SMTL ID : 7wiw.1

Cryo-EM structure of Mycobacterium tuberculosis irtAB complexed with ATP in an occluded conformation

Coordinates

PDB Format

Method

ELECTRON MICROSCOPY

Oligo State

hetero-1-1-mer

Ligands

2 x ATP: ADENOSINE-5'-TRIPHOSPHATE(Non-covalent)

ATP.1: 22 residues within 4Å: Chain A: Y.341, G.343, V.348, S.368, G.369, C.370, G.371, K.372, S.373, T.374, Q.414, H.526 Chain B: R.728, N.743, S.744, G.745, L.746, S.747, G.749, E.750, F.775 Ligands: MG.2 23 PLIP interactions: 14 interactions with chain A, 9 interactions with chain B Hydrogen bonds: A:G.369, A:G.369, A:C.370, A:G.371, A:K.372, A:S.373, A:T.374, A:Q.414, A:Q.414, A:Q.414, B:N.743, B:G.745, B:L.746, B:S.747, B:S.747, B:G.749, B:E.750, B:E.750, B:F.775 Salt bridges: A:K.372, A:H.526 pi-Stacking: A:Y.341, A:Y.341 ATP.3: 22 residues within 4Å: Chain A: R.454, S.468, A.469, S.471, G.472, G.473, E.474, A.499 Chain B: T.383, Y.619, V.625, S.645, G.646, S.647, G.648, K.649, S.650, T.651, Q.691, Q.771, H.802 Ligands: MG.4 24 PLIP interactions: 18 interactions with chain B, 6 interactions with chain A Hydrogen bonds: B:T.383, B:T.383, B:G.646, B:G.646, B:S.647, B:G.648, B:K.649, B:S.650, B:T.651, B:T.651, B:Q.691, B:Q.691, B:Q.771, A:R.454, A:S.471, A:G.472, A:G.473, A:E.474, A:A.499 Salt bridges: B:K.649, B:K.649, B:H.802 pi-Stacking: B:Y.619, B:Y.619

3 x MG: MAGNESIUM ION(Non-covalent)

MG.2: 3 residues within 4Å: Chain A: S.373, Q.414 Ligands: ATP.1 1 PLIP interactions: 1 interactions with chain A Metal complexes: A:S.373 MG.4: 3 residues within 4Å: Chain B: S.650, Q.691 Ligands: ATP.3 1 PLIP interactions: 1 interactions with chain B Metal complexes: B:S.650 MG.5: 3 residues within 4Å: Chain B: H.356, H.402, H.407 3 PLIP interactions: 3 interactions with chain B Metal complexes: B:H.356, B:H.402, B:H.407

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Sun, S. et al., Cryo-EM structures for the Mycobacterium tuberculosis iron-loaded siderophore transporter IrtAB. Protein Cell (2023)

Release Date

2023-01-25

Peptides

Mycobactin import ATP-binding/permease protein IrtB: A
Mycobactin import ATP-binding/permease protein IrtA: B

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
B

B
A

Membrane

We predict this structure to be a membrane protein.
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Mycobactin import ATP-binding/permease protein IrtB

Mycobactin import ATP-binding/permease protein IrtA