The internal repeats in the Na+/Ca2+ exchanger-related Escherichia coli protein YrbG have opposite membrane topologies.
J Biol Chem
; 276(22): 18905-7, 2001 Jun 01.
Article
en En
| MEDLINE
| ID: mdl-11259419
We have determined the topology of the Escherichia coli inner membrane protein YrbG, a putative Na(+)/Ca(2+) exchanger with homology to a family of eukaryotic ion exchangers. Our results show that the two homologous halves of YrbG both have five transmembrane segments but opposite membrane orientations. This has implications for our understanding of the function of Na(+)/Ca(2+) exchangers and provides an example of "divergent" evolution of membrane protein topology.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Membrana Celular
/
Intercambiador de Sodio-Calcio
/
Escherichia coli
Idioma:
En
Revista:
J Biol Chem
Año:
2001
Tipo del documento:
Article
País de afiliación:
Suecia
Pais de publicación:
Estados Unidos