SMTL ID : 9nqj.1

Cryo-EM structure of a bacterial prototype ATP-binding cassette transporter MalFGK2.

Coordinates

PDB Format Compare

Method

ELECTRON MICROSCOPY

Oligo State

hetero-2-1-1-mer

Ligands

2 x MG: MAGNESIUM ION(Non-covalent)

MG.1: 4 residues within 4Å: Chain A: S.42, Q.81 Ligands: ADP.2, VO4.3 1 PLIP interactions: 1 interactions with chain A Metal complexes: A:S.42 MG.6: 5 residues within 4Å: Chain B: S.42, Q.81, D.157 Ligands: ADP.4, VO4.5 1 PLIP interactions: 1 interactions with chain B Metal complexes: B:S.42

2 x ADP: ADENOSINE-5'-DIPHOSPHATE(Non-covalent)(Covalent)

ADP.2: 16 residues within 4Å: Chain A: W.12, V.17, G.38, C.39, G.40, K.41, S.42, T.43 Chain B: L.125, R.128, A.132, L.133, S.134, Q.137 Ligands: MG.1, VO4.3 14 PLIP interactions: 5 interactions with chain B, 9 interactions with chain A Hydrogen bonds: B:R.128, B:L.133, B:S.134, B:Q.137, B:Q.137, A:G.38, A:G.40, A:K.41, A:S.42, A:T.43, A:T.43 Salt bridges: A:K.41 pi-Stacking: A:W.12, A:W.12 ADP.4: 15 residues within 4Å: Chain A: L.125, R.128, A.132, L.133, S.134, Q.137 Chain B: W.12, V.17, G.38, G.40, K.41, S.42, T.43 Ligands: VO4.5, MG.6 15 PLIP interactions: 6 interactions with chain A, 9 interactions with chain B Hydrogen bonds: A:R.128, A:S.134, A:S.134, A:G.135, A:Q.137, A:Q.137, B:G.38, B:G.38, B:G.40, B:S.42, B:T.43, B:T.43 Salt bridges: B:K.41 pi-Stacking: B:W.12, B:W.12

2 x VO4: VANADATE ION(Non-covalent)

VO4.3: 13 residues within 4Å: Chain A: S.37, G.38, K.41, S.42, Q.81, E.158, H.191 Chain B: S.134, G.135, G.136, N.162 Ligands: MG.1, ADP.2 6 PLIP interactions: 3 interactions with chain A, 3 interactions with chain B Hydrogen bonds: A:S.37, A:G.38, A:Q.81, B:S.134, B:G.135, B:G.136 VO4.5: 14 residues within 4Å: Chain A: S.134, G.135, G.136, Q.137, N.162 Chain B: S.37, G.38, K.41, S.42, Q.81, E.158, H.191 Ligands: ADP.4, MG.6 8 PLIP interactions: 5 interactions with chain B, 3 interactions with chain A Hydrogen bonds: B:S.37, B:G.38, B:K.41, B:Q.81, B:H.191, A:G.135, A:G.136, A:Q.137

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Ren, Q. et al., DeFrND: detergent-free reconstitution into native nanodiscs with designer membrane scaffold peptides. Nat Commun (2025)

Release Date

2025-09-24

Peptides

Maltose/maltodextrin import ATP-binding protein MalK: AB
Maltose/maltodextrin transport system permease protein MalF: C
Maltose/maltodextrin transport system permease protein MalG: D

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
F

D
G

Membrane

We predict this structure to be a membrane protein.
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Maltose/maltodextrin import ATP-binding protein MalK

Maltose/maltodextrin transport system permease protein MalF

Maltose/maltodextrin transport system permease protein MalG

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