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Class I MHC (HLA-A*02) presenting alpha fetoprotein peptide (afp)

Analyse Class I MHC (HLA-A*02) presenting alpha fetoprotein peptide (afp) in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
7RE8
Type
protein
Length
768 residues
Chains
6
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
MHC class I antigen, a-2 alpha chain; Beta-2-microglobulin…
UniProt
A0A5B8RNS7, P61769
Pockets
6 · best druggability 0.76

Structure

x-ray diffraction · 3 distinct chains · 19% helix, 42% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, DMHC class I antigen, a-2 alpha chainprotein27527% helix, 40% strandA0A5B8RNS7
B, EBeta-2-microglobulinprotein1000% helix, 49% strandP61769
C, FPhe-met-asn-lys-phe-ile-tyr-glu-ileprotein90% helix, 0% strand—

Ligands and binding sites

  • PEG · Di(hydroxyethyl)ether · additive · 10 copies · chains A, B, D, E
  • PGE · Triethylene glycol · additive · 6 copies · chains A, B, C, D, F, E
  • 1PE · Pentaethylene glycol · additive · 2 copies · chains A, B, D, E

Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.

Pockets

6 pockets found on a 1 Å grid, 2 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
111910.760.79109PEG, PGE
24560.690.8042PEG
31040.440.78171PE
4940.420.78191PE
5770.380.7817empty

Interfaces

5 interfaces between chains.

  • D–E · 1435 Ų buried · 29 hydrogen bonds · protein-protein
  • A–B · 1433 Ų buried · 26 hydrogen bonds · protein-protein
  • F–D · 955 Ų buried · 11 hydrogen bonds · protein-protein
  • A–C · 942 Ų buried · 14 hydrogen bonds · protein-protein
  • A–D · 467 Ų buried · 7 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 6 disulfide (disulfide).

Compared structures

  • 7RE8 · Class I MHC (HLA-A*02) presenting alpha fetoprotein peptide (AFP) · the same entry in another collection · chain E against E, TM-score 1.00
  • P61769 · AlphaFold monomer V2.0 prediction for beta-2-microglobulin (P61769) · a predicted model of the same protein · chain E against A, TM-score 0.99

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