Article (Scientific journals)
Molecular organization of selected prokaryotic S-Iayer proteins
Claus, Harald; Akça, Erol; Debaerdemaeker, Tony et al.
2005In Canadian Journal of Microbiology, 51, p. 731-743
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Keywords :
prokaryotes; cell walls; S-layer (glyco-) proteins; protein stabilization
Abstract :
[en] Regular crystalline surface layers (S-layers) are widespread among prokaryotes and probably represent the earliest cell wall structures. S-layer genes have been found in approximately 400 different species of the prokaryotic domains bacteria and archaea. S-layers usually consist of a single (glyco-rprotein species with molecular masses ranging from about 40 to 200 kDa that form lattices of oblique, tetragonal, or hexagonal architecture. The primary sequences of hyperthermophilic archaeal species exhibit some characteristic signatures, Further adaptations to their specific environments occur by various post-translational modifications, such as linkage of glycans, lipids, phosphate, and sulfate groups to the protein or by proteolytic processing. Specific domains direct the anchoring of the S-layer to the underlying cell wall components and transport across the cytoplasma memhrane. In addition to their presumptive original role as protective coats in archaea and bacteria, they have adapted new functions, e.g., as molecular sieves, attachment sites for extracellular enzymes, and virulence factors.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Claus, Harald;  Johannes Gutenberg Universität, Mainz
Akça, Erol;  Johannes Gutenberg Universität, Mainz
Debaerdemaeker, Tony;  Universität Ulm
Evrard, Christine ;  Université Catholique de Louvain - UCL > Département de Chimie > Unité de Chimie Structurale
Declercq, Jean-Paul;  Université Catholique de Louvain - UCL > Département de Chimie > Unité de Chimie Structurale
Harris, J. Robin;  Johannes Gutenberg Universität, Mainz
Schlott, Bernhard;  Institut für Molekulare Biotechnologie, Jena
König, Helmut;  Johannes Gutenberg Universität, Mainz
Language :
English
Title :
Molecular organization of selected prokaryotic S-Iayer proteins
Publication date :
2005
Journal title :
Canadian Journal of Microbiology
ISSN :
0008-4166
eISSN :
1480-3275
Publisher :
NRC Research Press, Ottawa, Canada
Volume :
51
Pages :
731-743
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 27 May 2010

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