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Crystal structure of protein L-isoaspartyl methyltransferase from escherichia COLI

Analyse Crystal structure of protein L-isoaspartyl methyltransferase from escherichia… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
3LBF
Type
protein
Length
817 residues
Chains
4
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Protein-L-isoaspartate O-methyltransferase
EC
2.1.1.77
UniProt
P0A7A5
Ligands
SAH, PO4
Pockets
7 · best druggability 0.76

Structure

x-ray diffraction · 2 distinct chains · 34% helix, 27% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, B, CProtein-L-isoaspartate O-methyltransferase (EC 2.1.1.77)protein20735% helix, 27% strandP0A7A5
DProtein-L-isoaspartate O-methyltransferase (EC 2.1.1.77)protein19633% helix, 28% strandP0A7A5

Ligands and binding sites

  • SAH · S-adenosyl-L-homocysteine · ligand · 4 copies · chains A, B, C, D
  • PO4 · Phosphate ion · ion · 6 copies · chains A, B, C
  • GOL · Glycerol · additive · chains A, B

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

Pockets

7 pockets found on a 1 Å grid, 6 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
18210.760.80122GOL, SAH
21630.700.8938SAH
32000.700.8742SAH
46160.660.7656empty
52050.660.8441SAH

Interfaces

5 interfaces between chains.

  • A–B · 645 Ų buried · 10 hydrogen bonds · protein-protein
  • C–D · 602 Ų buried · 9 hydrogen bonds · protein-protein
  • B–C · 259 Ų buried · 0 hydrogen bonds · protein-protein
  • A–C · 256 Ų buried · 5 hydrogen bonds · protein-protein
  • B–D · 36 Ų buried · 0 hydrogen bonds · protein-protein

Compared structures

  • 3LBF · Crystal structure of Protein L-isoaspartyl methyltransferase from Escherichia coli · the same entry in another collection · chain D against D, TM-score 1.00
  • P0A7A5 · AlphaFold monomer V2.0 prediction for protein-L-isoaspartate O-methyltransferase (P0A7A5) · a predicted model of the same protein · chain C against A, TM-score 0.99

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