Structure of a eukaryotic cytoplasmic pre‐40S ribosomal subunit
Final maturation of eukaryotic ribosomes occurs in the cytoplasm and requires the sequential removal of associated assembly factors and processing of the immature 20S pre‐RNA. Using cryo‐electron microscopy (cryo‐EM), we have determined the structure of a yeast cytoplasmic pre‐40S particle in comple...
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| description | Final maturation of eukaryotic ribosomes occurs in the cytoplasm and requires the sequential removal of associated assembly factors and processing of the immature 20S pre‐RNA. Using cryo‐electron microscopy (cryo‐EM), we have determined the structure of a yeast cytoplasmic pre‐40S particle in complex with Enp1, Ltv1, Rio2, Tsr1, and Pno1 assembly factors poised to initiate final maturation. The structure reveals that the pre‐rRNA adopts a highly distorted conformation of its 3′ major and 3′ minor domains stabilized by the binding of the assembly factors. This observation is consistent with a mechanism that involves concerted release of the assembly factors orchestrated by the folding of the rRNA in the head of the pre‐40S subunit during the final stages of maturation. Our results provide a structural framework for the coordination of the final maturation events that drive a pre‐40S particle toward the mature form capable of engaging in translation.
Synopsis
A high‐resolution cryo‐EM structure of the cytoplasmic pre‐40S ribosomal subunit from yeast describes interactions between assembly factors and the immature 20S rRNA and reveals how the assembly factors check the integrity of important pre‐40S regions and prevent premature binding of mRNAs and tRNAs.
A cryo‐EM structure of the pre‐40S ribosomal subunit in complex with assembly factors Enp1, Ltv1, Rio2, Tsr1 and Pno1 is determined at 3.4 Å resolution.
The cytoplasmic pre‐40S subunit shows a strong distortion of the 3′ major and 3′ minor domains of the rRNA, held in place by assembly factors.
Enp1 and Tsr1 interact with the beak of the pre‐40S ribosomal subunit and stabilise the tilted conformation of the small subunit head.
Rio2 and Tsr1 prevent rRNA helix 44 from docking into its mature conformation, which propagates structural changes to the binding site of Pno1.
Assembly factors may be released in groups of two, coupled to changes seen in the rRNA structure as the 40S subunit shifts towards the mature conformational state.
Graphical Abstract
A high‐resolution cryo‐EM structure of the yeast ribosome's immature 40S subunit shows how assembly factors interact with the 20S rRNA, check the integrity of important regions, and prevent premature binding of mRNAs and tRNAs. |
| doi_str_mv | 10.15252/embj.201798499 |
| format | Article |
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Synopsis
A high‐resolution cryo‐EM structure of the cytoplasmic pre‐40S ribosomal subunit from yeast describes interactions between assembly factors and the immature 20S rRNA and reveals how the assembly factors check the integrity of important pre‐40S regions and prevent premature binding of mRNAs and tRNAs.
A cryo‐EM structure of the pre‐40S ribosomal subunit in complex with assembly factors Enp1, Ltv1, Rio2, Tsr1 and Pno1 is determined at 3.4 Å resolution.
The cytoplasmic pre‐40S subunit shows a strong distortion of the 3′ major and 3′ minor domains of the rRNA, held in place by assembly factors.
Enp1 and Tsr1 interact with the beak of the pre‐40S ribosomal subunit and stabilise the tilted conformation of the small subunit head.
Rio2 and Tsr1 prevent rRNA helix 44 from docking into its mature conformation, which propagates structural changes to the binding site of Pno1.
Assembly factors may be released in groups of two, coupled to changes seen in the rRNA structure as the 40S subunit shifts towards the mature conformational state.
Graphical Abstract
A high‐resolution cryo‐EM structure of the yeast ribosome's immature 40S subunit shows how assembly factors interact with the 20S rRNA, check the integrity of important regions, and prevent premature binding of mRNAs and tRNAs.</description><identifier>ISSN: 0261-4189</identifier><identifier>EISSN: 1460-2075</identifier><identifier>DOI: 10.15252/embj.201798499</identifier><identifier>PMID: 29459436</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>Assembly ; Binding sites ; Cryoelectron Microscopy ; cryo‐EM ; Cytoplasm ; Docking ; Electron microscopy ; EMBO32 ; EMBO36 ; EMBO40 ; Maturation ; Molecular Docking Simulation ; Nuclear Proteins - chemistry ; Nuclear Proteins - genetics ; Nuclear Proteins - ultrastructure ; pre‐40S ribosome ; Protein Conformation ; Protein Domains ; Protein Interaction Domains and Motifs ; Protein-Serine-Threonine Kinases - ultrastructure ; Ribonucleic acid ; Ribosomal Proteins - chemistry ; Ribosomal Proteins - genetics ; Ribosomal Proteins - isolation & purification ; Ribosomal Proteins - ultrastructure ; ribosome ; ribosome assembly ; ribosome biogenesis ; Ribosome Subunits, Small, Eukaryotic - chemistry ; Ribosome Subunits, Small, Eukaryotic - genetics ; Ribosome Subunits, Small, Eukaryotic - ultrastructure ; Ribosomes ; RNA ; RNA Folding ; RNA, Ribosomal - chemistry ; RNA, Ribosomal - ultrastructure ; RNA-Binding Proteins - chemistry ; RNA-Binding Proteins - ultrastructure ; rRNA ; rRNA 20S ; Saccharomyces cerevisiae - genetics ; Saccharomyces cerevisiae - ultrastructure ; Saccharomyces cerevisiae Proteins - chemistry ; Saccharomyces cerevisiae Proteins - genetics ; Saccharomyces cerevisiae Proteins - isolation & purification ; Saccharomyces cerevisiae Proteins - ultrastructure ; Yeast ; Yeasts</subject><ispartof>The EMBO journal, 2018-04, Vol.37 (7), p.n/a</ispartof><rights>The Author(s) 2018</rights><rights>2018 The Authors</rights><rights>2018 The Authors.</rights><rights>2018 EMBO</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5139-5d903d54ed042c2baba457d245fac1d2c5412f1f04c051a204510285761af5943</citedby><cites>FETCH-LOGICAL-c5139-5d903d54ed042c2baba457d245fac1d2c5412f1f04c051a204510285761af5943</cites><orcidid>0000-0002-4770-7068 ; 0000-0002-9527-210X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5881545/pdf/$$EPDF$$P50$$Gpubmedcentral$$H</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5881545/$$EHTML$$P50$$Gpubmedcentral$$H</linktohtml><link.rule.ids>230,314,727,780,784,885,1416,1432,27923,27924,41119,42188,45573,45574,46408,46832,51575,53790,53792</link.rule.ids><linktorsrc>$$Uhttps://doi.org/10.15252/embj.201798499$$EView_record_in_Springer_Nature$$FView_record_in_$$GSpringer_Nature</linktorsrc><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/29459436$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Scaiola, Alain</creatorcontrib><creatorcontrib>Peña, Cohue</creatorcontrib><creatorcontrib>Weisser, Melanie</creatorcontrib><creatorcontrib>Böhringer, Daniel</creatorcontrib><creatorcontrib>Leibundgut, Marc</creatorcontrib><creatorcontrib>Klingauf‐Nerurkar, Purnima</creatorcontrib><creatorcontrib>Gerhardy, Stefan</creatorcontrib><creatorcontrib>Panse, Vikram Govind</creatorcontrib><creatorcontrib>Ban, Nenad</creatorcontrib><title>Structure of a eukaryotic cytoplasmic pre‐40S ribosomal subunit</title><title>The EMBO journal</title><addtitle>EMBO J</addtitle><addtitle>EMBO J</addtitle><description>Final maturation of eukaryotic ribosomes occurs in the cytoplasm and requires the sequential removal of associated assembly factors and processing of the immature 20S pre‐RNA. Using cryo‐electron microscopy (cryo‐EM), we have determined the structure of a yeast cytoplasmic pre‐40S particle in complex with Enp1, Ltv1, Rio2, Tsr1, and Pno1 assembly factors poised to initiate final maturation. The structure reveals that the pre‐rRNA adopts a highly distorted conformation of its 3′ major and 3′ minor domains stabilized by the binding of the assembly factors. This observation is consistent with a mechanism that involves concerted release of the assembly factors orchestrated by the folding of the rRNA in the head of the pre‐40S subunit during the final stages of maturation. Our results provide a structural framework for the coordination of the final maturation events that drive a pre‐40S particle toward the mature form capable of engaging in translation.
Synopsis
A high‐resolution cryo‐EM structure of the cytoplasmic pre‐40S ribosomal subunit from yeast describes interactions between assembly factors and the immature 20S rRNA and reveals how the assembly factors check the integrity of important pre‐40S regions and prevent premature binding of mRNAs and tRNAs.
A cryo‐EM structure of the pre‐40S ribosomal subunit in complex with assembly factors Enp1, Ltv1, Rio2, Tsr1 and Pno1 is determined at 3.4 Å resolution.
The cytoplasmic pre‐40S subunit shows a strong distortion of the 3′ major and 3′ minor domains of the rRNA, held in place by assembly factors.
Enp1 and Tsr1 interact with the beak of the pre‐40S ribosomal subunit and stabilise the tilted conformation of the small subunit head.
Rio2 and Tsr1 prevent rRNA helix 44 from docking into its mature conformation, which propagates structural changes to the binding site of Pno1.
Assembly factors may be released in groups of two, coupled to changes seen in the rRNA structure as the 40S subunit shifts towards the mature conformational state.
Graphical Abstract
A high‐resolution cryo‐EM structure of the yeast ribosome's immature 40S subunit shows how assembly factors interact with the 20S rRNA, check the integrity of important regions, and prevent premature binding of mRNAs and tRNAs.</description><subject>Assembly</subject><subject>Binding sites</subject><subject>Cryoelectron Microscopy</subject><subject>cryo‐EM</subject><subject>Cytoplasm</subject><subject>Docking</subject><subject>Electron microscopy</subject><subject>EMBO32</subject><subject>EMBO36</subject><subject>EMBO40</subject><subject>Maturation</subject><subject>Molecular Docking Simulation</subject><subject>Nuclear Proteins - chemistry</subject><subject>Nuclear Proteins - genetics</subject><subject>Nuclear Proteins - ultrastructure</subject><subject>pre‐40S ribosome</subject><subject>Protein Conformation</subject><subject>Protein Domains</subject><subject>Protein Interaction Domains and Motifs</subject><subject>Protein-Serine-Threonine Kinases - ultrastructure</subject><subject>Ribonucleic acid</subject><subject>Ribosomal Proteins - chemistry</subject><subject>Ribosomal Proteins - genetics</subject><subject>Ribosomal Proteins - isolation & purification</subject><subject>Ribosomal Proteins - ultrastructure</subject><subject>ribosome</subject><subject>ribosome assembly</subject><subject>ribosome biogenesis</subject><subject>Ribosome Subunits, Small, Eukaryotic - chemistry</subject><subject>Ribosome Subunits, Small, Eukaryotic - genetics</subject><subject>Ribosome Subunits, Small, Eukaryotic - ultrastructure</subject><subject>Ribosomes</subject><subject>RNA</subject><subject>RNA Folding</subject><subject>RNA, Ribosomal - chemistry</subject><subject>RNA, Ribosomal - ultrastructure</subject><subject>RNA-Binding Proteins - chemistry</subject><subject>RNA-Binding Proteins - ultrastructure</subject><subject>rRNA</subject><subject>rRNA 20S</subject><subject>Saccharomyces cerevisiae - genetics</subject><subject>Saccharomyces cerevisiae - ultrastructure</subject><subject>Saccharomyces cerevisiae Proteins - chemistry</subject><subject>Saccharomyces cerevisiae Proteins - genetics</subject><subject>Saccharomyces cerevisiae Proteins - isolation & purification</subject><subject>Saccharomyces cerevisiae Proteins - ultrastructure</subject><subject>Yeast</subject><subject>Yeasts</subject><issn>0261-4189</issn><issn>1460-2075</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkU1P3DAQhq2qqGyh596qSL1wCcx4PZu4h0qA6AcC9QA9W47j0GyTeLHjVnvrT-hv5Jfg7cJCK1WcPJKfefWMXsZeI-wjceIHtq_m-xywkKWQ8hmboJhBzqGg52wCfIa5wFJus5chzAGAygJfsG0uBUkxnU3Y4cXooxmjt5lrMp3Z-F37pRtbk5nl6BadDn2aF97e_Pot4CLzbeWC63WXhVjFoR132Vaju2Bf3b077OuHk8vjT_nZl4-fjw_PckM4lTnVEqY1CVuD4IZXutKCipoLarTBmhsSyBtsQBgg1BwEIfCSihnqZiW7w96vcxex6m1t7DB63amFb_tkrJxu1d8_Q_tNXbkfisoSSVAK2LsL8O462jCqvg3Gdp0erItBcYACsUCAhL79B5276Id0XqI4SC6gXBkdrCnjXQjeNhsZBPWnHrWqR23qSRtvHt-w4e_7SMC7NfCz7ezyqTx1cn50-jgd1ssh7Q1X1j9Y_0_oFrxCrM0</recordid><startdate>20180403</startdate><enddate>20180403</enddate><creator>Scaiola, Alain</creator><creator>Peña, Cohue</creator><creator>Weisser, Melanie</creator><creator>Böhringer, Daniel</creator><creator>Leibundgut, Marc</creator><creator>Klingauf‐Nerurkar, Purnima</creator><creator>Gerhardy, Stefan</creator><creator>Panse, Vikram Govind</creator><creator>Ban, Nenad</creator><general>Nature Publishing Group UK</general><general>Blackwell Publishing Ltd</general><general>John Wiley and Sons Inc</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QG</scope><scope>7QL</scope><scope>7QP</scope><scope>7T5</scope><scope>7TK</scope><scope>7TM</scope><scope>7TO</scope><scope>7U9</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>H94</scope><scope>K9.</scope><scope>M7N</scope><scope>P64</scope><scope>RC3</scope><scope>7X8</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0002-4770-7068</orcidid><orcidid>https://orcid.org/0000-0002-9527-210X</orcidid></search><sort><creationdate>20180403</creationdate><title>Structure of a eukaryotic cytoplasmic pre‐40S ribosomal subunit</title><author>Scaiola, Alain ; Peña, Cohue ; Weisser, Melanie ; Böhringer, Daniel ; Leibundgut, Marc ; Klingauf‐Nerurkar, Purnima ; Gerhardy, Stefan ; Panse, Vikram Govind ; Ban, Nenad</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5139-5d903d54ed042c2baba457d245fac1d2c5412f1f04c051a204510285761af5943</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Assembly</topic><topic>Binding sites</topic><topic>Cryoelectron Microscopy</topic><topic>cryo‐EM</topic><topic>Cytoplasm</topic><topic>Docking</topic><topic>Electron microscopy</topic><topic>EMBO32</topic><topic>EMBO36</topic><topic>EMBO40</topic><topic>Maturation</topic><topic>Molecular Docking Simulation</topic><topic>Nuclear Proteins - chemistry</topic><topic>Nuclear Proteins - genetics</topic><topic>Nuclear Proteins - ultrastructure</topic><topic>pre‐40S ribosome</topic><topic>Protein Conformation</topic><topic>Protein Domains</topic><topic>Protein Interaction Domains and Motifs</topic><topic>Protein-Serine-Threonine Kinases - ultrastructure</topic><topic>Ribonucleic acid</topic><topic>Ribosomal Proteins - chemistry</topic><topic>Ribosomal Proteins - genetics</topic><topic>Ribosomal Proteins - isolation & purification</topic><topic>Ribosomal Proteins - ultrastructure</topic><topic>ribosome</topic><topic>ribosome assembly</topic><topic>ribosome biogenesis</topic><topic>Ribosome Subunits, Small, Eukaryotic - chemistry</topic><topic>Ribosome Subunits, Small, Eukaryotic - genetics</topic><topic>Ribosome Subunits, Small, Eukaryotic - ultrastructure</topic><topic>Ribosomes</topic><topic>RNA</topic><topic>RNA Folding</topic><topic>RNA, Ribosomal - chemistry</topic><topic>RNA, Ribosomal - ultrastructure</topic><topic>RNA-Binding Proteins - chemistry</topic><topic>RNA-Binding Proteins - ultrastructure</topic><topic>rRNA</topic><topic>rRNA 20S</topic><topic>Saccharomyces cerevisiae - genetics</topic><topic>Saccharomyces cerevisiae - ultrastructure</topic><topic>Saccharomyces cerevisiae Proteins - chemistry</topic><topic>Saccharomyces cerevisiae Proteins - genetics</topic><topic>Saccharomyces cerevisiae Proteins - isolation & purification</topic><topic>Saccharomyces cerevisiae Proteins - ultrastructure</topic><topic>Yeast</topic><topic>Yeasts</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Scaiola, Alain</creatorcontrib><creatorcontrib>Peña, Cohue</creatorcontrib><creatorcontrib>Weisser, Melanie</creatorcontrib><creatorcontrib>Böhringer, Daniel</creatorcontrib><creatorcontrib>Leibundgut, Marc</creatorcontrib><creatorcontrib>Klingauf‐Nerurkar, Purnima</creatorcontrib><creatorcontrib>Gerhardy, Stefan</creatorcontrib><creatorcontrib>Panse, Vikram Govind</creatorcontrib><creatorcontrib>Ban, Nenad</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Animal Behavior Abstracts</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>Immunology Abstracts</collection><collection>Neurosciences Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Oncogenes and Growth Factors Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>The EMBO journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Scaiola, Alain</au><au>Peña, Cohue</au><au>Weisser, Melanie</au><au>Böhringer, Daniel</au><au>Leibundgut, Marc</au><au>Klingauf‐Nerurkar, Purnima</au><au>Gerhardy, Stefan</au><au>Panse, Vikram Govind</au><au>Ban, Nenad</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Structure of a eukaryotic cytoplasmic pre‐40S ribosomal subunit</atitle><jtitle>The EMBO journal</jtitle><stitle>EMBO J</stitle><addtitle>EMBO J</addtitle><date>2018-04-03</date><risdate>2018</risdate><volume>37</volume><issue>7</issue><epage>n/a</epage><issn>0261-4189</issn><eissn>1460-2075</eissn><abstract>Final maturation of eukaryotic ribosomes occurs in the cytoplasm and requires the sequential removal of associated assembly factors and processing of the immature 20S pre‐RNA. Using cryo‐electron microscopy (cryo‐EM), we have determined the structure of a yeast cytoplasmic pre‐40S particle in complex with Enp1, Ltv1, Rio2, Tsr1, and Pno1 assembly factors poised to initiate final maturation. The structure reveals that the pre‐rRNA adopts a highly distorted conformation of its 3′ major and 3′ minor domains stabilized by the binding of the assembly factors. This observation is consistent with a mechanism that involves concerted release of the assembly factors orchestrated by the folding of the rRNA in the head of the pre‐40S subunit during the final stages of maturation. Our results provide a structural framework for the coordination of the final maturation events that drive a pre‐40S particle toward the mature form capable of engaging in translation.
Synopsis
A high‐resolution cryo‐EM structure of the cytoplasmic pre‐40S ribosomal subunit from yeast describes interactions between assembly factors and the immature 20S rRNA and reveals how the assembly factors check the integrity of important pre‐40S regions and prevent premature binding of mRNAs and tRNAs.
A cryo‐EM structure of the pre‐40S ribosomal subunit in complex with assembly factors Enp1, Ltv1, Rio2, Tsr1 and Pno1 is determined at 3.4 Å resolution.
The cytoplasmic pre‐40S subunit shows a strong distortion of the 3′ major and 3′ minor domains of the rRNA, held in place by assembly factors.
Enp1 and Tsr1 interact with the beak of the pre‐40S ribosomal subunit and stabilise the tilted conformation of the small subunit head.
Rio2 and Tsr1 prevent rRNA helix 44 from docking into its mature conformation, which propagates structural changes to the binding site of Pno1.
Assembly factors may be released in groups of two, coupled to changes seen in the rRNA structure as the 40S subunit shifts towards the mature conformational state.
Graphical Abstract
A high‐resolution cryo‐EM structure of the yeast ribosome's immature 40S subunit shows how assembly factors interact with the 20S rRNA, check the integrity of important regions, and prevent premature binding of mRNAs and tRNAs.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>29459436</pmid><doi>10.15252/embj.201798499</doi><tpages>13</tpages><orcidid>https://orcid.org/0000-0002-4770-7068</orcidid><orcidid>https://orcid.org/0000-0002-9527-210X</orcidid><oa>free_for_read</oa></addata></record> |
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| source | Springer Nature OA Free Journals |
| subjects | Assembly Binding sites Cryoelectron Microscopy cryo‐EM Cytoplasm Docking Electron microscopy EMBO32 EMBO36 EMBO40 Maturation Molecular Docking Simulation Nuclear Proteins - chemistry Nuclear Proteins - genetics Nuclear Proteins - ultrastructure pre‐40S ribosome Protein Conformation Protein Domains Protein Interaction Domains and Motifs Protein-Serine-Threonine Kinases - ultrastructure Ribonucleic acid Ribosomal Proteins - chemistry Ribosomal Proteins - genetics Ribosomal Proteins - isolation & purification Ribosomal Proteins - ultrastructure ribosome ribosome assembly ribosome biogenesis Ribosome Subunits, Small, Eukaryotic - chemistry Ribosome Subunits, Small, Eukaryotic - genetics Ribosome Subunits, Small, Eukaryotic - ultrastructure Ribosomes RNA RNA Folding RNA, Ribosomal - chemistry RNA, Ribosomal - ultrastructure RNA-Binding Proteins - chemistry RNA-Binding Proteins - ultrastructure rRNA rRNA 20S Saccharomyces cerevisiae - genetics Saccharomyces cerevisiae - ultrastructure Saccharomyces cerevisiae Proteins - chemistry Saccharomyces cerevisiae Proteins - genetics Saccharomyces cerevisiae Proteins - isolation & purification Saccharomyces cerevisiae Proteins - ultrastructure Yeast Yeasts |
| title | Structure of a eukaryotic cytoplasmic pre‐40S ribosomal subunit |
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