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Cryo-EM structure of the folate-specific ECF transporter complex in MSP2N2 lipid nanodiscs bound to ATP and ADP

Analyse Cryo-EM structure of the folate-specific ECF transporter complex in MSP2N2… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
8BMP
Type
protein
Length
989 residues
Chains
4
Method
electron microscopy
Collection
MolNFT v2 / PDB Bank
Contract
0xd58B01f6C18086e5202cdC5D7Ad3E41790360102
Owner
0xF4e1AA6f26B7DA48EeAD9B24a97927303eeA07b8
Resolution
3.2
Source
Lactobacillus delbrueckii subsp. bulgaricus ATCC 11842 = JCM 1002
Molecule
Energy-coupling factor transporter ATP-binding protein EcfA1; Energy-coupling factor…
EC
7.-.-.-, 3.6.3.-
UniProt
Q1GBJ0, Q1GBI9, Q1G929, Q1GBI8
Ligands
ATP, ADP, MG
Pockets
14 · best druggability 0.79

Structure

electron microscopy · resolution 3.2 · 4 distinct chains · 53% helix, 12% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AEnergy-coupling factor transporter ATP-binding protein EcfA1 (EC 7.-.-.-)protein27838% helix, 16% strandQ1GBJ0
BEnergy-coupling factor transporter ATP-binding protein EcfA2 (EC 3.6.3.-)protein28138% helix, 21% strandQ1GBI9
CFolate family ECF transporter S componentprotein16975% helix, 4% strandQ1G929
DEnergy-coupling factor transporter transmembrane protein EcfTprotein26170% helix, 3% strandQ1GBI8

Ligands and binding sites

  • ATP · Adenosine-5'-triphosphate · ligand · chains A, C
  • ADP · Adenosine-5'-diphosphate · ligand · chains B
  • MG · Magnesium ion · metal · chains B

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
110430.790.8057empty
27140.750.8077empty
35030.750.8370ATP, MG
44360.730.8362empty
5700.550.8718empty

Interfaces

5 interfaces between chains.

  • C–D · 3086 Ų buried · 3 hydrogen bonds · protein-protein
  • A–D · 1437 Ų buried · 17 hydrogen bonds · protein-protein
  • A–B · 1142 Ų buried · 7 hydrogen bonds · protein-protein
  • B–D · 770 Ų buried · 6 hydrogen bonds · protein-protein
  • B–C · 241 Ų buried · 1 hydrogen bond · protein-protein

Compared structures

  • Q1GBI9 · AlphaFold monomer V2.0 prediction for energy-coupling factor transporter ATP-binding… · a predicted model of the same protein · chain B against A, TM-score 0.99
  • Q1GBJ0 · AlphaFold monomer V2.0 prediction for energy-coupling factor transporter ATP-binding… · a predicted model of the same protein · chain A against A, TM-score 0.97

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