ISSN:
0749-503X
Keywords:
Pichia pastoris
;
expression vectors
;
gene regulation
;
Life and Medical Sciences
;
Genetics
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
Notes:
The budding yeast Pichia pastoris is an attractive system for exploring certain questions in cell biology, but experimental use of this organism has been limited by a lack of convenient expression vectors. Here we describe a set of compact vectors that should allow for the expression of a wide range of endogenous or foreign genes in P. pastoris. A gene of interest is inserted into a modified pUC19 polylinker; targeted integration into the genome then results in stable and uniform expression of this gene. The utility of these vectors was illustrated by expressing the bacterial β-glucuronidase (GUS) gene. Constitutive GUS expression was obtained with the strong GAP promoter or the moderate YPT1 promoter. The regulatable AOX1 promoter yielded very strong GUS expression in methanol-grown cells, negligible expression in glucose-grown cells, and intermediate expression in mannitol-grown cells. GenBank Accession Numbers are: pIB1, AF027958; pIB2, AF027959; pIB3, AF027960; pIB4, AF027961. © 1998 John Wiley & Sons, Ltd.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
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