Antitoxin HipB

UniProtKB accession: P23873

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Polymer Entities matching query 265

Go to UniProtKB: P23873

UniProtKB description: Antitoxin component of a type II toxin-antitoxin (TA) system. Neutralizes the toxic effect of cognate toxin HipA (PubMed:20616060). Also neutralizes the toxic effect of non-cognate toxin YjjJ (PubMed:28430938). Binds to operator sites with the consensus sequence 5-'TATCCN(8)GGATA-3' to repress the hipBA operon promoter (PubMed:8021189, PubMed:19150849); binding of HipB(2) to DNA induces a 70 degree bend (PubMed:19150849). This forces HipA dimerization, which blocks HipA's active site and thus its toxic action (PubMed:26222023). May play a role in biofilm formation (PubMed:23329678).

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