Seroatlas · Protein domains

Ribonuclease H-like superfamily

IPR012337

Definition

The catalytic domain of several polynucleotidyl transferases share a similar structure, consisting of a 3-layer α/β/α fold that contains mixed β-sheets, suggesting that they share a similar mechanism of catalysis. Polynucleotidyl transferases containing this domain include ribonuclease H class I (RNase HI) and class II (RNase HII), HIV RNase (reverse transcriptase domain), retroviral integrase (catalytic domain), Mu transposase (core domain), transposase inhibitor Tn5 (containing additional all-α subdomains), DnaQ-like 3'-5' exonucleases (exonuclease domains), RuvC resolvase, and mitochondrial resolvase ydc2 (catalytic domain) [[cite:PMID:15299518], [cite:PMID:8696976], [cite:PMID:12823554]]. This superfamily also includes the YqgF domain, described as RNase H-like and typified by the Escherichia coli protein YqgF [[cite:PMID:14512736], [cite:PMID:10982859]]. YqgF domain-containing proteins are predicted to be ribonucleases or resolvases based on homology to RuvC Holliday junction resolvases.

74 human proteins with this domain

Each is a reviewed human protein in the Seroatlas serome and a potential autoantibody target; this domain groups them into one antibody-relevant category. Every entry links to its own record.

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