TRANSFORMATION OF PICHIA METHANOLICA

Methods for transforming Pichia methanolica, and DNA molecules useful in transformation of P. methanolica, are disclosed. P. methanolica cells are exposed, in the presence of DNA molecules, to a pulsed electric field having a field strength of from 2.5 to 4.5 kV/cm and a pulse duration of from 1 to...

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Bibliographic Details
Main Authors RAYMOND, CHRISTOPHER K, HOLDERMAN, SUSAN D, VANAJA, ERICA
Format Patent
LanguageEnglish
French
Published 16.09.2003
Edition6
Subjects
BEER
BIOCHEMISTRY
CHEMISTRY
COMPOSITIONS THEREOF
CULTURE MEDIA
ENZYMOLOGY
METALLURGY
MICROBIOLOGY
MICROORGANISMS OR ENZYMES
MUTATION OR GENETIC ENGINEERING
PROCESSES USING MICROORGANISMS
PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS
SPIRITS
VINEGAR
WINE
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Summary:Methods for transforming Pichia methanolica, and DNA molecules useful in transformation of P. methanolica, are disclosed. P. methanolica cells are exposed, in the presence of DNA molecules, to a pulsed electric field having a field strength of from 2.5 to 4.5 kV/cm and a pulse duration of from 1 to 40 milliseconds, whereby the DNA molecules are introduced into the cells. The D NA molecules may comprise an expression unit that includes a transcription promoter of a P. methanolica gene operably linked to a segment encoding a polypeptide or protein of interest. The DNA molecules may also encode a selectable marker, such as a P. methanolica ADE2 gene. Cells transformed according to the invention may be used in production systems for the preparation of proteins of commercial importance.
Bibliography:Application Number: CA19972261151