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Crystal structure of mouse IgG2b Fc

Analyse Crystal structure of mouse IgG2b Fc in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
6KRU
Type
protein
Length
1,215 residues
Chains
6
Method
x-ray diffraction
Collection
MolNFT v2 / PDB Bank
Contract
0xd58B01f6C18086e5202cdC5D7Ad3E41790360102
Owner
0xF4e1AA6f26B7DA48EeAD9B24a97927303eeA07b8
Resolution
2.3
Source
Mus musculus
Molecule
Ig gamma-2B chain C region
UniProt
P01867
Ligands
NAG, MAN, GAL, FUC
Pockets
13 · best druggability 0.78

Structure

x-ray diffraction · resolution 2.3 · 5 distinct chains · 11% helix, 50% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, BIg gamma-2B chain C regionprotein20811% helix, 49% strandP01867
CIg gamma-2B chain C regionprotein20311% helix, 51% strandP01867
DIg gamma-2B chain C regionprotein20111% helix, 50% strandP01867
EIg gamma-2B chain C regionprotein19112% helix, 49% strandP01867
FIg gamma-2B chain C regionprotein20412% helix, 50% strandP01867

Ligands and binding sites

  • NAG · 2-acetamido-2-deoxy-beta-D-glucopyranose · sugar · 24 copies · chains A, D, B, C, E, F
  • MAN · alpha-D-mannopyranose · sugar · 18 copies · chains A, D, B, C, E, F
  • GAL · beta-D-galactopyranose · sugar · 6 copies · chains A, B, C, D, E, F
  • FUC · alpha-L-fucopyranose · sugar · 5 copies · chains A, D, B, C, E, F

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
17870.780.8286empty
26790.760.8272empty
31270.450.7820empty
41290.440.7723empty
51100.400.7721empty

Interfaces

12 interfaces between chains.

  • E–F · 1142 Ų buried · 12 hydrogen bonds · protein-protein
  • C–D · 1140 Ų buried · 8 hydrogen bonds · protein-protein
  • A–B · 1081 Ų buried · 10 hydrogen bonds · protein-protein
  • C–E · 335 Ų buried · 9 hydrogen bonds · protein-protein
  • B–E · 304 Ų buried · 3 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 12 disulfide, 6 glycan (disulfide, N-glycosylation).

Compared structures

  • 6KRU · Crystal structure of mouse IGG2B Fc · the same entry in another collection · chain F against F, TM-score 1.00
  • P01867 · AlphaFold monomer V2.0 prediction for ig gamma-2B chain C region (P01867) · a predicted model of the same protein · chain A against A, TM-score 0.97

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