Repeat-length-independent broad-spectrum shuffling, a novel method of generating a random chimera library in vivo

Koichi Mori, Takafumi Mukaihara, Yoshiko Uesugi, Masaki Iwabuchi, Tadashi Hatanaka

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

We describe a novel method of random chimeragenesis based on highly frequent deletion formation in the Escherichia coli ssb-3 strain and a deletion-directed chimera selection system that uses the rpsL+ gene as a reporter. It enables the selection of chimeras without target gene expression and can therefore be applied to cytotoxic targets. When this system was applied to phospholipase D genes from Streptomyces septatus TH-2 and Streptomyces halstedii subsp. scabies K6 (examples of cytotoxic targets), chimeragenesis occurred between short identical sequences at the corresponding position of the parental genes with large variations. Chimeragenesis was >1,000 times more frequent in the ssb-3 background than in the ssb + background. We called this system repeat-length-independent broad-spectrum shuffling. It enables the convenient chimeragenesis and functional study of chimeric proteins. In fact, we found two amino acid residues related to the thermostability of phospholipase D (Phe426 and Thr433) by comparing thermostability among the chimeric enzymes obtained.

Original languageEnglish
Pages (from-to)754-760
Number of pages7
JournalApplied and Environmental Microbiology
Volume71
Issue number2
DOIs
Publication statusPublished - Feb 2005

Fingerprint

chimera
Phospholipase D
chimerism
Streptomyces
Libraries
phospholipase D
thermal stability
Scabies
Streptomyces halstedii
Gene Order
gene
recombinant fusion proteins
Genes
scabies
genes
Escherichia coli
Gene Expression
Amino Acids
gene expression
Enzymes

ASJC Scopus subject areas

  • Environmental Science(all)
  • Biotechnology
  • Microbiology

Cite this

Repeat-length-independent broad-spectrum shuffling, a novel method of generating a random chimera library in vivo. / Mori, Koichi; Mukaihara, Takafumi; Uesugi, Yoshiko; Iwabuchi, Masaki; Hatanaka, Tadashi.

In: Applied and Environmental Microbiology, Vol. 71, No. 2, 02.2005, p. 754-760.

Research output: Contribution to journalArticle

Mori, Koichi ; Mukaihara, Takafumi ; Uesugi, Yoshiko ; Iwabuchi, Masaki ; Hatanaka, Tadashi. / Repeat-length-independent broad-spectrum shuffling, a novel method of generating a random chimera library in vivo. In: Applied and Environmental Microbiology. 2005 ; Vol. 71, No. 2. pp. 754-760.
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