› 4mnq

X-ray diffraction
2.74Å resolution

TCR-peptide specificity overrides affinity enhancing TCR-MHC interactions

Released:
DOI: 10.2210/pdb4mnq/pdb
PDB entry 4mnq coloured by chain, front view.
PDB entry 4mnq coloured by chain, side view.
PDB entry 4mnq coloured by chain, top view.
Source organisms:
Primary publication:
T-cell receptor (TCR)-peptide specificity overrides affinity-enhancing TCR-major histocompatibility complex interactions.
Cole DK, Miles KM, Madura F, Holland CJ, Schauenburg AJ, Godkin AJ, Bulek AM, Fuller A, Akpovwa HJ, Pymm PG, Liddy N, Sami M, Li Y, Rizkallah PJ, Jakobsen BK, Sewell AK
J Biol Chem 289 628-38 (2014)
PMID: 24196962

Function and Biology Details

Reaction catalysed: 
Deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1)
Biochemical function:
Biological process:
Cellular component:
Sequence domains:

Structure analysis Details

Assembly composition:
hetero pentamer (preferred)
PDBe Complex ID:
PDB-CPX-124770 (preferred)
Entry contents:
5 distinct polypeptide molecules
Macromolecules (5 distinct):
HLA class I histocompatibility antigen, A alpha chain Chain: A
Molecule details ›
Chain: A
Length: 276 amino acids
Theoretical weight: 31.95 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P04439 (Residues: 25-299; Coverage: 81%)
Gene names: HLA-A, HLAA
Sequence domains:
Structure domains:
Beta-2-microglobulin Chain: B
Molecule details ›
Chain: B
Length: 100 amino acids
Theoretical weight: 11.88 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P61769 (Residues: 21-119; Coverage: 100%)
Gene names: B2M, CDABP0092, HDCMA22P
Sequence domains: Immunoglobulin C1-set domain
Structure domains: Immunoglobulins
Telomerase reverse transcriptase Chain: C
Molecule details ›
Chain: C
Length: 9 amino acids
Theoretical weight: 1.14 KDa
Source organism: Homo sapiens
Expression system: Not provided
UniProt:
  • Canonical: O14746 (Residues: 540-548; Coverage: 1%)
Gene names: EST2, TCS1, TERT, TRT
Ig-like domain-containing protein Chain: D
Molecule details ›
Chain: D
Length: 200 amino acids
Theoretical weight: 22.25 KDa
Source organisms: Expression system: Escherichia coli
UniProt:
  • Canonical: H2RG00 (Residues: 22-108; Coverage: 53%)
  • Canonical: K7N5N2 (Residues: 115-203; Coverage: 43%)
Gene name: LOC452776
Sequence domains:
Structure domains: Immunoglobulins
T cell receptor beta constant 1 Chain: E
Molecule details ›
Chain: E
Length: 240 amino acids
Theoretical weight: 27.14 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P01850 (Residues: 1-129; Coverage: 73%)
Gene name: TRBC1
Sequence domains: Immunoglobulin C1-set domain
Structure domains: Immunoglobulins

Ligands and Environments

2 bound ligands:
Ligand GOL 1 x GOL
Ligand EDO 2 x EDO
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: DIAMOND BEAMLINE I03
Spacegroup: P21
Unit cell:
a: 94.22Å b: 48.49Å c: 118.07Å
α: 90° β: 107.86° γ: 90°
R-values:
R R work R free
0.218 0.214 0.284
Expression systems:
  • Escherichia coli
  • Not provided

Quick links

Citations

13 review citations

Neoepitopes as cancer immunotherapy targets: key challenges and opportunities.
Brennick et al. (2017)
12 more

8 mentions without citation

Individual HLA heterogeneity and its implications for cellular immune evasion in cancer and beyond.
Pagliuca et al. (2022)
7 more