7tql

Electron Microscopy
3.2Å resolution

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

Released:

Function and Biology Details

Reactions catalysed:
GTP + H(2)O = GDP + phosphate
The C-O-P bond 3' to the apurinic or apyrimidinic site in DNA is broken by a beta-elimination reaction, leaving a 3'-terminal unsaturated sugar and a product with a terminal 5'-phosphate
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
hetero 38-mer (preferred)
PDBe Complex ID:
PDB-CPX-130100 (preferred)
Entry contents:
35 distinct polypeptide molecules
2 distinct RNA molecules
Macromolecules (37 distinct):
Eukaryotic translation initiation factor 5B Chain: 1
Molecule details ›
Chain: 1
Length: 619 amino acids
Theoretical weight: 69.87 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: O60841 (Residues: 602-625, 626-1219; Coverage: 51%)
Gene names: EIF5B, IF2, KIAA0741
Sequence domains:
Eukaryotic translation initiation factor 1A, X-chromosomal Chain: 4
Molecule details ›
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
Sequence domains: Translation initiation factor 1A / IF-1
Small ribosomal subunit protein eS1; Small ribosomal subunit protein uS2 Chains: B, C
Small ribosomal subunit protein uS5 Chain: D
Small ribosomal subunit protein eS4, X isoform Chain: E
Small ribosomal subunit protein uS3 Chain: F
Small ribosomal subunit protein eS6 Chain: G
Small ribosomal subunit protein eS7 Chain: H
Small ribosomal subunit protein eS8 Chain: I
Small ribosomal subunit protein uS4 Chain: J
Small ribosomal subunit protein uS7 Chain: K
Small ribosomal subunit protein uS17 Chain: L
Small ribosomal subunit protein eS10 Chain: M
Small ribosomal subunit protein uS15 Chain: N
Small ribosomal subunit protein eS12 Chain: O
Small ribosomal subunit protein uS11 Chain: P
Small ribosomal subunit protein uS19 Chain: Q
Small ribosomal subunit protein uS9 Chain: R
Small ribosomal subunit protein eS17 Chain: S
Small ribosomal subunit protein uS13 Chain: T
Small ribosomal subunit protein eS19 Chain: U
Small ribosomal subunit protein uS10 Chain: V
Small ribosomal subunit protein uS8 Chain: W
Small ribosomal subunit protein uS12 Chain: X
Small ribosomal subunit protein eS24 Chain: Y
Small ribosomal subunit protein eS21 Chain: Z
Small ribosomal subunit protein eS25 Chain: a
Small ribosomal subunit protein eS27 Chain: b
Small ribosomal subunit protein eS26 Chain: c
Small ribosomal subunit protein eS28 Chain: d
Small ribosomal subunit protein eS30 Chain: e
Small ribosomal subunit protein uS14 Chain: f
Small ribosomal subunit protein eS31 Chain: g
Small ribosomal subunit protein eS32 Chain: h
Small ribosomal subunit protein RACK1 Chain: j
18S Ribosomal RNA Chain: 2
Human Met-tRNAiMet Chain: 3

Ligands and Environments

3 bound ligands:
No modified residues

Experiments and Validation Details

wwPDB Validation report is not available for this EM entry.
Resolution: 3.2Å
Relevant EMDB volumes: EMD-26067
Expression systems:
  • Escherichia coli
  • Homo sapiens