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-Structure paper
Title | Cryo-EM reveals mechanisms of natural RNA multivalency. |
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Journal, issue, pages | Science, Page eadv3451, Year 2025 |
Publish date | Mar 13, 2025 |
![]() | Liu Wang / Jiahao Xie / Tao Gong / Hao Wu / Yifan Tu / Xin Peng / Sitong Shang / Xinyu Jia / Haiyun Ma / Jian Zou / Sheng Xu / Xin Zheng / Dong Zhang / Yang Liu / Chong Zhang / Yongbo Luo / Zirui Huang / Bin Shao / Binwu Ying / Yu Cheng / Yingqiang Guo / Ying Lai / Dingming Huang / Jianquan Liu / Yuquan Wei / Siqi Sun / Xuedong Zhou / Zhaoming Su / ![]() |
PubMed Abstract | Homo-oligomerization of biological macromolecules leads to functional assemblies that are critical to understanding various cellular processes. However, RNA quaternary structures have been rarely ...Homo-oligomerization of biological macromolecules leads to functional assemblies that are critical to understanding various cellular processes. However, RNA quaternary structures have been rarely reported. Comparative genomics analysis has identified RNA families containing hundreds of sequences that adopt conserved secondary structures and likely fold into complex three-dimensional (3D) structures. We use cryo-electron microscopy (cryo-EM) to determine structures from four RNA families, including ARRPOF and OLE forming dimers, and ROOL and GOLLD forming hexameric, octameric and dodecameric nanostructures, at 2.6 to 4.6 Å resolutions. These homo-oligomeric assemblies reveal a plethora of structural motifs that contribute to RNA multivalency, including kissing loop, palindromic base-pairing, A-stacking, metal ion coordination, pseudoknot and minor-groove interactions. These results provide the molecular basis of intermolecular interactions driving RNA multivalency with potential functional relevance. |
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Methods | EM (single particle) |
Resolution | 2.6 - 6.61 Å |
Structure data | EMDB-60850, PDB-9isv: EMDB-61123: Enterococcus faecalis ncRNA tetramer EMDB-61125: Enterococcus faecalis ncRNA octamer EMDB-61189: lactobacillus salivarius ncRNA hexamer EMDB-62487: Fusobacterium ncRNA dimer EMDB-62489: Fusobacterium ncRNA dimer2 EMDB-62721: Streptococcus agalactiae ncRNA decocamer ![]() EMDB-62724: Streptococcus agalactiae GOLLD RNA 3' domain dodecamer EMDB-62991: Clostridium botulinum ncRNA homo-dimer EMDB-63218, PDB-9lmf: |
Chemicals | ![]() ChemComp-MG: |
Source |
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![]() | RNA / CryoEM / ncRNA |