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Bacterial 30S ribosomal subunit assembly complex state M (head domain)

Electron Microscopy
2.82Å resolution
PDB entry 7af3 coloured by chain, front view.
PDB entry 7af3 coloured by chain, side view.
PDB entry 7af3 coloured by chain, top view.
Source organism: Escherichia coli
Assembly composition:
hetero nonamer (preferred)
Entry contents: 8 distinct polypeptide molecules
1 distinct RNA molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Small ribosomal protein and RNA
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Multimeric state: hetero nonamer
Accessible surface area: 99263.66 Å2
Buried surface area: 43103.94 Å2
Dissociation area: 2,161.83 Å2
Dissociation energy (ΔGdiss): 34.48 kcal/mol
Dissociation entropy (TΔSdiss): 13.55 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-135745

Macromolecules

Small ribosomal subunit protein uS3
Chain: C
Length: 233 amino acids
Theoretical weight: 26.03 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0A7V3 (Residues: 1-233; Coverage: 100%)
Gene names: JW3276, b3314, rpsC
Pfam:
InterPro:
Small ribosomal subunit protein uS3 in PDB entry 7af3, assembly 1, front view.
Small ribosomal subunit protein uS3 in PDB entry 7af3, assembly 1, side view.
Small ribosomal subunit protein uS3 in PDB entry 7af3, assembly 1, top view.
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Small ribosomal subunit protein uS7
Chain: G
Length: 179 amino acids
Theoretical weight: 20.06 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P02359 (Residues: 1-179; Coverage: 100%)
Gene names: JW3303, b3341, rpsG
Pfam: Ribosomal protein S7p/S5e
InterPro:
Small ribosomal subunit protein uS7 in PDB entry 7af3, assembly 1, front view.
Small ribosomal subunit protein uS7 in PDB entry 7af3, assembly 1, side view.
Small ribosomal subunit protein uS7 in PDB entry 7af3, assembly 1, top view.
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Small ribosomal subunit protein uS9
Chain: I
Length: 130 amino acids
Theoretical weight: 14.89 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0A7X3 (Residues: 1-130; Coverage: 100%)
Gene names: JW3199, b3230, rpsI
Pfam: Ribosomal protein S9/S16
InterPro:
Small ribosomal subunit protein uS9 in PDB entry 7af3, assembly 1, front view.
Small ribosomal subunit protein uS9 in PDB entry 7af3, assembly 1, side view.
Small ribosomal subunit protein uS9 in PDB entry 7af3, assembly 1, top view.
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Small ribosomal subunit protein uS10
Chain: J
Length: 103 amino acids
Theoretical weight: 11.76 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0A7R5 (Residues: 1-103; Coverage: 100%)
Gene names: JW3283, b3321, nusE, rpsJ
Pfam: Ribosomal protein S10p/S20e
InterPro:
Small ribosomal subunit protein uS10 in PDB entry 7af3, assembly 1, front view.
Small ribosomal subunit protein uS10 in PDB entry 7af3, assembly 1, side view.
Small ribosomal subunit protein uS10 in PDB entry 7af3, assembly 1, top view.
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Small ribosomal subunit protein uS13
Chain: M
Length: 118 amino acids
Theoretical weight: 13.13 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0A7S9 (Residues: 1-118; Coverage: 100%)
Gene names: JW3260, b3298, rpsM
Pfam: Ribosomal protein S13/S18
InterPro:
Small ribosomal subunit protein uS13 in PDB entry 7af3, assembly 1, front view.
Small ribosomal subunit protein uS13 in PDB entry 7af3, assembly 1, side view.
Small ribosomal subunit protein uS13 in PDB entry 7af3, assembly 1, top view.
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Small ribosomal subunit protein uS14
Chain: N
Length: 101 amino acids
Theoretical weight: 11.61 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0AG59 (Residues: 1-101; Coverage: 100%)
Gene names: JW3269, b3307, rpsN
Pfam: Ribosomal protein S14p/S29e
InterPro:
Small ribosomal subunit protein uS14 in PDB entry 7af3, assembly 1, front view.
Small ribosomal subunit protein uS14 in PDB entry 7af3, assembly 1, side view.
Small ribosomal subunit protein uS14 in PDB entry 7af3, assembly 1, top view.
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Small ribosomal subunit protein uS19
Chain: S
Length: 92 amino acids
Theoretical weight: 10.46 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0A7U3 (Residues: 1-92; Coverage: 100%)
Gene names: JW3278, b3316, rpsS
Pfam: Ribosomal protein S19
InterPro:
Small ribosomal subunit protein uS19 in PDB entry 7af3, assembly 1, front view.
Small ribosomal subunit protein uS19 in PDB entry 7af3, assembly 1, side view.
Small ribosomal subunit protein uS19 in PDB entry 7af3, assembly 1, top view.
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Small ribosomal subunit protein uS2
Chain: B
Length: 241 amino acids
Theoretical weight: 26.78 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0A7V0 (Residues: 1-241; Coverage: 100%)
Gene names: JW0164, b0169, rpsB
Pfam: Ribosomal protein S2
InterPro:
Small ribosomal subunit protein uS2 in PDB entry 7af3, assembly 1, front view.
Small ribosomal subunit protein uS2 in PDB entry 7af3, assembly 1, side view.
Small ribosomal subunit protein uS2 in PDB entry 7af3, assembly 1, top view.
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RNA chain 1
Name: 16S rRNA (head)
Representative chains: 1
Length: 1541 nucleotides
Theoretical weight: 499.53 KDa
Rfam: Bacterial small subunit ribosomal RNA
16S rRNA (head) in PDB entry 7af3, assembly 1, front view.
16S rRNA (head) in PDB entry 7af3, assembly 1, side view.
16S rRNA (head) in PDB entry 7af3, assembly 1, top view.
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