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Ribosomal methyltransferase KsgA bound to small ribosomal subunit

Electron Microscopy
3.1Å resolution
PDB entry 7o5h coloured by chain, front view.
PDB entry 7o5h coloured by chain, side view.
PDB entry 7o5h coloured by chain, top view.
Source organisms:
Assembly composition:
hetero pentadecamer (preferred)
Entry contents: 14 distinct polypeptide molecules
1 distinct RNA molecule

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Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero pentadecamer
Accessible surface area: 188119.17 Å2
Buried surface area: 69972.93 Å2
Dissociation area: 911.08 Å2
Dissociation energy (ΔGdiss): 10.76 kcal/mol
Dissociation entropy (TΔSdiss): 14.13 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-135730

Macromolecules

Ribosomal RNA small subunit methyltransferase A
Chain: V
Length: 252 amino acids
Theoretical weight: 27.99 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P06992 (Residues: 17-268; Coverage: 92%)
Gene names: JW0050, b0051, ksgA, rsmA
Pfam: Ribosomal RNA adenine dimethylase
InterPro:
Ribosomal RNA small subunit methyltransferase A in PDB entry 7o5h, assembly 1, front view.
Ribosomal RNA small subunit methyltransferase A in PDB entry 7o5h, assembly 1, side view.
Ribosomal RNA small subunit methyltransferase A in PDB entry 7o5h, assembly 1, top view.
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Small ribosomal subunit protein uS2
Chain: B
Length: 225 amino acids
Theoretical weight: 25.07 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0A7V0 (Residues: 3-227; Coverage: 93%)
Gene names: JW0164, b0169, rpsB
Pfam: Ribosomal protein S2
InterPro:
Small ribosomal subunit protein uS2 in PDB entry 7o5h, assembly 1, front view.
Small ribosomal subunit protein uS2 in PDB entry 7o5h, assembly 1, side view.
Small ribosomal subunit protein uS2 in PDB entry 7o5h, assembly 1, top view.
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Small ribosomal subunit protein uS4
Chain: D
Length: 205 amino acids
Theoretical weight: 23.38 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0A7V8 (Residues: 2-206; Coverage: 100%)
Gene names: JW3258, b3296, ramA, rpsD
Pfam:
InterPro:
Small ribosomal subunit protein uS4 in PDB entry 7o5h, assembly 1, front view.
Small ribosomal subunit protein uS4 in PDB entry 7o5h, assembly 1, side view.
Small ribosomal subunit protein uS4 in PDB entry 7o5h, assembly 1, top view.
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Small ribosomal subunit protein uS5
Chain: E
Length: 158 amino acids
Theoretical weight: 16.66 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0A7W1 (Residues: 10-167; Coverage: 95%)
Gene names: JW3265, b3303, rpsE, spc
Pfam:
InterPro:
Small ribosomal subunit protein uS5 in PDB entry 7o5h, assembly 1, front view.
Small ribosomal subunit protein uS5 in PDB entry 7o5h, assembly 1, side view.
Small ribosomal subunit protein uS5 in PDB entry 7o5h, assembly 1, top view.
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Small ribosomal subunit protein bS6, non-modified isoform
Chain: F
Length: 106 amino acids
Theoretical weight: 12.33 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P02358 (Residues: 1-106; Coverage: 79%)
Gene names: JW4158, b4200, rpsF
Pfam: Ribosomal protein S6
InterPro:
Small ribosomal subunit protein bS6, non-modified isoform in PDB entry 7o5h, assembly 1, front view.
Small ribosomal subunit protein bS6, non-modified isoform in PDB entry 7o5h, assembly 1, side view.
Small ribosomal subunit protein bS6, non-modified isoform in PDB entry 7o5h, assembly 1, top view.
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Small ribosomal subunit protein uS8
Chain: H
Length: 129 amino acids
Theoretical weight: 14.02 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0A7W7 (Residues: 2-130; Coverage: 99%)
Gene names: JW3268, b3306, rpsH
Pfam: Ribosomal protein S8
InterPro:
Small ribosomal subunit protein uS8 in PDB entry 7o5h, assembly 1, front view.
Small ribosomal subunit protein uS8 in PDB entry 7o5h, assembly 1, side view.
Small ribosomal subunit protein uS8 in PDB entry 7o5h, assembly 1, top view.
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Small ribosomal subunit protein uS11
Chain: K
Length: 117 amino acids
Theoretical weight: 12.49 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0A7R9 (Residues: 13-129; Coverage: 91%)
Gene names: JW3259, b3297, rpsK
Pfam: Ribosomal protein S11
InterPro:
Small ribosomal subunit protein uS11 in PDB entry 7o5h, assembly 1, front view.
Small ribosomal subunit protein uS11 in PDB entry 7o5h, assembly 1, side view.
Small ribosomal subunit protein uS11 in PDB entry 7o5h, assembly 1, top view.
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Small ribosomal subunit protein uS12
Chain: L
Length: 123 amino acids
Theoretical weight: 13.64 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0A7S3 (Residues: 2-124; Coverage: 99%)
Gene names: JW3304, b3342, rpsL, strA
Pfam: Ribosomal protein S12/S23
InterPro:
Small ribosomal subunit protein uS12 in PDB entry 7o5h, assembly 1, front view.
Small ribosomal subunit protein uS12 in PDB entry 7o5h, assembly 1, side view.
Small ribosomal subunit protein uS12 in PDB entry 7o5h, assembly 1, top view.
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Small ribosomal subunit protein uS15
Chain: O
Length: 88 amino acids
Theoretical weight: 10.16 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0ADZ4 (Residues: 2-89; Coverage: 99%)
Gene names: JW3134, b3165, rpsO, secC
Pfam: Ribosomal protein S15
InterPro:
Small ribosomal subunit protein uS15 in PDB entry 7o5h, assembly 1, front view.
Small ribosomal subunit protein uS15 in PDB entry 7o5h, assembly 1, side view.
Small ribosomal subunit protein uS15 in PDB entry 7o5h, assembly 1, top view.
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Small ribosomal subunit protein bS16
Chain: P
Length: 82 amino acids
Theoretical weight: 9.21 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0A7T3 (Residues: 1-82; Coverage: 100%)
Gene names: JW2590, b2609, rpsP
Pfam: Ribosomal protein S16
InterPro:
Small ribosomal subunit protein bS16 in PDB entry 7o5h, assembly 1, front view.
Small ribosomal subunit protein bS16 in PDB entry 7o5h, assembly 1, side view.
Small ribosomal subunit protein bS16 in PDB entry 7o5h, assembly 1, top view.
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Small ribosomal subunit protein uS17
Chain: Q
Length: 80 amino acids
Theoretical weight: 9.26 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0AG63 (Residues: 4-83; Coverage: 95%)
Gene names: JW3273, b3311, neaA, rpsQ
Pfam: Ribosomal protein S17
InterPro:
Small ribosomal subunit protein uS17 in PDB entry 7o5h, assembly 1, front view.
Small ribosomal subunit protein uS17 in PDB entry 7o5h, assembly 1, side view.
Small ribosomal subunit protein uS17 in PDB entry 7o5h, assembly 1, top view.
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Small ribosomal subunit protein bS18
Chain: R
Length: 55 amino acids
Theoretical weight: 6.47 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0A7T7 (Residues: 20-74; Coverage: 73%)
Gene names: JW4160, b4202, rpsR
Pfam: Ribosomal protein S18
InterPro:
Small ribosomal subunit protein bS18 in PDB entry 7o5h, assembly 1, front view.
Small ribosomal subunit protein bS18 in PDB entry 7o5h, assembly 1, side view.
Small ribosomal subunit protein bS18 in PDB entry 7o5h, assembly 1, top view.
Molecule details ›

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Small ribosomal subunit protein bS20
Chain: T
Length: 86 amino acids
Theoretical weight: 9.58 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0A7U7 (Residues: 2-87; Coverage: 99%)
Gene names: JW0022, b0023, rpsT
Pfam: Ribosomal protein S20
InterPro:
Small ribosomal subunit protein bS20 in PDB entry 7o5h, assembly 1, front view.
Small ribosomal subunit protein bS20 in PDB entry 7o5h, assembly 1, side view.
Small ribosomal subunit protein bS20 in PDB entry 7o5h, assembly 1, top view.
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Small ribosomal subunit protein bS21
Chain: U
Length: 56 amino acids
Theoretical weight: 6.63 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P68679 (Residues: 2-57; Coverage: 79%)
Gene names: JW3037, b3065, rpsU
Pfam: Ribosomal protein S21
InterPro:
Small ribosomal subunit protein bS21 in PDB entry 7o5h, assembly 1, front view.
Small ribosomal subunit protein bS21 in PDB entry 7o5h, assembly 1, side view.
Small ribosomal subunit protein bS21 in PDB entry 7o5h, assembly 1, top view.
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RNA chain A
Name: 16S ribosomal RNA
Representative chains: A
Length: 964 nucleotides
Theoretical weight: 312.98 KDa
Rfam: Bacterial small subunit ribosomal RNA
16S ribosomal RNA in PDB entry 7o5h, assembly 1, front view.
16S ribosomal RNA in PDB entry 7o5h, assembly 1, side view.
16S ribosomal RNA in PDB entry 7o5h, assembly 1, top view.
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