Iron uptake and regulation in Schizosaccharomyces pombe.
Curr Opin Microbiol
; 16(6): 669-76, 2013 Dec.
Article
em En
| MEDLINE
| ID: mdl-23916750
ABSTRACT
Schizosaccharomyces pombe is a useful model system for understanding many aspects of eukaryotic cell growth. Studies of S. pombe have identified novel genes that function in the regulation of iron homeostasis. In response to high levels of iron, Fep1 represses the expression of several genes involved in the acquisition of iron. When iron levels are limited, optimization of cellular iron utilization is coordinated by Php4, which represses genes encoding iron-using proteins. Results from studies in yeast have shed new light on the role of monothiol glutaredoxins (Grxs) in iron homeostasis. In S. pombe, the Grx4 protein serves as an inhibitory partner for Fep1 in response to iron deficiency, whereas it is required for the inhibition of Php4 under iron-replete conditions.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Schizosaccharomyces
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Regulação Fúngica da Expressão Gênica
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Homeostase
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Ferro
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article