New insight into the molecular mechanisms of two-partner secretion.
Two-partner secretion (TPS) systems, which export large proteins to the surface and/or extracellular milieu of Gram-negative bacteria, are members of a large superfamily of protein translocation systems that are widely distributed in animals, plants and fungi, in addition to nearly all groups of Gram-negative bacteria. Recent intense research on TPS systems has provided new insight into the structure and topology of the outer membrane translocator proteins and the large exoproteins that they secrete, the interactions between them, and mechanisms for retention of some of the secreted proteins on the bacterial surface. Evidence for secretion-dependent folding of mature exoproteins has also been obtained. Together, these findings provide a deeper understanding of the molecular mechanisms underlying these simple but elegant secretion systems.
Mazar
Joseph
J
Department of Molecular, Cellular and Developmental Biology, University of California-Santa Barbara, Santa Barbara, CA 93106-9610, USA.
Cotter
Peggy A
PA
D000595:Amino Acid Sequence; D001425:Bacterial Outer Membrane Proteins / Q000737:chemistry / Q000378:metabolism*; D006090:Gram-Negative Bacteria / Q000378:metabolism*; D026901:Membrane Transport Proteins / Q000737:chemistry / Q000378:metabolism*; D008954:Models, Biological; D008969:Molecular Sequence Data; D017510:Protein Folding; D017434:Protein Structure, Tertiary; D021381:Protein Transport
D001425:Bacterial Outer Membrane Proteins; D026901:Membrane Transport Proteins