5ZEU

M. smegmatis P/P state 30S ribosomal subunit


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


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Literature

Structures of Mycobacterium smegmatis 70S ribosomes in complex with HPF, tmRNA, and P-tRNA.

Mishra, S.Ahmed, T.Tyagi, A.Shi, J.Bhushan, S.

(2018) Sci Rep 8: 13587-13587

  • DOI: 10.1038/s41598-018-31850-3
  • Primary Citation of Related Structures:  
    5ZEY, 5ZEP, 5ZEU, 5ZET, 5ZEB

  • PubMed Abstract: 
  • Ribosomes are the dynamic protein synthesis machineries of the cell. They may exist in different functional states in the cell. Therefore, it is essential to have structural information on these different functional states of ribosomes to understand their mechanism of action ...

    Ribosomes are the dynamic protein synthesis machineries of the cell. They may exist in different functional states in the cell. Therefore, it is essential to have structural information on these different functional states of ribosomes to understand their mechanism of action. Here, we present single particle cryo-EM reconstructions of the Mycobacterium smegmatis 70S ribosomes in the hibernating state (with HPF), trans-translating state (with tmRNA), and the P/P state (with P-tRNA) resolved to 4.1, 12.5, and 3.4 Å, respectively. A comparison of the P/P state with the hibernating state provides possible functional insights about the Mycobacteria-specific helix H54a rRNA segment. Interestingly, densities for all the four OB domains of bS1 protein is visible in the hibernating 70S ribosome displaying the molecular details of bS1-70S interactions. Our structural data shows a Mycobacteria-specific H54a-bS1 interaction which seems to prevent subunit dissociation and degradation during hibernation without the formation of 100S dimer. This indicates a new role of bS1 protein in 70S protection during hibernation in Mycobacteria in addition to its conserved function during translation initiation.


    Organizational Affiliation

    NTU Institute of Structural Biology, Nanyang Technological University, Singapore, Singapore. sbhushan@ntu.edu.sg.



Macromolecules

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
30S ribosomal protein S3B [auth c]275Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsCMSMEG_1442MSMEI_1406
Find proteins for A0QSD7 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
30S ribosomal protein S5C [auth e]214Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsEMSMEG_1472MSMEI_1436
Find proteins for A0QSG6 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
30S ribosomal protein S7D [auth g]156Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsGMSMEG_1399MSMEI_1361
Find proteins for A0QS97 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
30S ribosomal protein S8E [auth h]132Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsHMSMEG_1469MSMEI_1433
Find proteins for A0QSG3 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
30S ribosomal protein S9F [auth i]150Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsIMSMEG_1557MSMEI_1520
Find proteins for A0QSP9 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 7
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30S ribosomal protein S10G [auth j]101Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsJMSMEG_1435MSMEI_1399
Find proteins for A0QSD0 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
30S ribosomal protein S11H [auth k]138Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsKMSMEG_1522MSMEI_1486
Find proteins for A0QSL6 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 9
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30S ribosomal protein S12I [auth l]124Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsLMSMEG_1398MSMEI_1360
Find proteins for A0QS96 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetailsImage
30S ribosomal protein S15J [auth o]89Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsOMSMEG_2654MSMEI_2591
Find proteins for A0QVQ3 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 11
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30S ribosomal protein S17K [auth q]98Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsQMSMEG_1445MSMEI_1409
Find proteins for A0QSE0 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 12
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30S ribosomal protein S18 2L [auth r]84Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsR2rpsR1MSMEG_6895MSMEI_6711
Find proteins for A0R7F7 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 13
MoleculeChainsSequence LengthOrganismDetailsImage
30S ribosomal protein S19M [auth s]93Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsSMSMEG_1440MSMEI_1404
Find proteins for A0QSD5 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetailsImage
30S ribosomal protein S20N [auth t]86Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsTMSMEG_4571MSMEI_4459
Find proteins for A0R102 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 16
MoleculeChainsSequence LengthOrganismDetailsImage
30S ribosomal protein S14 type ZP [auth n]61Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsZrpsNMSMEG_1468MSMEI_1432
Find proteins for A0QSG2 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 17
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30S ribosomal protein S2Q [auth b]277Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsBMSMEG_2519MSMEI_2460
Find proteins for A0QVB8 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 18
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30S ribosomal protein S4R [auth d]201Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsDMSMEG_1523MSMEI_1487
Find proteins for A0QSL7 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 19
MoleculeChainsSequence LengthOrganismDetailsImage
30S ribosomal protein S6S [auth f]96Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Find proteins for A0A0D6J3X3 (Mycolicibacterium smegmatis)
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Entity ID: 20
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30S ribosomal protein S13T [auth m]124Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsMMSMEG_1521MSMEI_1485
Find proteins for A0QSL5 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 21
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30S ribosomal protein S16U [auth p]156Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: rpsPMSMEG_2435MSMEI_2374
Find proteins for A0QV37 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 22
MoleculeChainsSequence LengthOrganismDetailsImage
Conserved domain proteinV [auth u]33Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: MSMEG_0945
Find proteins for A0QR10 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
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Entity ID: 1
MoleculeChainsLengthOrganismImage
16S rRNAA [auth a]1528Mycolicibacterium smegmatis MC2 155
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Entity ID: 15
MoleculeChainsLengthOrganismImage
P-tRNAfMetO [auth v]77Escherichia coli
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Ministry of Education (Singapore)Singapore--

Revision History  (Full details and data files)

  • Version 1.0: 2018-09-26
    Type: Initial release
  • Version 1.1: 2019-11-06
    Changes: Data collection, Other