Article
The purB gene of Escherichia coli K-12 is located in an operon.
Microbiology (Reading, England) - 1 Nov 1996
Green S M, Malik T, Giles I G, Drabble W T
Abstract excerpt
The structural gene (purB) for succinyl-AMP (S-AMP) lyase and three additional ORFs are on the same DNA strand of the chromosome of Escherichia coli. Cassette mutagenesis and primer extension mapping demonstrated that purB is co-transcribed with an upstream gene (ORF23, or ycfC) encoding a 22.9 kDa membrane-associated protein of non-essential, but unknown, function unrelated to purine biosynthesis. The purB...
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