Pex19p contributes to peroxisome inheritance in the association of peroxisomes to Myo2p.
Traffic
; 13(7): 947-59, 2012 Jul.
Article
en En
| MEDLINE
| ID: mdl-22486971
ABSTRACT
During budding of yeast cells peroxisomes are distributed over mother cell and bud, a process that involves the myosin motor protein Myo2p and the peroxisomal membrane protein Inp2p. Here, we show that Pex19p, a peroxin implicated in targeting and complex formation of peroxisomal membrane proteins, also plays a role in peroxisome partitioning. Binding studies revealed that Pex19p interacts with the cargo-binding domain of Myo2p. We identified mutations in Myo2p that specifically reduced binding to Pex19p, but not to Inp2p. The interaction between Myo2p and Pex19p was also reduced by a mutation that blocked Pex19p farnesylation. Microscopy revealed that the Pex19p-Myo2p interaction is important for peroxisome inheritance, because mutations that affect this interaction hamper peroxisome inheritance in vivo. Together these data suggest that both Inp2p and Pex19p are required for proper association of peroxisomes to Myo2p.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Saccharomyces cerevisiae
/
Receptores Citoplasmáticos y Nucleares
/
Cadenas Pesadas de Miosina
/
Peroxisomas
/
Miosina Tipo V
/
Proteínas de Saccharomyces cerevisiae
/
Proteínas de la Membrana
Tipo de estudio:
Risk_factors_studies
Idioma:
En
Revista:
Traffic
Asunto de la revista:
FISIOLOGIA
Año:
2012
Tipo del documento:
Article
País de afiliación:
Países Bajos