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HflX is a ribosome-...
HflX is a ribosome-splitting factor rescuing stalled ribosomes under stress conditions
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- Zhang, Yanqing (författare)
- Tsinghua Univ, Sch Life Sci, Struct Biol Ctr, Key Lab Prot Sci,Minist Educ, Beijing 100084, Peoples R China.
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- Mandava, Chandra Sekhar (författare)
- Uppsala universitet,Struktur- och molekylärbiologi
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- Cao, Wei (författare)
- Tsinghua Univ, Sch Life Sci, Struct Biol Ctr, Key Lab Prot Sci,Minist Educ, Beijing 100084, Peoples R China.
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- Li, Xiaojing (författare)
- Chinese Acad Sci, Inst Microbiol, Key Lab Pathogen Microbiol & Immunol, Beijing, Peoples R China.
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- Zhang, Dejiu (författare)
- Chinese Acad Sci, Inst Biophys, Key Lab RNA Biol, Beijing 100080, Peoples R China.
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- Li, Ningning (författare)
- Tsinghua Univ, Sch Life Sci, Struct Biol Ctr, Key Lab Prot Sci,Minist Educ, Beijing 100084, Peoples R China.
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- Zhang, Yiudao (författare)
- Tsinghua Univ, Sch Life Sci, Struct Biol Ctr, Key Lab Prot Sci,Minist Educ, Beijing 100084, Peoples R China.
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- Zhang, Xiaoxiao (författare)
- Tsinghua Univ, Sch Life Sci, Struct Biol Ctr, Key Lab Prot Sci,Minist Educ, Beijing 100084, Peoples R China.
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- Qin, Yan (författare)
- Chinese Acad Sci, Inst Biophys, Key Lab RNA Biol, Beijing 100080, Peoples R China.
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- Mi, Kaixia (författare)
- Chinese Acad Sci, Inst Microbiol, Key Lab Pathogen Microbiol & Immunol, Beijing, Peoples R China.
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- Lei, Jianlin (författare)
- Tsinghua Univ, Sch Life Sci, Struct Biol Ctr, Key Lab Prot Sci,Minist Educ, Beijing 100084, Peoples R China.
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- Sanyal, Suparna (författare)
- Uppsala universitet,Struktur- och molekylärbiologi
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- Gao, Ning (författare)
- Tsinghua Univ, Sch Life Sci, Struct Biol Ctr, Key Lab Prot Sci,Minist Educ, Beijing 100084, Peoples R China.
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Tsinghua Univ, Sch Life Sci, Struct Biol Ctr, Key Lab Prot Sci,Minist Educ, Beijing 100084, Peoples R China Struktur- och molekylärbiologi (creator_code:org_t)
- 2015-10-12
- 2015
- Engelska.
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Ingår i: Nature Structural & Molecular Biology. - : Springer Science and Business Media LLC. - 1545-9993 .- 1545-9985. ; 22:11, s. 906-913
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Adverse cellular conditions often lead to nonproductive translational stalling and arrest of ribosomes on mRNAs. Here, we used fast kinetics and cryo-EM to characterize Escherichia coil HflX, a GTPase with unknown function. Our data reveal that HflX is a heat shock-induced ribosome-splitting factor capable of dissociating vacant as well as mRNA-associated ribosomes with deacylated tRNA in the peptidyl site. Structural data demonstrate that the N-terminal effector domain of HflX binds to the peptidyl transferase center in a strikingly similar manner as that of the class I release factors and induces dramatic conformational changes in central intersubunit bridges, thus promoting subunit dissociation. Accordingly, loss of HflX results in an increase in stalled ribosomes upon heat shock, These results suggest a primary role of HflX in rescuing translationally arrested ribosomes under stress conditions.
Ämnesord
- NATURVETENSKAP -- Biologi -- Cellbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Cell Biology (hsv//eng)
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Zhang, Yanqing
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Mandava, Chandra ...
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Cao, Wei
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Li, Xiaojing
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Zhang, Dejiu
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Li, Ningning
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visa fler...
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Zhang, Yiudao
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Zhang, Xiaoxiao
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Qin, Yan
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Mi, Kaixia
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Lei, Jianlin
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Sanyal, Suparna
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Gao, Ning
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