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Notice of Retraction
The Synthesis of Aspergillus Niger Lipase Gene and the Analysis of Its Translation Initiation Region for the Expression in Pichia pastoris

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10 Author(s)
Kehan Xu ; Hubei Key Lab. of Genetic Regul. & Integrative Biol., Central China Normal Univ., Wuhan, China ; Na Li ; Liling Yuan ; Yi Liu
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Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting

Aspergillus niger lipases are important biocatalysts widely used in industries for food processing and pharmaceutical preparation. High-level expression recombinants can lead to cost effective lipase large scale production. Total gene synthesis is an efficient method to enhance the expression level of the gene. According to the mature peptide sequence of A. niger lipase and codons of preference in Pichia pastoris, 26 primers with 20bp overlaps at both 57 and 37 ends between adjacent oligonucleotides were designed and synthesized. Fragments lipA1(300bp), lipA2(237bp), lipA3(234bp) and lipA4(210bp) were separately synthesized by assembly PCR, and then they were used as the template to get the full length gene. The synthetic gene was cloned into pPIC9K secretory expression vector. The expression efficiency was verified with analysis of mRNA secondary structure using RNA Structure 4.5.

Published in:

Bioinformatics and Biomedical Engineering, (iCBBE) 2011 5th International Conference on

Date of Conference:

10-12 May 2011

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