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Structural and functional basis for HLA-G isoform recognition of immune checkpoint receptor lilrbs

Analyse Structural and functional basis for HLA-G isoform recognition of immune… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
6K60
Type
protein
Length
973 residues
Chains
8
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
HLA class I histocompatibility antigen, alpha chain G; Beta-2-microglobulin; Peptide from…
UniProt
P17693, P61769, A0A0U1RRH7, A0A0G2JQ44
Ligands
IOD
Pockets
11 · best druggability 0.79

Structure

x-ray diffraction · 6 distinct chains · 19% helix, 39% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AHLA class I histocompatibility antigen, alpha chain Gprotein25728% helix, 37% strandP17693
B, FBeta-2-microglobulinprotein1000% helix, 51% strandP61769
C, GPeptide from histone H2A.Jprotein90% helix, 0% strandA0A0U1RRH7
DLeukocyte immunoglobulin-like receptor subfamily B member 1protein1419% helix, 38% strandA0A0G2JQ44
EHLA class I histocompatibility antigen, alpha chain Gprotein27426% helix, 41% strandP17693
HLeukocyte immunoglobulin-like receptor subfamily B member 1protein838% helix, 30% strandA0A0G2JQ44

Ligands and binding sites

  • IOD · Iodide ion · ion · 8 copies · chains A, F, B, C, E, G

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

Pockets

11 pockets found on a 1 Å grid, 4 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
18860.790.8290empty
210330.780.8084empty
37640.770.8266empty
411160.770.7981IOD
5790.500.8421empty

Interfaces

11 interfaces between chains.

  • E–F · 1406 Ų buried · 29 hydrogen bonds · protein-protein
  • A–B · 1374 Ų buried · 21 hydrogen bonds · protein-protein
  • A–C · 999 Ų buried · 20 hydrogen bonds · protein-protein
  • E–G · 972 Ų buried · 20 hydrogen bonds · protein-protein
  • F–H · 741 Ų buried · 9 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 10 disulfide (disulfide).

Compared structures

  • 6K60 · Structural and functional basis for HLA-G isoform recognition of immune checkpoint… · the same entry in another collection · chain H against H, TM-score 1.00
  • P17693 · AlphaFold monomer V2.0 prediction for HLA class I histocompatibility antigen, alpha chain… · a predicted model of the same protein · chain E against A, TM-score 0.99
  • P61769 · AlphaFold monomer V2.0 prediction for beta-2-microglobulin (P61769) · a predicted model of the same protein · chain B against A, TM-score 0.99

Analyse

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