ribosome disassembly / ornithine decarboxylase inhibitor activity / misfolded RNA binding / Group I intron splicing / RNA folding / four-way junction DNA binding / regulation of mRNA stability / translation initiation factor activity / negative regulation of translational initiation / mRNA regulatory element binding translation repressor activity ...ribosome disassembly / ornithine decarboxylase inhibitor activity / misfolded RNA binding / Group I intron splicing / RNA folding / four-way junction DNA binding / regulation of mRNA stability / translation initiation factor activity / negative regulation of translational initiation / mRNA regulatory element binding translation repressor activity / response to cold / positive regulation of RNA splicing / transcription antitermination / DNA endonuclease activity / DNA-templated transcription termination / maintenance of translational fidelity / mRNA 5'-UTR binding / regulation of translation / ribosomal small subunit assembly / ribosome binding / ribosomal small subunit biogenesis / small ribosomal subunit / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytoplasmic translation / tRNA binding / negative regulation of translation / rRNA binding / structural constituent of ribosome / ribosome / translation / response to antibiotic / hydrolase activity / mRNA binding / RNA binding / zinc ion binding / membrane / cytoplasm / cytosol 類似検索 - 分子機能
Translation initiation factor 3, conserved site / Initiation factor 3 signature. / Translation initiation factor 3, C-terminal / Translation initiation factor IF-3, C-terminal domain / Translation initiation factor IF-1 / Translation initiation factor 3 / Translation initiation factor 3, N-terminal / Translation initiation factor 3 (IF-3), N-terminal domain superfamily / Translation initiation factor 3 (IF-3), C-terminal domain superfamily / Translation initiation factor IF-3, N-terminal domain ...Translation initiation factor 3, conserved site / Initiation factor 3 signature. / Translation initiation factor 3, C-terminal / Translation initiation factor IF-3, C-terminal domain / Translation initiation factor IF-1 / Translation initiation factor 3 / Translation initiation factor 3, N-terminal / Translation initiation factor 3 (IF-3), N-terminal domain superfamily / Translation initiation factor 3 (IF-3), C-terminal domain superfamily / Translation initiation factor IF-3, N-terminal domain / RNA-binding domain, S1, IF1 type / Translation initiation factor 1A / IF-1 / S1 domain IF1 type profile. / Ribosomal protein S21, conserved site / Ribosomal protein S21 signature. / Ribosomal protein S1-like RNA-binding domain / S1 domain / Ribosomal protein S21 superfamily / Ribosomal protein S16, conserved site / Ribosomal protein S16 signature. / Ribosomal protein S21 / Ribosomal protein S21 / Ribosomal protein S6, conserved site / Ribosomal protein S6 signature. / Ribosomal protein S7, bacterial/organellar-type / Ribosomal protein S11, bacterial-type / Ribosomal protein S20 / Ribosomal protein S20 superfamily / Ribosomal protein S20 / Ribosomal protein S4, bacterial-type / Ribosomal protein S5, bacterial-type / 30S ribosomal protein S17 / Ribosomal protein S6, plastid/chloroplast / Ribosomal protein S2, bacteria/mitochondria/plastid / Ribosomal protein S18, conserved site / Ribosomal protein S18 signature. / Ribosomal protein S9, bacterial/plastid / Ribosomal protein S16 / Ribosomal protein S16 domain superfamily / Ribosomal protein S16 / Ribosomal protein S15, bacterial-type / Ribosomal protein S6 / Ribosomal protein S6 / Ribosomal protein S6 superfamily / Ribosomal protein S12, bacterial-type / Translation elongation factor EF1B/ribosomal protein S6 / Ribosomal protein S18 / Ribosomal protein S18 / Ribosomal protein S18 superfamily / Ribosomal protein S2 signature 2. / Ribosomal protein S2 signature 1. / Ribosomal protein S5, N-terminal, conserved site / Ribosomal protein S5 signature. / Ribosomal protein S7, conserved site / Ribosomal protein S7 signature. / Ribosomal protein S2, conserved site / : / Ribosomal protein S2 / Ribosomal protein S2, flavodoxin-like domain superfamily / Ribosomal protein S2 / Ribosomal protein S17, conserved site / Ribosomal protein S17 signature. / Ribosomal protein S5 / S5 double stranded RNA-binding domain profile. / Ribosomal protein S5, N-terminal / Ribosomal protein S5, C-terminal / Ribosomal protein S5, N-terminal domain / Ribosomal protein S5, C-terminal domain / Ribosomal protein S4/S9 N-terminal domain / Ribosomal protein S8 signature. / Ribosomal protein S4, conserved site / Ribosomal protein S4 signature. / Ribosomal protein S4/S9 N-terminal domain / Ribosomal protein S4/S9, N-terminal / Ribosomal protein S15 signature. / Ribosomal protein S4/S9 / Ribosomal protein S8 / Ribosomal protein S8 superfamily / Ribosomal protein S8 / S4 RNA-binding domain profile. / S4 RNA-binding domain / Ribosomal S11, conserved site / S4 domain / Ribosomal protein S11 signature. / RNA-binding S4 domain / Ribosomal protein S9, conserved site / Ribosomal protein S9 signature. / RNA-binding S4 domain superfamily / Ribosomal protein S11 / Ribosomal protein S12 signature. / Ribosomal protein S11 / Ribosomal protein S5/S7 / Ribosomal protein S7 domain / Ribosomal protein S7 domain superfamily / Ribosomal protein S7p/S5e / Ribosomal protein S9 / Ribosomal protein S9/S16 / Ribosomal protein S12/S23 / Ribosomal protein S12/S23 / Ribosomal protein S17/S11 類似検索 - ドメイン・相同性
Small ribosomal subunit protein bS6 / Small ribosomal subunit protein uS7 / Translation initiation factor IF-3 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein bS16 / Small ribosomal subunit protein bS18 / Small ribosomal subunit protein bS20 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS4 ...Small ribosomal subunit protein bS6 / Small ribosomal subunit protein uS7 / Translation initiation factor IF-3 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein bS16 / Small ribosomal subunit protein bS18 / Small ribosomal subunit protein bS20 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS5 / Small ribosomal subunit protein uS8 / Small ribosomal subunit protein uS9 / Small ribosomal subunit protein uS15 / Small ribosomal subunit protein uS17 / Small ribosomal subunit protein bS21 / Translation initiation factor IF-1 類似検索 - 構成要素
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
GM134931
米国
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
AI139202
米国
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
AG082005
米国
引用
ジャーナル: bioRxiv / 年: 2026 タイトル: Mechanistic insights into recovery from growth arrest. 著者: Ahmed Hassan / Yuko Nakano / Howard Gamper / Isao Masuda / Matyas Pinkas / Sathya Nagarajan / Jonathan Dworkin / Gregor Blaha / Ya-Ming Hou / Gabriel Demo / 要旨: Bacteria survive hostile conditions in clinically relevant conditions by shutting down protein synthesis, but how they restart growth remains poorly understood. Here, we use an Δ strain, which ...Bacteria survive hostile conditions in clinically relevant conditions by shutting down protein synthesis, but how they restart growth remains poorly understood. Here, we use an Δ strain, which exhibits a prolonged growth arrest, as a model to investigate how bacteria recover from this arrested state and restore protein synthesis. RimM is a conserved ribosome maturation factor for the 3'-major (head) domain of the 16S rRNA within the bacterial 30S subunit. The loss of RimM causes a significantly longer delay in recovery than other 30S maturation factors, including RbfA - the presumed primary factor in 30S maturation. Cryo-EM analysis of Δ ribosomes revealed a delayed recruitment of ribosomal proteins to the 30S head domain and increased occupancy of the initiation factors IF1 and IF3, as well as recruitment of the silencing factor RsfS to the 50S subunit. These coordinated changes provide a safeguarding mechanism to block the assembly of premature 70S ribosomes. Notably, while the delayed 30S assembly in Δ reduces the activity of global protein synthesis during the recovery phase, bacteria attempt to compensate for this deficiency by producing higher levels of the ribosomal machinery, indicating a programmatic change in energy allocation to generate the ribosome machinery. These findings highlight the importance of the RimM-assisted assembly of the ribosomal head domain for bacterial recovery from growth arrest.