A DNA polymerase from the archaeon Sulfolobus solfataricus shows sequence similarity to family B DNA polymerases.
Nucleic Acids Res
; 20(11): 2711-6, 1992 Jun 11.
Article
em En
| MEDLINE
| ID: mdl-1614858
The gene encoding the thermostable DNA polymerase from the archaeon Sulfolobus solfataricus (strain MT 4) was isolated by means of two degenerate oligonucleotide probes. They were designed on the basis of partial enzyme amino acid sequences. The gene was found to encode a 882 residues polypeptide chain with a deduced molecular mass of about 100 kDa. By comparison with other archaeal genes, putative regulatory sites were identified in the gene-flanking regions. By computer-assisted homology search, several sequence similarities among S. solfataricus and family B DNA polymerases were found. In addition, conserved sequence motifs, implicated in the 3'-5' exonuclease activity of E. coli DNA polymerase I and shared by various family A and B DNA polymerases, were also identified. This result suggests that the proofreading domains of all these enzymes are evolutionarily related.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sulfolobus
/
DNA Polimerase Dirigida por DNA
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Genes Bacterianos
Idioma:
En
Revista:
Nucleic Acids Res
Ano de publicação:
1992
Tipo de documento:
Article