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Nanodisc reconstituted human ABCB1 in complex with MRK16 Fab and tariquidar

Analyse Nanodisc reconstituted human ABCB1 in complex with MRK16 Fab and tariquidar in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
7A6E
Type
protein
Length
1,596 residues
Chains
3
Method
electron microscopy
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Multidrug resistance protein 1; MRK16 Fab-fragment light chain; MRK16 Fab-fragment heavy…
EC
7.6.2.2, 7.6.2.1
UniProt
P08183
Ligands
CLR, R1H
Pockets
20 · best druggability 0.89

Structure

electron microscopy · 3 distinct chains · 47% helix, 20% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AMultidrug resistance protein 1 (EC 7.6.2.2, 7.6.2.1)protein116463% helix, 9% strandP08183
BMRK16 Fab-fragment light chainprotein2145% helix, 46% strand—
CMRK16 Fab-fragment heavy chainprotein2184% helix, 53% strand—

Ligands and binding sites

  • CLR · Cholesterol · ligand · 11 copies · chains A
  • R1H · tariquidar · ligand · 2 copies · chains A

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

Pockets

20 pockets found on a 1 Å grid, 13 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
19760.890.90103R1H
23900.780.8737empty
31040.740.9526empty
4580.740.9821empty
51190.690.9126empty

Interfaces

3 interfaces between chains.

  • B–C · 1959 Ų buried · 13 hydrogen bonds · protein-protein
  • A–C · 651 Ų buried · 10 hydrogen bonds · protein-protein
  • A–B · 229 Ų buried · 1 hydrogen bond · protein-protein

Modifications

Observed in the structure: 5 disulfide (disulfide).

Compared structures

  • 7A6E · Nanodisc reconstituted human ABCB1 in complex with MRK16 Fab and tariquidar · the same entry in another collection · chain A against A, TM-score 1.00
  • P08183 · AlphaFold monomer V2.0 prediction for ATP-dependent translocase ABCB1 (P08183) · a predicted model of the same protein · chain A against A, TM-score 0.87

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