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Title | Highly conserved ribosome biogenesis pathways between human and yeast revealed by the MDN1-NLE1 interaction and NLE1 containing pre-60S subunits. |
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Journal, issue, pages | Nucleic Acids Res, Vol. 53, Issue 7, Year 2025 |
Publish date | Apr 10, 2025 |
![]() | Federica Fiorentino / Matthias Thoms / Klemens Wild / Timo Denk / Jingdong Cheng / Jakub Zeman / Irmgard Sinning / Ed Hurt / Roland Beckmann / ![]() ![]() |
PubMed Abstract | The assembly of ribosomal subunits, primarily occurring in the nucleolar and nuclear compartments, is a highly complex process crucial for cellular function. This study reveals the conservation of ...The assembly of ribosomal subunits, primarily occurring in the nucleolar and nuclear compartments, is a highly complex process crucial for cellular function. This study reveals the conservation of ribosome biogenesis between yeast and humans, illustrated by the structural similarities of ribosomal subunit intermediates. By using X-ray crystallography and cryo-EM, the interaction between the human AAA+ ATPase MDN1 and the 60S assembly factor NLE1 is compared with the yeast homologs Rea1 and Rsa4. The MDN1-MIDAS and NLE1-Ubl complex structure at 2.3 Å resolution mirrors the highly conserved interaction patterns observed in yeast. Moreover, human pre-60S intermediates bound to the dominant negative NLE1-E85A mutant revealed at 2.8 Å resolution an architecture that largely matched the equivalent yeast structures. Conformation of rRNA, assembly factors and their interaction networks are highly conserved. Additionally, novel human pre-60S intermediates with a non-rotated 5S RNP and processed ITS2/foot structure but incomplete intersubunit surface were identified to be similar to counterparts observed in yeast. These findings confirm that the MDN1-NLE1-driven transition phase of the 60S assembly is essentially identical, supporting the idea that ribosome biogenesis is a highly conserved process across eukaryotic cells, employing an evolutionary preservation of ribosomal assembly mechanisms. |
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Methods | EM (single particle) / X-ray diffraction |
Resolution | 2.3 - 7.88 Å |
Structure data | ![]() EMDB-19287: Human pre-60S - State 6 - Consensus refinement ![]() EMDB-19288: Human pre-60S - State 4 - Foot - local refinement ![]() EMDB-19289: Human pre-60S - State 6 - RIX1 complex - local refinement ![]() EMDB-19290: Human pre-60S - State 4 - GNL2 - local refinement ![]() EMDB-19291: Human pre-60S - State 4 - 5S RNP - NLE1 - local refinement ![]() EMDB-19292: Human pre-60S - State 4 - Consensus refinement ![]() EMDB-19293: Human pre-60S - State 1D - Mask II - local refinement ![]() EMDB-19294: Human pre-60S - State 1D - Mask I - local refinement ![]() EMDB-19295: Human pre-60S - State 1D - GNL2 - local refinement ![]() EMDB-19296: Human pre-60S - State 1D - 5S RNP - NLE1 - local refinement ![]() EMDB-19297: Human pre-60S - State 1D - Consensus refinement ![]() EMDB-19298: Human pre-60S - State 1C - Mask II - local refinement ![]() EMDB-19299: Human pre-60S - State 1C - Mask I - local refinement ![]() EMDB-19300: Human pre-60S - State 1C - GNL2 - local refinement ![]() EMDB-19301: Human pre-60S - State 1C - 5S RNP - NLE1 - local refinement ![]() EMDB-19302: Human pre-60S - State 1C - Consensus refinement ![]() EMDB-19303: Human pre-60S - State 5 - MRTO4/uL11 - local refinement ![]() EMDB-19304: Human pre-60S - State 5 - GNL2 - local refinement ![]() EMDB-19305: Human pre-60S - State 5 - 5S RNP - NLE1 - local refinement ![]() EMDB-19306: Human pre-60S - State 5 - Consensus refinement ![]() EMDB-19307: Human pre-60S - State 3 - Mask - local refinement ![]() EMDB-19308: Human pre-60S - State 3 - GNL2 - local refinement ![]() EMDB-19309: Human pre-60S - State 3 - 5S RNP - NLE1 - local refinement ![]() EMDB-19310: Human pre-60S - State 1A - Consensus refinement ![]() EMDB-19311: Human pre-60S - State 2 - Mask - local refinement ![]() EMDB-19312: Human pre-60S - State 2 - GNL2 - local refinement ![]() EMDB-19313: Human pre-60S - State 2 - 5S RNP - NLE1 - local refinement ![]() EMDB-19314: Human pre-60S - State 2 - Consensus refinement ![]() EMDB-19315: Human pre-60S - State 1B - Mask II - local refinement ![]() EMDB-19316: Human pre-60S - State 1B - Mask I - local refinement ![]() EMDB-19317: Human pre-60S - State 1B - GNL2 - local refinement ![]() EMDB-19318: Human pre-60S - State 1A - Mask II - local refinement ![]() EMDB-19319: Human pre-60S - State 1B - 5S RNP - NLE1 - local refinement ![]() EMDB-19320: Human pre-60S - State 1B - Consensus refinement ![]() EMDB-19321: Human pre-60S - State 1A - Mask I - local refinement ![]() EMDB-19322: Human pre-60S - State 1A - GNL2 - local refinement ![]() EMDB-19323: Human pre-60S - State 1A - 5S RNP - NLE1 - local refinement ![]() EMDB-19324: Human pre-60S - State 1A - Consensus refinement ![]() EMDB-19325: Human pre-60S - State 7 EMDB-19330, PDB-8rl2: EMDB-53196, PDB-9qiw: ![]() PDB-8ql1: |
Chemicals | ![]() ChemComp-MG: ![]() ChemComp-HOH: ![]() ChemComp-ZN: ![]() ChemComp-GTP: ![]() ChemComp-GDP: |
Source |
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![]() | RIBOSOME / AAA+ ATPase / Metal ion dependent adhesion site (MIDAS) / Ubiquitin-like domain (Ubl) / pre-60S biogenesis / Human / ribosome biogenesis / RIX1 complex / 5S RNP / NLE1 |