Bacterial virus anti-defence systems · sequence & structure resource

Encyclopaedia of Bacterial Virus Anti-Defence Systems


Protein: NTase

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Overview

Mode of Action (MoA) synthesises cyclic dinucleotides that bind to and competitively inhibit host STING immune sensors.
Evidence Mass spectrometry evidence (ECO_0001096) for production of cyclic nucleotide. The NTases inhibited the NADase activity of TIR-STING from Sphingobacterium faecium in a dose-dependent manner, measured using a fluorescent ε-NAD substrate assay (ECO_0000184).
MoA Category uncategorised
Subtype(s) of the defence system(s) inhibited by the protein Defence Subtype Sphingobacterium faecium TIR-STING effector
Relevant publication(s) DOI 10.1016/j.celrep.2023.112305
Other components of the anti-defence system Multicomponent System -
Known structure in PDB PDB ID -
Genome(s) encoding the protein Protein Source Bacillus phage Bcp1
Defence system(s) inhibited by the protein Defences CBASS, CRISPR-Cas
View homologs from eukaryotic dsDNA viruses

3D structure

AlphaFold 3 model.

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Feature viewer - predicted secondary structure

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Pfam annotations

Pfam Name Pfam Acc Pfam Length Colour HMM Start HMM End Ali Start Ali End Env Start Env End Evalue
RlaP PF10127 249 19 248 17 240 7 241 1.8e-19

Sequence Viewer

Amino acid position: -

MKTVDLSVTGMSWMEERTILLTPYGSRLYGTDTENSDWDFKGVCIPPKEYFLGLETFNEYNNTGGKTFKNTKDDVDINIIHVSKFVKDAMHGVPNNIEVLFAREQDYIILTELGQVLRDNRHLFLSKQIITKFGGYTRSLTNKLKNGAGRQELVEEFGYDTKNFMQGVRLQLSAIEILETGDYSTYRPERDFLLGCRNGEYTREQALALVESYDERLQVAHENSKLPEKPDYNKINGMLMAINEDALKFGIHS