The Cryphonectria parasitica plasmid pUG1 contains a large ORF with motifs characteristic of family B DNA polymerases.
The isolation and characterization of the circular mitochondrial plasmid pUG1 from the ascomycete Cryphonectria parasitica is described. The entire sequence (4182 bp) was obtained and high similarities to DNA-dependent DNA polymerases were revealed. Strikingly 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, were found, suggesting the existence of a distinct group of members of the B DNA family polymerases. These strong similarities between the plasmids might suggest a common origin of the C.parasitica and the Neurospora plasmids.
Gobbi
E
E
Dipartimento di Biologia applicata alla Difesa delle Piante, Università di Udine, Via Scienze 208, Udine I-33100, Italy. micol@pldef.uniud.it
Carpanelli
A
A
Firrao
G
G
Locci
R
R
D000595:Amino Acid Sequence; D001203:Ascomycota / Q000235:genetics*; D004271:DNA, Fungal / Q000235:genetics*; D004272:DNA, Mitochondrial / Q000235:genetics*; D004259:DNA-Directed DNA Polymerase / Q000235:genetics*; D005656:Fungal Proteins / Q000235:genetics; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D016366:Open Reading Frames; D010957:Plasmids; D016415:Sequence Alignment; D012689:Sequence Homology, Nucleic Acid
D004271:DNA, Fungal; D004272:DNA, Mitochondrial; D005656:Fungal Proteins; D004259:DNA-Directed DNA Polymerase