SUPERFAMILY 1.73 HMM library and genome assignments server


Ribonuclease H-like superfamily

SCOP classification
Root:   SCOP hierarchy in SUPERFAMILY [ 0] (11)
Class:   Alpha and beta proteins (a/b) [ 51349] (141)
  Mainly parallel beta sheets (beta-alpha-beta units)
Fold:   Ribonuclease H-like motif [ 53066] (7)
  3 layers: a/b/a; mixed beta-sheet of 5 strands, order 32145; strand 2 is antiparallel to the rest
Superfamily:   Ribonuclease H-like [ 53098] (12)
Families:   Ribonuclease H [ 53099] (4)
  Retroviral integrase, catalytic domain [ 53107]
  mu transposase, core domain [ 53112]
  Transposase inhibitor (Tn5 transposase) [ 53115]
  DnaQ-like 3'-5' exonuclease [ 53118] (14)
  contains Pfam 00929
  RuvC resolvase [ 53134]
  Mitochondrial resolvase ydc2 catalytic domain [ 69533]
  Putative Holliday junction resolvase RuvX [ 102485] (3)
  CAF1-like ribonuclease [ 102492]
  PIWI domain [ 110640] (3)
  Pfam 02171
  TM1739-like [ 142505]
  Pfam 04251; DUF430; particular similarity to the PIWI domain family
  Hermes transposase-like [ 142508]


Superfamily statistics
Genomes (1,235) UniProt 15.0 PDB chains (SCOP 1.73)
Domains 50,015 51,707 158
Proteins 48,770 48,285 158


Functional annotation
General category Metabolism
Detailed category Nucleotide metabolism and transport

Function annotation of SCOP domain superfamilies
InterPro annotation
Cross references IPR012337 SSF53098 Protein matches
Abstract

The catalytic domain of several polynucleotidyl transferases share a similar structure, consisting of a 3-layer alpha/beta/alpha fold that contains mixed beta 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-alpha subdomains), DnaQ-like 3¿-5¿ exonucleases (exonuclease domains), RuvC resolvase, and mitochondrial resolvase ydc2 (catalytic domain) [PubMed15299518, PubMed8696976, PubMed12823554].


InterPro database

PDBeMotif information about ligands, sequence and structure motifs
Cross references PDB entries
Ligand binding statistics
Nucleic-acid binding statistics
Occurrence of secondary structure elements
Occurrence of small 3D structural motifs

PDBeMotif resource

Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation ]

Internal database links

Browse genome assignments for this superfamily. The SUPERFAMILY hidden Markov model library has been used to carry out SCOP domain assignments to all genomes at the superfamily level.


Alignments of sequences to 53 models in this superfamily are available by clicking on the 'Alignments' icon above. PDB sequences less than 40% identical are shown by default, but any other sequence(s) may be aligned. Select PDB sequences, genome sequences, or paste in or upload your own sequences.


Browse and view proteins in genomes which have different domain combinations including a Ribonuclease H-like domain.


Examine the distribution of domain superfamilies, or families, across the major taxonomic kingdoms or genomes within a kingdom. This gives an immediate impression of how superfamilies, or families, are restricted to certain kingdoms of life.


Explore domain occurrence network where nodes represent genomes and edges are domain architectures (shared between genomes) containing the superfamily of interest.

There are 53 hidden Markov models representing the Ribonuclease H-like superfamily. Information on how the models are built, and plots showing hydrophobicity, match emmission probabilities and insertion/deletion probabilities can be inspected.


Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation · Internal database links ]