This domain is often found adjacent to the DHH domain, found in the RecJ-like phosphoesterase family IPR001667, and is called DHHA1 for DHH associated domain. DHHA1 is diagnostic of DHH subfamily 1 members [1]. This domain is also found in alanyl tRNA synthetase e.g. P00957, suggesting that it may have an RNA binding function. The domain is about 60 residues long and contains a conserved GG motif.

1. A novel family of predicted phosphoesterases includes Drosophila prune protein and bacterial RecJ exonuclease. Trends Biochem. Sci. 23, 17-9

This domain is often found adjacent to the DHH domain, found in the RecJ-like phosphoesterase fam
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