Bacterial virus anti-defence systems · sequence & structure resource

Encyclopaedia of Bacterial Virus Anti-Defence Systems


Protein: AcrIIA27

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Overview

Mode of Action (MoA) None
Evidence Cloned from a Streptococcus mobile genetic element, AcrIIA27 provided complete rescue in E. coli expressing SpyCas9 or St3Cas9 in plasmid interference assays (ECO_0000017). In vitro cleavage assays confirmed inhibition only when Acr was added prior to DNA, suggesting inhibition of binding.
MoA Category unknown
Subtype(s) of the defence system(s) inhibited by the protein Defence Subtype Streptococcus thermophilus and Streptococcus pyogenes type II-A CRISPR-Cas
Relevant publication(s) DOI 10.1093/nar/gkac099
Other components of the anti-defence system Multicomponent System -
Known structure in PDB PDB ID -
Genome(s) encoding the protein Protein Source MGE in Streptococcus pyogenes K23866
Defence system(s) inhibited by the protein Defences CRISPR-Cas

3D structure

AlphaFold 3 model.

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Feature viewer - predicted secondary structure

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Pfam annotations

No Pfam domains found

Sequence Viewer

Amino acid position: -

MKTFNIIVSESANLKEHSSELVDNIIYKVEAKNRREAFKKAREEYSFSSKWKFNMRDLTAIDNTHRRAWGRRYLRVEEA