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Crystal structure of acivicin-inhibited gamma-glutamyltranspeptidase reveals critical roles for its C-terminus in autoprocessing and catalysis

Analyse Crystal structure of acivicin-inhibited gamma-glutamyltranspeptidase reveals… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
3FNM
Type
protein
Length
1,066 residues
Chains
4
Method
x-ray diffraction
Collection
MolNFT v2 / PDB Bank
Contract
0xd58B01f6C18086e5202cdC5D7Ad3E41790360102
Owner
0xF4e1AA6f26B7DA48EeAD9B24a97927303eeA07b8
Resolution
1.7
Source
Helicobacter pylori
Molecule
Gamma-glutamyltranspeptidase (Ggt) Large subunit; Gamma-glutamyltranspeptidase (Ggt)…
EC
2.3.2.2
UniProt
O25743
Ligands
AVN
Pockets
7 · best druggability 0.79

Structure

x-ray diffraction · resolution 1.7 · 3 distinct chains · 43% helix, 16% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AGamma-glutamyltranspeptidase (Ggt) Large subunit (EC 2.3.2.2)protein34249% helix, 14% strandO25743
B, DGamma-glutamyltranspeptidase (Ggt) Small subunit (EC 2.3.2.2)protein18818% helix, 26% strandO25743
CGamma-glutamyltranspeptidase (Ggt) Large subunit (EC 2.3.2.2)protein34850% helix, 13% strandO25743

Ligands and binding sites

  • AVN · (2S)-amino[(5s)-3-chloro-4,5-dihydroisoxazol-5-yl]acetic acid · ligand · 2 copies · chains A, B, C, D

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
17780.790.8280empty
21600.400.7324empty
3770.400.7916empty
41340.380.7316empty
5780.370.7723empty

Interfaces

6 interfaces between chains.

  • A–B · 5766 Ų buried · 113 hydrogen bonds · protein-protein
  • C–D · 5661 Ų buried · 112 hydrogen bonds · protein-protein
  • B–D · 416 Ų buried · 2 hydrogen bonds · protein-protein
  • B–C · 192 Ų buried · 3 hydrogen bonds · protein-protein
  • A–D · 173 Ų buried · 3 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 2 covalent (covalent ligand).

Compared structures

  • 3FNM · Crystal structure of acivicin-inhibited gamma-glutamyltranspeptidase reveals critical… · the same entry in another collection · chain A against A, TM-score 1.00

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