pfam14480: DNA_pol3_a_NI (This model is not part of the current CDD release)
DNA polymerase III polC-type N-terminus I
This is the first N-terminal domain, NI domain, of the DNA polymerase III polC subunit A that is found only in Firmicutes. DNA polymerase polC-type III enzyme functions as the 'replicase' in low G + C Gram-positive bacteria. Purine asymmetry is a characteristic of organisms with a heterodimeric DNA polymerase III alpha-subunit constituted by polC which probably plays a direct role in the maintenance of strand-biased gene distribution; since, among prokaryotic genomes, the distribution of genes on the leading and lagging strands of the replication fork is known to be biased. It has been predicted that the N-terminus of polC folds into two globular domains, NI and NII. A predicted patch of elecrostatic potential at the surface of this domain suggests a possible involvement in nucleic acid binding. This domain is associated with DNA_pol3_alpha pfam07733 and DNA_pol3_a_NI pfam11490.
Jiyao W et al.(2023). "The conserved domain database in 2023.",