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Kefc C-terminal domain in complex with keff and esg

Analyse Kefc C-terminal domain in complex with keff and esg in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
3L9X
Type
protein
Length
672 residues
Chains
2
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Glutathione-regulated potassium-efflux system protein kefc, linker, ancillary protein keff
UniProt
P03819, P0A754
Ligands
FMN, ESG, L9X, ZN, SO4
Pockets
13 · best druggability 0.71

Structure

x-ray diffraction · 1 distinct chain · 49% helix, 17% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, BGlutathione-regulated potassium-efflux system protein kefc, linker, ancillary protein keffprotein33649% helix, 17% strandP03819, P0A754

Ligands and binding sites

  • FMN · Flavin mononucleotide · ligand · 2 copies · chains A, B
  • ESG · L-gamma-glutamyl-S-[(3S)-1-ethyl-2,5-dioxopyrrolidin-3-yl]-L-cysteinylglycine · ligand · chains A, B
  • L9X · L-gamma-glutamyl-S-[(3R)-1-ethyl-2,5-dioxopyrrolidin-3-yl]-L-cysteinylglycine · ligand · chains A, B
  • ZN · Zinc ion · metal · 2 copies · chains A, B
  • SO4 · Sulfate ion · ion · 2 copies · chains A, B

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
14420.710.8241empty
23450.640.7925empty
34090.610.7635FMN
43610.600.7635FMN
51640.520.7922empty

Interfaces

1 interface between chains.

  • A–B · 4406 Ų buried · 53 hydrogen bonds · protein-protein

Compared structures

  • 3L9X · KefC C-terminal domain in complex with KefF and ESG · the same entry in another collection · chain B against B, TM-score 1.00
  • P0A754 · AlphaFold monomer V2.0 prediction for glutathione-regulated potassium-efflux system… · a predicted model of the same protein · chain A against A, TM-score 0.52
  • P03819 · AlphaFold monomer V2.0 prediction for glutathione-regulated potassium-efflux system… · a predicted model of the same protein · chain A against A, TM-score 0.48

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