Bacterial virus anti-defence systems · sequence & structure resource

Encyclopaedia of Bacterial Virus Anti-Defence Systems


Protein: RIIA

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Overview

Mode of Action (MoA) None
Evidence Plasmid-expressed rexA and rexB were sufficient to restrict T4 rII mutants, even in the absence of lambda cI repressor, establishing a direct functional interaction between RIIA and rex products. Growth restriction of wild-type T4 (rIIA⁺, rIIB⁺) by rex was demonstrated in engineered E. coli strains expressing rex genes under strong promoters (e.g., prex20) and was more stringent at higher temperatures. This indicates that RIIA is involved in mitigating rex-induced abortive infection under normal conditions.
MoA Category unknown
Subtype(s) of the defence system(s) inhibited by the protein Defence Subtype Escherichia coli RexAB
Relevant publication(s) DOI 10.1128/jvi.61.12.3790-3794.1987
Other components of the anti-defence system Multicomponent System -
Known structure in PDB PDB ID -
Genome(s) encoding the protein Protein Source Enterobacteria phage T4
Defence system(s) inhibited by the protein Defences RexAB
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

No Pfam domains found

Sequence Viewer

Amino acid position: -

MIITTEKETILGNGSKSKAFSITASPKVFKILSSDLYTNKIRAVVRELITNMIDAHALNGNPEKFIIQVPGRLDPRFVCRDFGPGMSDFDIQGDDNSPGLYNSYFSSSKAESNDFIGGFGLGSKSPFSYTDTFSITSYHKGEIRGYVAYMDGDGPQIKPTFVKEMGPDDKTGIEIVVPVEEKDFRNFAYEVSYIMRPFKDLAIINGLDREIDYFPDFDDYYGVNPERYWPDRGGLYAIYGGIVYPIDGVIRDRNWLSIRNEVNYIKFPMGSLDIAPSREALSLDDRTRKNIIERVKELSEKAFNEDVKRFKESTSPRHTYRELMKMGYSARDYMISNSVKFTTKNLSYKKMQSMFEPDSKLCNAGVVYEVNLDPRLKRIKQSHETSAVASSYRLFGINTTKINIVIDNIKNRVNIVRGLARALDDSEFNNTLNIHHNERLLFINPEVESQIDLLPDIMAMFESDEVNIHYLSEIEALVKSYIPKVVKSKAPRPKAATAFKFEIKDGRWEKRNYLRLTSEADEITGYVAYMHRSDIFSMDGTTSLCHPSMNILIRMANLIGINEFYVIRPLLQKKVKELGQCQCIFEALRDLYVDAFDDVDYDKYVGYSSSAKRYIDKIIKYPELDFMMKYFSIDEVSEEYTRLANMVSSLQGVYFNGGKDTIGHDIWTVTNLFDVLSNNASKNSDKMVAEFTKKFRIVSDFIGYRNSLSDDEVSQIAKTMKALAA