申请人:Filpula Ray David
公开号:US20080063632A1
公开(公告)日:2008-03-13
The invention provides a recombinant
Escherichia coli
host cell for producing an
Escherichia coli
-asparaginase II enzyme. The host cell includes an
Escherichia coli
chromosome and at least one copy of a recombinant extrachromosomal vector, wherein the recombinant extrachromosomal vector encodes the L-asparaginase II enzyme, wherein the host cell chromosome also encodes the same L-asparaginase II enzyme, and wherein the host chromosome does not encode any other isoform of L-asparaginase II.