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Plasmid pRiA4b ORF-3-like protein Members of this family are similar to the protein product of ORF-3 found on plasmid pRiA4 in the bacterium Agrobacterium rhizogenes. This plasmid is responsible for tumourigenesis at wound sites of plants infected by this bacterium, but the ORF-3 product does not seem to be involved in the pathogenetic process. Other proteins found in this family are annotated as being putative TnpR resolvases (Swiss:Q9LCU7, Swiss:Q50439), but no further evidence was found to back this. Moreover, another member of this family is described as a probable lexA repressor and in fact carries a LexA DNA binding domain (pfam01726), but no references were found to expand on this.
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Jiyao W et al.(2023). "The conserved domain database in 2023.",