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-Structure paper
タイトル | Molecular basis of mRNA delivery to the bacterial ribosome. |
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ジャーナル・号・ページ | Science, Vol. 386, Issue 6725, Page eado8476, Year 2024 |
掲載日 | 2024年11月29日 |
![]() | Michael W Webster / Adrien Chauvier / Huma Rahil / Andrea Graziadei / Kristine Charles / Nataliya Miropolskaya / Maria Takacs / Charlotte Saint-André / Juri Rappsilber / Nils G Walter / Albert Weixlbaumer / ![]() ![]() ![]() ![]() |
PubMed 要旨 | Protein synthesis begins with the formation of a ribosome-messenger RNA (mRNA) complex. In bacteria, the small ribosomal subunit (30) is recruited to many mRNAs through base pairing with the Shine- ...Protein synthesis begins with the formation of a ribosome-messenger RNA (mRNA) complex. In bacteria, the small ribosomal subunit (30) is recruited to many mRNAs through base pairing with the Shine-Dalgarno (SD) sequence and RNA binding by ribosomal protein bS1. Translation can initiate on nascent mRNAs, and RNA polymerase (RNAP) can promote the recruitment of the pioneering 30. Here, we examined 30 recruitment to nascent mRNAs using cryo-electron microscopy, single-molecule fluorescence colocalization, and in-cell cross-linking mass spectrometry. We show that bS1 delivers the mRNA to the ribosome for SD duplex formation and 30 activation. Additionally, bS1 and RNAP stimulate translation initiation. Our work provides a mechanistic framework for how the SD duplex, ribosomal proteins, and RNAP cooperate in 30 recruitment to mRNAs and establish transcription-translation coupling. |
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手法 | EM (単粒子) |
解像度 | 2.5 - 4.2 Å |
構造データ | EMDB-51517, PDB-9gr1: ![]() EMDB-51572: 30S mRNA delivery complex (open head) consensus map ![]() EMDB-51573: 30S mRNA delivery complex (open head) focused head map ![]() EMDB-51574: 30S mRNA delivery complex (open head) focused body map ![]() EMDB-51575: 30S mRNA delivery complex (open head) focused platform map ![]() EMDB-51576: 30S mRNA delivery complex (consensus) consensus map ![]() EMDB-51577: 30S mRNA delivery complex (consensus) focused head map ![]() EMDB-51578: 30S mRNA delivery complex (consensus) focused body map ![]() EMDB-51579: 30S mRNA delivery complex (consensus) focused platform map ![]() EMDB-51580: 30S mRNA delivery complex (bS1 resolved) consensus map ![]() EMDB-51581: 30S mRNA delivery complex (bS1 resolved) focused head map ![]() EMDB-51582: 30S mRNA delivery complex (bS1 resolved) focused body map ![]() EMDB-51583: 30S mRNA delivery complex (bS1 resolved) focused platform map ![]() EMDB-51584: 30S mRNA delivery complex TEC resolved (30S only) consensus map ![]() EMDB-51585: 30S mRNA delivery complex TEC resolved (30S only) focused head map ![]() EMDB-51586: 30S mRNA delivery complex TEC resolved (30S only) focused body map ![]() EMDB-51587: 30S mRNA delivery complex (closed head) consensus map ![]() EMDB-51588: 30S mRNA delivery complex (closed head) focused head map ![]() EMDB-51589: 30S mRNA delivery complex (closed head) focused body map ![]() EMDB-51590: 30S mRNA delivery complex (closed head) focused platform map ![]() EMDB-51591: 30S-TEC (TEC in expressome position) Inactive state 2, consensus map ![]() EMDB-51592: 30S-TEC (TEC in expressome position) Inactive state 2, focused head map ![]() EMDB-51593: 30S-TEC (TEC in expressome position) Inactive state 2, focused body map ![]() EMDB-51594: 30S-TEC (TEC in expressome position) Inactive state 2, focused platform map ![]() EMDB-51595: 30S-TEC (TEC in expressome position) Inactive state 2, focused TEC map ![]() EMDB-51596: 30S-TEC (TEC in expressome position) Inactive state 1, consensus map ![]() EMDB-51597: 30S-TEC (TEC in expressome position) Inactive state 1, focused head map ![]() EMDB-51598: 30S-TEC (TEC in expressome position) Inactive state 1, focused body map ![]() EMDB-51599: 30S-TEC (TEC in expressome position) Inactive state 1, focused platform map ![]() EMDB-51600: 30S-TEC (TEC in expressome position) Inactive state 1, focused TEC map ![]() EMDB-51601: 30S mRNA delivery complex TEC resolved (30S only) focused platform map ![]() EMDB-51602: 30S-PIC (Pre-Initiation complex) consensus map ![]() EMDB-51603: 30S-PIC (Pre-Initiation complex) focused head map ![]() EMDB-51604: 30S-PIC (Pre-Initiation complex) focused body map EMDB-51615, PDB-9gup: EMDB-51616, PDB-9guq: EMDB-51617, PDB-9gur: EMDB-51618, PDB-9gus: EMDB-51619, PDB-9gut: EMDB-51620, PDB-9guu: EMDB-51621, PDB-9guv: EMDB-51622, PDB-9guw: EMDB-51623, PDB-9gux: |
化合物 | ![]() ChemComp-ZN: ![]() ChemComp-K: ![]() ChemComp-MG: ![]() ChemComp-PHE: |
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![]() | GENE REGULATION / Ribosome / RNA polymerase / mRNA / Transcription / translation / coupling / Ribosome. / coupling. |