Purification and properties of Aquifex aeolicus DNA polymerase expressed in Escherichia coli.
FEMS Microbiol Lett
; 201(1): 73-7, 2001 Jul 10.
Article
en En
| MEDLINE
| ID: mdl-11445170
The gene encoding Aquifex aeolicus (Aae) DNA polymerase was expressed under the control of the trp promoter on a high-copy plasmid, pTRPNS, in Escherichia coli. The expressed enzyme was purified 11-fold with a 13.8% yield and a specific activity of 2268.3 U mg(-1). The optimum pH of the enzyme was 6.8-7.2. The optimal concentrations of KCl and Mg(2+) were 20-30 mM and 4-5 mM, respectively. Aae DNA polymerase contained a double-strand-dependent 3'-->5' proofreading exonuclease activity but lacked any detectable 5'-->3' exonuclease activity.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Bacilos y Cocos Aerobios Gramnegativos
/
ADN Polimerasa Dirigida por ADN
/
Escherichia coli
Idioma:
En
Revista:
FEMS Microbiol Lett
Año:
2001
Tipo del documento:
Article
País de afiliación:
Corea del Sur
Pais de publicación:
Reino Unido