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HLA class I micropolymorphisms determine peptide-HLA landscape and dictate differential HIV-1 escape through identical epitopes

Analyse HLA class I micropolymorphisms determine peptide-HLA landscape and dictate… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
4U1H
Type
protein
Length
386 residues
Chains
3
Method
x-ray diffraction
Collection
MolNFT v2 / PDB Bank
Contract
0xd58B01f6C18086e5202cdC5D7Ad3E41790360102
Owner
0xF4e1AA6f26B7DA48EeAD9B24a97927303eeA07b8
Resolution
1.59
Source
Homo sapiens; SYNTHETIC CONSTRUCT
Molecule
HLA class I histocompatibility antigen, B-7 alpha chain; Beta-2-microglobulin; GAG protein
UniProt
P01889, P61769, Q70A36
Pockets
5 · best druggability 0.70

Structure

x-ray diffraction · resolution 1.59 · 3 distinct chains · 19% helix, 41% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AHLA class I histocompatibility antigen, B-7 alpha chainprotein27727% helix, 39% strandP01889
BBeta-2-microglobulinprotein1000% helix, 49% strandP61769
CGAG proteinprotein90% helix, 0% strandQ70A36

Ligands and binding sites

  • EDO · 1,2-ethanediol · additive · 11 copies · chains A, C, B
  • GOL · Glycerol · additive · 3 copies · chains A, B, C

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
16810.700.7855EDO
21630.500.7827empty
31050.420.7722EDO
4530.380.8014EDO
5670.310.7517empty

Interfaces

2 interfaces between chains.

  • A–B · 1306 Ų buried · 24 hydrogen bonds · protein-protein
  • A–C · 898 Ų buried · 19 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 3 disulfide (disulfide).

Compared structures

  • 4U1H · HLA class I micropolymorphisms determine peptide-HLA landscape and dictate differential… · the same entry in another collection · chain A against A, TM-score 1.00
  • P01889 · AlphaFold monomer V2.0 prediction for HLA class I histocompatibility antigen, B alpha… · a predicted model of the same protein · chain A against A, TM-score 1.00
  • P61769 · AlphaFold monomer V2.0 prediction for beta-2-microglobulin (P61769) · a predicted model of the same protein · chain B against A, TM-score 0.98

Analyse

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