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Interaction of the cotranslational Hsp70 Ssb with ribosomal proteins and rRNA depends on its lid domain

Gumiero, Andrea; Conz, Charlotte; Gesé, Genís Valentín; Zhang, Ying; Weyer, Felix Alexander; Lapouge, Karine; Kappes, Julia; von Plehwe, Ulrike; Schermann, Géza; Fitzke, Edith; Wölfle, Tina; Fischer, Tamás; Rospert, Sabine; Sinning, Irmgard


Cotranslational chaperones assist in de novo folding of nascent polypeptides in all organisms. In yeast, the heterodimeric ribosome-associated complex (RAC) forms a unique chaperone triad with the Hsp70 homologue Ssb. We report the X-ray structure of full length Ssb in the ATP-bound open conformation at 2.6 Å resolution and identify a positively charged region in the α-helical lid domain (SBDα), which is present in all members of the Ssb-subfamily of Hsp70s. Mutational analysis demonstrates...[Show more]

CollectionsANU Research Publications
Date published: 2016-11-24
Type: Journal article
Source: Nature communications
DOI: 10.1038/ncomms13563


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