3OTO

Crystal Structure of the 30S ribosomal subunit from a KsgA mutant of Thermus thermophilus (HB8)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.69 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.173 
  • R-Value Observed: 0.176 

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This is version 1.1 of the entry. See complete history


Literature

Modification of 16S ribosomal RNA by the KsgA methyltransferase restructures the 30S subunit to optimize ribosome function.

Demirci, H.Murphy, F.Belardinelli, R.Kelley, A.C.Ramakrishnan, V.Gregory, S.T.Dahlberg, A.E.Jogl, G.

(2010) RNA 16: 2319-2324

  • DOI: 10.1261/rna.2357210
  • Primary Citation of Related Structures:  
    3OTO

  • PubMed Abstract: 
  • All organisms incorporate post-transcriptional modifications into ribosomal RNA, influencing ribosome assembly and function in ways that are poorly understood. The most highly conserved modification is the dimethylation of two adenosines near the 3' ...

    All organisms incorporate post-transcriptional modifications into ribosomal RNA, influencing ribosome assembly and function in ways that are poorly understood. The most highly conserved modification is the dimethylation of two adenosines near the 3' end of the small subunit rRNA. Lack of these methylations due to deficiency in the KsgA methyltransferase stimulates translational errors during both the initiation and elongation phases of protein synthesis and confers resistance to the antibiotic kasugamycin. Here, we present the X-ray crystal structure of the Thermus thermophilus 30S ribosomal subunit lacking these dimethylations. Our data indicate that the KsgA-directed methylations facilitate structural rearrangements in order to establish a functionally optimum subunit conformation during the final stages of ribosome assembly.


    Organizational Affiliation

    Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, Rhode Island 02912, USA.



Macromolecules

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S2B256Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsBrps2TTHA0861
Find proteins for P80371 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S3C239Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsCrps3TTHA1686
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S4D209Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsDrps4TTHA1665
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S5E162Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsETTHA1675
Find proteins for Q5SHQ5 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S6F101Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsFTTHA0245
Find proteins for Q5SLP8 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S7G156Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsGrps7TTHA1696
Find proteins for P17291 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S8H138Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsHTTHA1678
Find proteins for P0DOY9 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 9
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30S RIBOSOMAL PROTEIN S9I128Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsIrps9TTHA1464
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Entity ID: 10
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30S RIBOSOMAL PROTEIN S10J105Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsJTTHA1693
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Entity ID: 11
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S11K129Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsKrps11TTHA1666
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Entity ID: 12
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S12L135Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsLTTHA1697
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Entity ID: 13
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30S RIBOSOMAL PROTEIN S13M126Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsMrps13TTHA1667
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S14N61Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsZrpsNTTHA1679
Find proteins for P0DOY6 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 15
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S15O89Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsOTTHA1138
Find proteins for Q5SJ76 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 16
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S16P88Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsPTTHA1035
Find proteins for Q5SJH3 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 17
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S17Q105Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsQTTHA1683
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Entity ID: 18
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S18R88Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsRTTHA0243
Find proteins for Q5SLQ0 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 19
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S19S93Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsSTTHA1688
Find proteins for Q5SHP2 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 20
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S20T106Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsTrps20TTHA1397
Find proteins for P80380 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 21
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN THXU27Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsUTTHA1396
Find proteins for Q5SIH3 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 1
MoleculeChainsLengthOrganismImage
16S rRNAA1522Thermus thermophilus HB8
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download CCD File 
D, N
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
K
Query on K

Download CCD File 
A, E
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A, B, D, M
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.69 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.173 
  • R-Value Observed: 0.176 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 402.089α = 90
b = 402.089β = 90
c = 173.254γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-09-29
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance