7V2M

T.thermophilus 30S ribosome with KsgA, class K1k4


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Decoding the Mechanism of Specific RNA Targeting by Ribosomal Methyltransferases.

Singh, J.Raina, R.Vinothkumar, K.R.Anand, R.

(2022) ACS Chem Biol 17: 829-839

  • DOI: https://doi.org/10.1021/acschembio.1c00732
  • Primary Citation of Related Structures:  
    7V2L, 7V2M, 7V2N, 7V2O, 7V2P, 7V2Q

  • PubMed Abstract: 

    Methylation of specific nucleotides is integral for ribosomal biogenesis and also serves as a common mechanism to confer antibiotic resistance by pathogenic bacteria. Here, by determining the high-resolution structure of the 30S-KsgA complex by cryo-electron microscopy, a state was captured, where KsgA juxtaposes between helices h44 and h45 of the 30S ribosome, separating them, thereby enabling remodeling of the surrounded rRNA and allowing the cognate site to enter the methylation pocket. With the structure as a guide, several mutant versions of the ribosomes, where interacting bases in the catalytic helix h45 and surrounding helices h44, h24, and h27, were mutated and evaluated for their methylation efficiency revealing factors that direct the enzyme to its cognate site with high fidelity. The biochemical studies show that the three-dimensional environment of the ribosome enables the interaction of select loop regions in KsgA with the ribosome helices paramount to maintain selectivity.


  • Organizational Affiliation

    Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai400076, India.


Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S2256Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for P80371 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore P80371 
Go to UniProtKB:  P80371
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP80371
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S3239Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for P80372 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore P80372 
Go to UniProtKB:  P80372
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP80372
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S4209Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for P80373 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore P80373 
Go to UniProtKB:  P80373
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP80373
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S5162Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for Q5SHQ5 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SHQ5 
Go to UniProtKB:  Q5SHQ5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SHQ5
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S6101Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for Q5SLP8 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SLP8 
Go to UniProtKB:  Q5SLP8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SLP8
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S7156Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for P17291 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore P17291 
Go to UniProtKB:  P17291
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP17291
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S8138Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for P0DOY9 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore P0DOY9 
Go to UniProtKB:  P0DOY9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0DOY9
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S9128Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for P80374 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore P80374 
Go to UniProtKB:  P80374
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP80374
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S10105Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for Q5SHN7 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SHN7 
Go to UniProtKB:  Q5SHN7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SHN7
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S11129Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for P80376 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore P80376 
Go to UniProtKB:  P80376
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP80376
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S12132Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for Q5SHN3 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SHN3 
Go to UniProtKB:  Q5SHN3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SHN3
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S13126Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for P80377 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore P80377 
Go to UniProtKB:  P80377
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP80377
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 14
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S14 type Z61Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for P0DOY6 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore P0DOY6 
Go to UniProtKB:  P0DOY6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0DOY6
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 15
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S1589Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for Q5SJ76 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SJ76 
Go to UniProtKB:  Q5SJ76
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SJ76
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 16
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S1688Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for Q5SJH3 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SJH3 
Go to UniProtKB:  Q5SJH3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SJH3
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 17
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S17105Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for P0DOY7 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore P0DOY7 
Go to UniProtKB:  P0DOY7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0DOY7
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 18
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S1888Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for Q5SLQ0 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SLQ0 
Go to UniProtKB:  Q5SLQ0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SLQ0
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 19
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S1993Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for Q5SHP2 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SHP2 
Go to UniProtKB:  Q5SHP2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SHP2
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 20
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S20106Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for P80380 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore P80380 
Go to UniProtKB:  P80380
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP80380
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 21
MoleculeChains Sequence LengthOrganismDetailsImage
Ribosomal RNA small subunit methyltransferase A
U, W
298Bacillus subtilis subsp. subtilis str. 168Mutation(s): 0 
Gene Names: rsmAksgABSU00420
EC: 2.1.1.182
UniProt
Find proteins for P37468 (Bacillus subtilis (strain 168))
Explore P37468 
Go to UniProtKB:  P37468
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP37468
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 22
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein Thx27Thermus thermophilus HB8Mutation(s): 0 
UniProt
Find proteins for Q5SIH3 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SIH3 
Go to UniProtKB:  Q5SIH3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SIH3
Sequence Annotations
Expand
  • Reference Sequence
Find similar nucleic acids by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains LengthOrganismImage
16s ribosomal RNA1,522Thermus thermophilus HB8
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX1.19.2-4158
MODEL REFINEMENTREFMAC5.8.0267
RECONSTRUCTIONRELION3.1

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Department of Biotechnology (DBT, India)IndiaDBT/PR12422/MED/31/287/2014
Science and Engineering Research Board (SERB)IndiaRJN-094/2017
Department of Biotechnology (DBT, India)IndiaIA/S/19/1/504293

Revision History  (Full details and data files)

  • Version 1.0: 2022-04-06
    Type: Initial release
  • Version 1.1: 2022-04-27
    Changes: Database references
  • Version 1.2: 2024-06-12
    Changes: Data collection, Refinement description