The Cryphonectria parasitica plasmid pUG1 contains a large ORF with motifs characteristic of family B DNA polymerases.

摘要

The isolation and characterization of the circular mitochondrial plasmid pUG1 from C. parasitica is described. The entire sequence (4182 bp) was obtained, and high similarities to DNA-dependent DNA polymerases were identified. Common features with the DNA polymerases encoded by the Neurospora intermedia plasmids Fiji and LaBelle (such as matches to the conserved motifs A and B and the presence of TTD instead of DTD in motif C) occurred, suggesting the existence of a distinct group of members of theB DNA family polymerases. It is suggested that these similarities could be due to the C. parasitica and Neurospora plasmids sharing a common origin. The sequence data obtained have been submitted to the EMBL database under the accession number Y12637.