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Crystal structures of recombinant rat cathepsin B and a cathepsin B-inhibitor complex: implications for structure- based inhibitor design

Analyse Crystal structures of recombinant rat cathepsin B and a cathepsin B-inhibitor… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
1CTE
Type
protein
Length
506 residues
Chains
2
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Cathepsin B
EC
3.4.22.1
UniProt
P00787
Ligands
PYS
Pockets
1 · best druggability 0.77

Structure

x-ray diffraction · 1 distinct chain · 25% helix, 26% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, BCathepsin B (EC 3.4.22.1)protein25325% helix, 26% strandP00787

Ligands and binding sites

  • PYS · 2-pyridinethiol · ligand · 2 copies · chains A, B

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
19290.770.80106PYS

Interfaces

1 interface between chains.

  • A–B · 803 Ų buried · 13 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 12 disulfide, 2 covalent (disulfide, covalent ligand).

Compared structures

  • 1CTE · Crystal structures of recombinant rat cathepsin B and a cathepsin B-inhibitor complex… · the same entry in another collection · chain A against A, TM-score 1.00
  • P00787 · AlphaFold monomer V2.0 prediction for cathepsin B (P00787) · a predicted model of the same protein · chain A against A, TM-score 0.98

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