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Crystal structure of the PAAA2-PARE2 antitoxin-toxin complex

Analyse Crystal structure of the PAAA2-PARE2 antitoxin-toxin complex in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
5CW7
Type
protein
Length
1,235 residues
Chains
16
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
PAAA2; Plasmid stabilization protein pare
UniProt
A0A0F6F6Q9, A0A0D7C2L1
Pockets
20 · best druggability 0.86

Structure

x-ray diffraction · 8 distinct chains · 49% helix, 16% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, OPAAA2protein6060% helix, 7% strandA0A0F6F6Q9
B, D, H, J, L, NPlasmid stabilization protein pareprotein9536% helix, 26% strandA0A0D7C2L1
CPAAA2protein5765% helix, 4% strandA0A0F6F6Q9
E, IPAAA2protein5963% helix, 7% strandA0A0F6F6Q9
FPlasmid stabilization protein pareprotein9635% helix, 26% strandA0A0D7C2L1
G, KPAAA2protein6162% helix, 7% strandA0A0F6F6Q9
MPAAA2protein5761% helix, 7% strandA0A0F6F6Q9
PPlasmid stabilization protein pareprotein9538% helix, 26% strandA0A0D7C2L1

Ligands and binding sites

  • GOL · Glycerol · additive · 8 copies · chains B, C, D, A, F, G, H, E, I, J, L, K, N, O, P, M

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

Pockets

20 pockets found on a 1 Å grid, 9 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
19140.860.8878empty
25070.810.8858empty
34060.780.8736empty
43300.740.8662GOL
51680.690.8847GOL

Interfaces

38 interfaces between chains.

  • O–P · 1643 Ų buried · 28 hydrogen bonds · protein-protein
  • I–J · 1630 Ų buried · 31 hydrogen bonds · protein-protein
  • C–D · 1620 Ų buried · 22 hydrogen bonds · protein-protein
  • G–H · 1610 Ų buried · 24 hydrogen bonds · protein-protein
  • E–F · 1583 Ų buried · 23 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 32 modified (engineered).

Compared structures

  • 5CW7 · Crystal structure of the PaaA2-ParE2 antitoxin-toxin complex · the same entry in another collection · chain A against A, TM-score 1.00

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