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B. subtilis glutamine synthetase structures reveal large active site conformational changes and basis for isoenzyme specific regulation: structure of apo form of gs

Analyse B. subtilis glutamine synthetase structures reveal large active site… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
4LNN
Type
protein
Length
5,257 residues
Chains
12
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Glutamine synthetase
EC
6.3.1.2
UniProt
P12425
Ligands
MG, SO4
Pockets
20 · best druggability 0.82

Structure

x-ray diffraction · 5 distinct chains · 37% helix, 22% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, B, DGlutamine synthetase (EC 6.3.1.2)protein43937% helix, 23% strandP12425
C, E, G, J, KGlutamine synthetase (EC 6.3.1.2)protein43838% helix, 24% strandP12425
F, HGlutamine synthetase (EC 6.3.1.2)protein43737% helix, 22% strandP12425
IGlutamine synthetase (EC 6.3.1.2)protein43637% helix, 22% strandP12425
LGlutamine synthetase (EC 6.3.1.2)protein44037% helix, 21% strandP12425

Ligands and binding sites

  • MG · Magnesium ion · metal · 25 copies · chains A, B, C, D, E, F, G, H, I, J, K, L
  • SO4 · Sulfate ion · ion · 5 copies · chains D, C, E, F, H

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
19840.820.8395MG
27330.810.8575MG
38900.800.8395MG
47420.800.8473MG
55540.800.8760MG

Interfaces

24 interfaces between chains.

  • F–L · 2236 Ų buried · 20 hydrogen bonds · protein-protein
  • B–H · 2188 Ų buried · 23 hydrogen bonds · protein-protein
  • E–K · 2143 Ų buried · 20 hydrogen bonds · protein-protein
  • D–J · 2137 Ų buried · 26 hydrogen bonds · protein-protein
  • A–G · 2120 Ų buried · 25 hydrogen bonds · protein-protein

Compared structures

  • 4LNN · B. subtilis glutamine synthetase structures reveal large active site conformational… · the same entry in another collection · chain K against K, TM-score 1.00

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