7BL5

pre-50S-ObgE particle

Summary for 7BL5

• Entry DOI: 10.2210/pdb7bl5/pdb
• EMDB information: 12218
• Descriptor: 50S ribosomal protein L2, 50S ribosomal protein L21, 50S ribosomal protein L22, ... (39 entities in total)
• Functional Keywords: ribosome, pre-50s, ribosome biogenesis, ribosome assembly
• Biological source: Escherichia coli str. K-12 substr. MG1655; More
• Total number of polymer chains: 35
• Total formula weight: 1490379.57

Authors

Hilal, T.,Nikolay, R.,Spahn, C.M.T.,Schmidt, S. (deposition date: 2021-01-18, release date: 2021-05-12, Last modification date: 2025-04-09)

Primary citation

Nikolay, R.,Hilal, T.,Schmidt, S.,Qin, B.,Schwefel, D.,Vieira-Vieira, C.H.,Mielke, T.,Burger, J.,Loerke, J.,Amikura, K.,Flugel, T.,Ueda, T.,Selbach, M.,Deuerling, E.,Spahn, C.M.T.
Snapshots of native pre-50S ribosomes reveal a biogenesis factor network and evolutionary specialization.
Mol.Cell, 81:1200-1215.e9, 2021

PubMed Abstract: Ribosome biogenesis is a fundamental multi-step cellular process that culminates in the formation of ribosomal subunits, whose production and modification are regulated by numerous biogenesis factors. In this study, we analyze physiologic prokaryotic ribosome biogenesis by isolating bona fide pre-50S subunits from an Escherichia coli strain with the biogenesis factor ObgE, affinity tagged at its native gene locus. Our integrative structural approach reveals a network of interacting biogenesis factors consisting of YjgA, RluD, RsfS, and ObgE on the immature pre-50S subunit. In addition, our study provides mechanistic insight into how the GTPase ObgE, in concert with other biogenesis factors, facilitates the maturation of the 50S functional core and reveals both conserved and divergent evolutionary features of ribosome biogenesis between prokaryotes and eukaryotes.

PubMed: 33639093
DOI: 10.1016/j.molcel.2021.02.006

Experimental method

ELECTRON MICROSCOPY (3.3 Å)