Journal Article

Complete set of ORF clones of <i>Escherichia coli</i> ASKA library (<i>A</i> Complete <i>S</i>et of <i>E. coli K</i>-12 ORF <i>A</i>rchive): Unique Resources for Biological Research

Masanari Kitagawa, Takeshi Ara, Mohammad Arifuzzaman, Tomoko Ioka-Nakamichi, Eiji Inamoto, Hiromi Toyonaga and Hirotada Mori

in DNA Research

Published on behalf of Kazusa DNA Research Institute

Volume 12, issue 5, pages 291-299
Published in print January 2006 | ISSN: 1340-2838
Published online January 2005 | e-ISSN: 1756-1663 | DOI:

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Based on the genomic sequence data of Escherichia coli K-12 strain, we have constructed a complete set of cloned individual genes encoding Histidine-tagged proteins with or without GFP fused for functional genomic analysis. Each clone encodes a protein of predicted ORF attached by Histidines and seven spacer amino acids at the N-terminal end, and five spacer amino acids and GFP at the C-terminal end. SfiI restriction sites are generated at both the N- and C-terminal boundaries of ORF upon cloning, which enables easy transfer of ORF to other vector systems by cutting with SfiI. Expression of cloned ORF is under the control of an IPTG-inducible promoter, which is strictly repressed by lacIq repressor gene product. The set of cloned ORFs described here should provide unique resources for systematic functional genomic approaches including (i) construction of DNA microarray, (ii) production and purification of proteins, (iii) analysis of protein localization by monitoring GFP fluorescence and (iv) analysis of protein–protein interaction.

Keywords: Escherichia coli; bacterial functional genomics; ORF clone; resource

Journal Article.  4433 words.  Illustrated.

Subjects: Genetics and Genomics

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