Cloning, expression, purification, and crystallisation of HIV-2 reverse transcriptase.
Protein Expr Purif
; 27(1): 12-8, 2003 Jan.
Article
en En
| MEDLINE
| ID: mdl-12509979
ABSTRACT
A purification procedure is described for the isolation of recombinant HIV-2 reverse transcriptase expressed in Escherichia coli. The p68 subunit is expressed, in the absence of induction, and use of a heparin-Sepharose column produces substantially pure protein. Concentration of the homodimeric p68 reverse transcriptase pool, followed by incubation at room temperature for several days, results in full conversion by E. coli proteases to the heterodimer (p68/p55). This extended incubation simplifies the purification process and improves the yield of heterodimeric reverse transcriptase, which shows a truncation of the smaller subunit to 427 residues. The protein is then purified further by hydroxyapatite and gel-filtration chromatography to homogeneity. The HIV-2 RT is active and has been used to produce crystals that diffract to beyond 3.0 A.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Expresión Génica
/
VIH-1
/
ADN Polimerasa Dirigida por ARN
Idioma:
En
Revista:
Protein Expr Purif
Asunto de la revista:
BIOLOGIA MOLECULAR
Año:
2003
Tipo del documento:
Article
País de afiliación:
Reino Unido