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Crystal structure of human cathepsin-S with bound ligand

Analyse Crystal structure of human cathepsin-S with bound ligand in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
5QC4
Type
protein
Length
441 residues
Chains
2
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Cathepsin S
EC
3.4.22.27
UniProt
P25774
Ligands
BC7
Pockets
4 · best druggability 0.75

Structure

x-ray diffraction · 2 distinct chains · 29% helix, 23% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
ACathepsin S (EC 3.4.22.27)protein22130% helix, 23% strandP25774
BCathepsin S (EC 3.4.22.27)protein22029% helix, 24% strandP25774

Ligands and binding sites

  • BC7 · 2-[5-[5-ethanoyl-1-[(2~{R})-2-oxidanyl-3-[4-(2-oxidanylpropan-2-yl)piperidin-1-yl]propyl]-6,7-dihydro-4~{H}-pyrazolo[4,3-c]pyridin-3-yl]-2-(trifluoromethyl)phenyl]sulfanyl-1-pyrrolidin-1-yl-ethanone · ligand · 2 copies · chains A, B

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

Pockets

4 pockets found on a 1 Å grid, 3 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
16230.750.8177empty
2810.520.8418empty
31750.510.7831empty
4950.370.7620empty

Interfaces

1 interface between chains.

  • A–B · 616 Ų buried · 7 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 6 disulfide (disulfide).

Compared structures

  • 5QC4 · Crystal structure of human Cathepsin-S with bound ligand · the same entry in another collection · chain A against A, TM-score 1.00
  • P25774 · AlphaFold monomer V2.0 prediction for cathepsin S (P25774) · a predicted model of the same protein · chain B against A, TM-score 0.99

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