Inventors:
Yigal Koltin - Newton MA
Perry Riggle - Norwood MA
Vicky Gavrias - Watertown MA
Chris Bulawa - Arlington MA
Kenneth R. Winter - Seattle WA
Assignee:
Millennium Pharmaceuticals, Inc. - Cambridge MA
International Classification:
C12Q 168
C12N 114
C12N 1563
C07H 2104
Abstract:
A polynucleotide encoding chitin synthase (CHS1), an enzyme essential for cell wall synthesis and yeast cell growth, is provided. A maltose responsive promoter (MRP) isolated using the promoter library of the invention is also described. The present invention also provides a vector for isolation of a eukaryotic regulatory polynucleotide, i. e. , promoter. The vector is useful in the method of the invention which comprises identifying a eukaryotic regulatory polynucleotide, i. e. , promoter region, by complementing the growth of an auxotrophic host cell containing the vector of the invention, which includes a promoter region operably linked to a promoterless auxotrophic gene. The vector is introduced into the host cell chromosome by targeted integration. Also provided is a library containing host cells having the vector of the invention integrated in the chromosome of the host cell.