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DNA polymerase III psi subunit superfamily
SCOP classification
Superfamily statistics
Functional annotation
| General category | Information |
| Detailed category | DNA replication/repair |
Function annotation of SCOP domain superfamilies
InterPro annotation
| Cross references | IPR004615 SSF102220 Protein matches |
| Abstract | DNA-directed DNA polymerase catalyzes DNA-template-directed extension of the 3'-end of an RNA strand by one nucleotide at a time. DNA polymerase III is a complex, multichain enzyme responsible for most of the replicative synthesis in bacteria. The enzyme also has 3' to 5' exonuclease activity. It has a core composed of alpha, epsilon and theta chains, that associate with a tau subunit which allows the core dimerization to form the PolIII' complex. PolIII' associates with the gamma complex (gamma, delta, delta', psi and chi chains) and with the beta chain. This family is the psi subunit, the small subunit of the DNA polymerase III holoenzyme in Escherichia coli and related species, whose exact function is not known. It appears to have a narrow taxonomic distribution, being restricted to the gammaproteobacteria. |
InterPro database
PDBeMotif information about ligands, sequence and structure motifs
PDBeMotif resource
Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation ]
Internal database links
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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.
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Alignments of sequences to 1 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.
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Browse and view proteins in genomes which have
different domain combinations including a DNA polymerase III psi subunit domain.
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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.
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Explore domain occurrence network where nodes represent genomes and edges are domain architectures (shared between genomes) containing the superfamily of interest.
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There are 1 hidden Markov models representing the DNA polymerase III psi subunit superfamily. Information on how the models are built, and plots showing hydrophobicity, match emmission probabilities and insertion/deletion probabilities can be inspected.
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Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation · Internal database links ]
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