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Invertase secretion in Hansenula polymorpha under the AOX1 promoter from Pichia pastoris
Author(s) -
Rodriguez L.,
Narciandi R. E.,
Roca H.,
Cremata J.,
Montesinos R.,
Rodriguez E.,
Grillo J. M.,
Muzio V.,
Herrera L. S.,
Delgado J. M.
Publication year - 1996
Publication title -
yeast
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.923
H-Index - 102
eISSN - 1097-0061
pISSN - 0749-503X
DOI - 10.1002/(sici)1097-0061(199607)12:9<815::aid-yea916>3.0.co;2-h
Subject(s) - invertase , pichia pastoris , biology , saccharomyces cerevisiae , yeast , biochemistry , heterologous , alcohol oxidase , recombinant dna , pichia , microbiology and biotechnology , gene , enzyme
A DNA fragment containing a transcription regulating region of the alcohol oxidase ( AOX1 ) gene from the methylotrophic yeast Pichia pastoris was used in the construction of a vector for the expression of heterologous proteins in the methylotrophic yeast Hansenula polymorpha . We used this vector to clone the SUC2 gene from Saccharomyces cerevisiae into H. polymorpha yeast. The culture conditions for invertase production using a fed‐batch culture were studied. More than 1·5×10 3 U/ml of biologically active invertase (1 g/l) were secreted to the cellular periplasmic space. The fermentative process was scaled up to 50 l. Invertase produced from H. polymorpha was glycosylated, but it contained significantly less carbohydrate than protein produced by S. cerevisiae . Using the Western‐blot technique, it was observed that invertase secreted from H. polymorpha and invertase secreted from S. cerevisiae showed common antigenic determinants.