Periplasmic quality control in biogenesis of outer membrane proteins.
Biochem Soc Trans
; 43(2): 133-8, 2015 Apr.
Article
en En
| MEDLINE
| ID: mdl-25849907
The ß-barrel outer membrane proteins (OMPs) are integral membrane proteins that reside in the outer membrane of Gram-negative bacteria and perform a diverse range of biological functions. Synthesized in the cytoplasm, OMPs must be transported across the inner membrane and through the periplasmic space before they are assembled in the outer membrane. In Escherichia coli, Skp, SurA and DegP are the most prominent factors identified to guide OMPs across the periplasm and to play the role of quality control. Although extensive genetic and biochemical analyses have revealed many basic functions of these periplasmic proteins, the mechanism of their collaboration in assisting the folding and insertion of OMPs is much less understood. Recently, biophysical approaches have shed light on the identification of the intricate network. In the present review, we summarize recent advances in the characterization of these key factors, with a special emphasis on the multifunctional protein DegP. In addition, we present our proposed model on the periplasmic quality control in biogenesis of OMPs.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Proteínas de la Membrana Bacteriana Externa
/
Serina Endopeptidasas
/
Periplasma
/
Proteínas Periplasmáticas
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Proteínas de Unión al ADN
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Proteínas de Choque Térmico
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Biochem Soc Trans
Año:
2015
Tipo del documento:
Article
País de afiliación:
China
Pais de publicación:
Reino Unido