Solution NMR structure of the apo form of a ribonuclease H domain of protein DSY1790 from Desulfitobacterium hafniense, Northeast Structural Genomics target DhR1A
RNase H digests the RNA strand of an RNA/DNA hybrid. Important enzyme in retroviral replication cycle, and often found as a domain associated with reverse transcriptases. Structure is a mixed alpha+beta fold with three a/b/a layers.