Structure analysis

CryoEM structure of the human 40S small ribosomal subunit in complex with translation initiation factors eIF1A and eIF5B.

Electron Microscopy
3.2Å resolution
Source organism: Homo sapiens
Assembly composition:
hetero 38-mer (preferred)
Entry contents: 35 distinct polypeptide molecules
2 distinct RNA molecules

Assemblies

Assembly 1 (preferred)
Download    3D Visualisation
Multimeric state: hetero 38-mer
Accessible surface area: 434444.94 Å2
Buried surface area: 198169.64 Å2
Dissociation area: 1,573.7 Å2
Dissociation energy (ΔGdiss): 5.55 kcal/mol
Dissociation entropy (TΔSdiss): 12.26 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-130100

Macromolecules

Search similar proteins

Chain: 4
Length: 90 amino acids
Theoretical weight: 10.38 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P47813 (Residues: 24-113; Coverage: 63%)
Gene names: EIF1A, EIF1AX, EIF4C
Pfam: Translation initiation factor 1A / IF-1
InterPro:

Search similar proteins

Search similar proteins

Search similar proteins

Search similar proteins

Search similar proteins

Chain: G
Length: 226 amino acids
Theoretical weight: 26.16 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62753 (Residues: 1-226; Coverage: 91%)
Gene names: OK/SW-cl.2, RPS6
Pfam: Ribosomal protein S6e
InterPro:

Search similar proteins

Chain: H
Length: 185 amino acids
Theoretical weight: 21.19 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62081 (Residues: 8-192; Coverage: 95%)
Gene name: RPS7
Pfam: Ribosomal protein S7e
InterPro:

Search similar proteins

Chain: I
Length: 205 amino acids
Theoretical weight: 23.95 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62241 (Residues: 2-206; Coverage: 99%)
Gene names: OK/SW-cl.83, RPS8
Pfam: Ribosomal protein S8e
InterPro:

Search similar proteins

Search similar proteins

Chain: K
Length: 189 amino acids
Theoretical weight: 21.33 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P46782 (Residues: 16-204; Coverage: 93%)
Gene name: RPS5
Pfam: Ribosomal protein S7p/S5e
InterPro:

Search similar proteins

Chain: L
Length: 147 amino acids
Theoretical weight: 17.17 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62280 (Residues: 2-148; Coverage: 93%)
Gene name: RPS11
Pfam:
InterPro:

Search similar proteins

Chain: M
Length: 97 amino acids
Theoretical weight: 11.62 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P46783 (Residues: 1-97; Coverage: 59%)
Gene name: RPS10
Pfam: Plectin/S10 domain
InterPro:

Search similar proteins

Chain: N
Length: 141 amino acids
Theoretical weight: 16.34 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62277 (Residues: 2-142; Coverage: 93%)
Gene name: RPS13
Pfam:
InterPro:

Search similar proteins

Chain: O
Length: 120 amino acids
Theoretical weight: 13.35 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P25398 (Residues: 10-129; Coverage: 91%)
Gene name: RPS12
Pfam: Ribosomal protein L7Ae/L30e/S12e/Gadd45 family
InterPro:

Search similar proteins

Chain: P
Length: 134 amino acids
Theoretical weight: 14.34 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62263 (Residues: 18-151; Coverage: 89%)
Gene names: PRO2640, RPS14
Pfam: Ribosomal protein S11
InterPro:

Search similar proteins

Chain: Q
Length: 115 amino acids
Theoretical weight: 13.59 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62841 (Residues: 15-129; Coverage: 79%)
Gene names: RIG, RPS15
Pfam: Ribosomal protein S19
InterPro:

Search similar proteins

Chain: R
Length: 139 amino acids
Theoretical weight: 15.77 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62249 (Residues: 8-146; Coverage: 95%)
Gene name: RPS16
Pfam: Ribosomal protein S9/S16
InterPro:

Search similar proteins

Chain: S
Length: 132 amino acids
Theoretical weight: 15.25 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P08708 (Residues: 2-133; Coverage: 98%)
Gene names: RPS17, RPS17L
Pfam: Ribosomal S17
InterPro:

Search similar proteins

Chain: T
Length: 140 amino acids
Theoretical weight: 16.5 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62269 (Residues: 3-142; Coverage: 92%)
Gene names: D6S218E, RPS18
Pfam: Ribosomal protein S13/S18
InterPro:

Search similar proteins

Chain: U
Length: 139 amino acids
Theoretical weight: 15.41 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P39019 (Residues: 4-142; Coverage: 96%)
Gene name: RPS19
Pfam: Ribosomal protein S19e
InterPro:

Search similar proteins

Chain: V
Length: 101 amino acids
Theoretical weight: 11.51 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P60866 (Residues: 17-117; Coverage: 85%)
Gene name: RPS20
Pfam: Ribosomal protein S10p/S20e
InterPro:

Search similar proteins

Chain: W
Length: 129 amino acids
Theoretical weight: 14.73 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62244 (Residues: 2-130; Coverage: 99%)
Gene names: OK/SW-cl.82, RPS15A
Pfam: Ribosomal protein S8
InterPro:

Search similar proteins

Chain: X
Length: 141 amino acids
Theoretical weight: 15.63 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62266 (Residues: 2-142; Coverage: 99%)
Gene name: RPS23
Pfam: Ribosomal protein S12/S23
InterPro:

Search similar proteins

Chain: Y
Length: 123 amino acids
Theoretical weight: 14.36 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62847 (Residues: 4-126; Coverage: 93%)
Gene name: RPS24
Pfam: Ribosomal protein S24e
InterPro:

Search similar proteins

Chain: Z
Length: 82 amino acids
Theoretical weight: 8.98 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P63220 (Residues: 1-82; Coverage: 99%)
Gene name: RPS21
Pfam: Ribosomal protein S21e
InterPro:

Search similar proteins

Chain: a
Length: 72 amino acids
Theoretical weight: 8.18 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62851 (Residues: 42-113; Coverage: 58%)
Gene name: RPS25
Pfam: S25 ribosomal protein
InterPro:

Search similar proteins

Chain: b
Length: 82 amino acids
Theoretical weight: 9.21 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P42677 (Residues: 2-83; Coverage: 98%)
Gene names: MPS1, RPS27
Pfam: Ribosomal protein S27
InterPro:

Search similar proteins

Chain: c
Length: 99 amino acids
Theoretical weight: 11.34 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62854 (Residues: 2-100; Coverage: 86%)
Gene name: RPS26
Pfam: Ribosomal protein S26e
InterPro:

Search similar proteins

Chain: d
Length: 58 amino acids
Theoretical weight: 6.45 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62857 (Residues: 8-65; Coverage: 84%)
Gene name: RPS28
Pfam: Ribosomal protein S28e
InterPro:

Search similar proteins

Chain: e
Length: 51 amino acids
Theoretical weight: 5.64 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62861 (Residues: 81-133; Coverage: 35%)
Gene name: FAU
Pfam: Ribosomal protein S30
InterPro: Small ribosomal subunit protein eS30

Search similar proteins

Chain: f
Length: 54 amino acids
Theoretical weight: 6.5 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62273 (Residues: 3-56; Coverage: 96%)
Gene name: RPS29
Pfam: Ribosomal protein S14p/S29e
InterPro:

Search similar proteins

Chain: g
Length: 65 amino acids
Theoretical weight: 7.62 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62979 (Residues: 85-149; Coverage: 42%)
Gene names: RPS27A, UBA80, UBCEP1
Pfam: Ribosomal protein S27a
InterPro:

Search similar proteins

Chain: h
Length: 19 amino acids
Theoretical weight: 2.68 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P62945 (Residues: 1-19; Coverage: 76%)
Gene name: RPL41
Pfam: Ribosomal protein L41
InterPro: Large ribosomal subunit protein eS32

Search similar proteins

Chain: j
Length: 314 amino acids
Theoretical weight: 34.73 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P63244 (Residues: 2-315; Coverage: 99%)
Gene names: GNB2L1, HLC7, PIG21, RACK1
Pfam: WD domain, G-beta repeat
InterPro:

Search similar proteins

Name: 18S Ribosomal RNA
Representative chains: 2
Length: 1656 nucleotides
Theoretical weight: 534.54 KDa
Rfam: Eukaryotic small subunit ribosomal RNA

Search similar RNA

Name: Human Met-tRNAiMet
Representative chains: 3
Length: 75 nucleotides
Theoretical weight: 24.23 KDa
Rfam: tRNA

Search similar RNA