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Recruiting zinc to mediate potent, specific inhibition of serine proteases

Analyse Recruiting zinc to mediate potent, specific inhibition of serine proteases in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
1C1V
Type
protein
Length
299 residues
Chains
3
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Thrombin light chain; Thrombin heavy chain; Hirudin-2
EC
3.4.21.5
UniProt
P00734, P28504
Ligands
BAB, ZN, NA
Pockets
2 · best druggability 0.53

Structure

x-ray diffraction · 3 distinct chains · 17% helix, 30% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
LThrombin light chain (EC 3.4.21.5)protein3628% helix, 8% strandP00734
HThrombin heavy chain (EC 3.4.21.5)protein25215% helix, 34% strandP00734
IHirudin-2protein1127% helix, 0% strandP28504

Ligands and binding sites

  • BAB · Bis(5-amidino-benzimidazolyl)methane · ligand · chains H
  • ZN · Zinc ion · metal · 2 copies · chains H
  • NA · Sodium ion · metal · chains H

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
12530.530.7641ZN, BAB
2590.300.7516empty

Interfaces

2 interfaces between chains.

  • L–H · 1402 Ų buried · 25 hydrogen bonds · protein-protein
  • H–I · 676 Ų buried · 9 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 4 disulfide, 1 modified (disulfide, sulfation).

Compared structures

  • 1C1V · Recruiting zinc to mediate potent, specific inhibition of serine proteases · the same entry in another collection · chain H against H, TM-score 1.00
  • P28504 · AlphaFold monomer V2.0 prediction for hirudin-2 (P28504) · a predicted model of the same protein · chain I against A, TM-score 0.46

Analyse

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