SMTL ID : 7ak8.1 (2 other biounits)

Structure of Salmonella TacT1 toxin bound to TacA1 antitoxin C-terminal peptide

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.50 Å

Oligo State

hetero-2-2-mer

Ligands

2 x ACO: ACETYL COENZYME *A(Non-covalent)

ACO.1: 24 residues within 4Å: Chain A: E.26, L.29, A.93, L.95, A.96, V.97, F.101, H.102, G.103, K.104, G.105, L.106, G.107, A.108, H.133, A.134, L.135, E.138, A.139, N.141, F.142, F.143, H.145, H.146 19 PLIP interactions: 18 interactions with chain A, 1 interactions with chain D Hydrophobic interactions: A:E.26, A:L.29, A:L.95, A:L.135 Hydrogen bonds: A:L.95, A:V.97, A:G.103, A:G.105, A:G.105, A:G.107, A:A.108, A:E.138 Water bridges: A:K.104, A:L.106, A:H.133 Salt bridges: A:H.102, A:H.145, D:K.29 pi-Stacking: A:F.142 ACO.2: 23 residues within 4Å: Chain B: E.26, L.29, A.93, L.95, A.96, V.97, H.102, G.103, G.105, L.106, G.107, A.108, V.132, H.133, A.134, L.135, E.138, A.139, N.141, F.142, F.143, H.145, H.146 18 PLIP interactions: 17 interactions with chain B, 1 interactions with chain C Hydrophobic interactions: B:L.29, B:L.95, B:L.135 Hydrogen bonds: B:L.95, B:V.97, B:H.102, B:G.103, B:G.105, B:G.105, B:G.107, B:A.108, B:H.133, B:L.135, B:E.138 Salt bridges: B:H.102, B:H.145 pi-Stacking: B:F.142 Water bridges: C:R.33

1 x GOL: GLYCEROL(Non-functional Binders)

GOL.3: 2 residues within 4Å: Chain B: R.117, R.120 3 PLIP interactions: 3 interactions with chain B Hydrogen bonds: B:R.117, B:R.120 Water bridges: B:N.124

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Grabe, G.J. et al., Auxiliary interfaces support the evolution of specific toxin-antitoxin pairing. Nat.Chem.Biol. (2021)

Release Date

2021-08-18

Peptides

GCN5 family acetyltransferase: AB
TacA1 antitoxin peptide: CD

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
G

D
H

GCN5 family acetyltransferase

TacA1 antitoxin peptide

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