tonB-independent ferrichrome-mediated iron transport in Escherichia coli spheroplasts.
AUTOR(ES)
Weaver, C A
RESUMO
Although a functional tonB gene product was required for ferrichrome-mediated iron transport in whole cells of Escherichia coli K-12, such transport did not require the tonB+ function in spheroplasts. We suggest that in spheroplasts ferrichrome has direct access to the cytoplasmic membrane and that this is reflected in tonB-independent accumulation of ferrichrome iron. Therefore, the tonB gene product does not function in the translocation of ferrichrome iron across the inner membrane.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=294548Documentos Relacionados
- Flagella of Escherichia coli spheroplasts.
- Relationship between the tonB locus and iron transport in Escherichia coli.
- Iron Transport in Escherichia coli: Uptake and Modification of Ferrichrome
- Transport of vitamin B12 in tonB mutants of Escherichia coli.
- E-0702, a new cephalosporin, is incorporated into Escherichia coli cells via the tonB-dependent iron transport system.
