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A neutral diphosphate mimic crosslinks the active site of human O- glcnac transferase

Analyse A neutral diphosphate mimic crosslinks the active site of human O- glcnac… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
3TAX
Type
protein
Length
1,418 residues
Chains
4
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Udp-N-acetylglucosamine--peptide N- acetylglucosaminyltransferase 110 kda subunit; Casein…
EC
2.4.1.-, 2.7.11.1
UniProt
O15294, P68400
Ligands
UDP, FOR, SO4
Pockets
17 · best druggability 0.81

Structure

x-ray diffraction · 2 distinct chains · 51% helix, 13% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, CUdp-N-acetylglucosamine--peptide N- acetylglucosaminyltransferase 110 kda subunit (EC 2.4.1.-)protein69552% helix, 13% strandO15294
B, DCasein kinase II subunit alpha (EC 2.7.11.1)protein140% helix, 7% strandP68400

Ligands and binding sites

  • UDP · Uridine-5'-diphosphate · ligand · 2 copies · chains A, B, C, D
  • FOR · Formyl group · ligand · 2 copies · chains A, C
  • SO4 · Sulfate ion · ion · 4 copies · chains A, B, C, D

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

Pockets

17 pockets found on a 1 Å grid, 10 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
12500.810.9345UDP
211910.810.82116UDP, FOR, SO4
311210.760.7997empty
48900.760.7985SO4
5680.740.9817empty

Interfaces

3 interfaces between chains.

  • A–C · 992 Ų buried · 9 hydrogen bonds · protein-protein
  • C–D · 790 Ų buried · 6 hydrogen bonds · protein-protein
  • A–B · 790 Ų buried · 6 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 4 covalent (covalent ligand).

Compared structures

  • 3TAX · A Neutral Diphosphate Mimic Crosslinks the Active Site of Human O-GlcNAc Transferase · the same entry in another collection · chain A against A, TM-score 1.00
  • O15294 · AlphaFold monomer V2.0 prediction for udp-N-acetylglucosamine-- peptide… · a predicted model of the same protein · chain A against A, TM-score 0.99
  • P68400 · AlphaFold monomer V2.0 prediction for casein kinase II subunit alpha (P68400) · a predicted model of the same protein · chain B against A, TM-score 0.24

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