SMTL ID : 6wxq.1

Crystal structure of CRISPR-associated transcription factor Csa3 complexed with cA4

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.05 Å

Oligo State

homo-dimer

Ligands

1 x A- A- A- A: cyclic tetraadenylate(Non-covalent)

A-A-A-A.1: 31 residues within 4Å: Chain A: M.19, G.20, F.21, N.22, T.24, F.25, P.46, V.50, T.53, M.106, G.107, M.108, R.109, E.133, G.134 Chain B: M.19, G.20, F.21, N.22, F.25, P.46, V.50, T.53, T.105, M.106, G.107, M.108, R.109, E.133, G.134 Ligands: GOL.4 Protein-ligand interaction information (PLIP) not available

4 x GOL: GLYCEROL(Non-functional Binders)

GOL.2: 7 residues within 4Å: Chain A: L.104, R.109, N.112, T.113 Chain B: L.104, N.112, T.113 3 PLIP interactions: 2 interactions with chain A, 1 interactions with chain B Hydrogen bonds: A:R.109, A:T.113, B:L.104 GOL.3: 6 residues within 4Å: Chain B: P.99, R.125, F.126, T.127, N.143, D.144 4 PLIP interactions: 4 interactions with chain B Hydrogen bonds: B:F.126, B:T.127, B:T.127 Water bridges: B:N.143 GOL.4: 8 residues within 4Å: Chain A: D.132, R.138 Chain B: P.46, S.47, I.79, M.108, M.110 Ligands: A-A-A-A.1 5 PLIP interactions: 4 interactions with chain B, 1 interactions with chain A Hydrogen bonds: B:I.79 Water bridges: B:S.47, B:I.79, B:I.79, A:R.138 GOL.5: 6 residues within 4Å: Chain B: I.49, R.54, I.57, E.58, R.61, I.74 2 PLIP interactions: 2 interactions with chain B Hydrogen bonds: B:R.61, B:R.61

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Xia, P. et al., Structural basis of cyclic oligoadenylate binding to the transcription factor Csa3 outlines cross talk between type III and type I CRISPR systems. J.Biol.Chem. (2022)

Release Date

2021-11-17

Peptides

CRISPR-associated transcription factor Csa3 (Type I-A): AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
B

B
A

CRISPR-associated transcription factor Csa3 (Type I-A)