transport systems which belong to the family of oligopeptide permeases and multiple drug resistance proteins. Second, in signal or leader peptide-dependent transport one can distinguish between transport mechanisms which involve ribonucleoparticles and those which employ molecular chaperones. Both mechanisms appear to converge at the level of ATP-dependent translocases.
Wiech
H
H
Zentrum Biochemie/Abteilung Biochemie II der Georg-August-Universität Göttingen, Germany.
Klappa
P
P
Zimmerman
R
R
D000818:Animals; D001426:Bacterial Proteins / Q000378:metabolism; D001693:Biological Transport, Active; D002352:Carrier Proteins / Q000378:metabolism; D002462:Cell Membrane / Q000378:metabolism*; D004285:Dogs; D004926:Escherichia coli / Q000378:metabolism; D005656:Fungal Proteins / Q000378:metabolism; D026901:Membrane Transport Proteins / Q000378:metabolism; D008954:Models, Biological; D021382:Protein Sorting Signals / Q000378:metabolism; D011506:Proteins / Q000378:metabolism*; D012269:Ribosomal Proteins / Q000378:metabolism; D015003:Yeasts / Q000378:metabolism
D001426:Bacterial Proteins; D002352:Carrier Proteins; D005656:Fungal Proteins; D026901:Membrane Transport Proteins; D021382:Protein Sorting Signals; D011506:Proteins; D012269:Ribosomal Proteins