Université de Fribourg

The dedicated chaperone Acl4 escorts ribosomal protein Rpl4 to its nuclear pre-60S assembly site

Pillet, Benjamin ; García-Gómez, Juan J. ; Pausch, Patrick ; Falquet, Laurent ; Bange, Gert ; Cruz, Jesús de la ; Kressler, Dieter

In: PLoS Genet, 2015, vol. 11, no. 10, p. e1005565

Ribosomes are the highly complex macromolecular assemblies dedicated to the synthesis of all cellular proteins from mRNA templates. The main principles underlying the making of ribosomes are conserved across eukaryotic organisms and this process has been studied in most detail in the yeast Saccharomyces cerevisiae. Yeast ribosomes are composed of four ribosomal RNAs (rRNAs) and 79 ribosomal...

Université de Fribourg

Co-translational capturing of nascent ribosomal proteins by their dedicated chaperones

Pausch, Patrick ; Singh, Ujjwala ; Ahmed, Yasar Luqman ; Pillet, Benjamin ; Murat, Guillaume ; Altegoer, Florian ; Stier, Gunter ; Thoms, Matthias ; Hurt, Ed ; Sinning, Irmgard ; Bange, Gert ; Kressler, Dieter

In: Nature Communications, 2015, vol. 6, p. 7494

Exponentially growing yeast cells produce every minute >160,000 ribosomal proteins. Owing to their difficult physicochemical properties, the synthesis of assembly-competent ribosomal proteins represents a major challenge. Recent evidence highlights that dedicated chaperone proteins recognize the N-terminal regions of ribosomal proteins and promote their soluble expression and delivery to the...