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  • Erratum
  • Open Access

Erratum to: Gene cloning and characterization of a novel esterase from activated sludge metagenome

Microbial Cell Factories20109:25

  • Received: 16 April 2010
  • Accepted: 28 April 2010
  • Published:

The original article was published in Microbial Cell Factories 2009 8:67

This article [1] was submitted and published without the permission of all original authors. An amended author list has been provided in this correction article and the Authors' contributions and Competing interests section modified accordingly. Mr Tao Zhang apologies to the other authors for this oversight.

Additionally figure three in the original article was completed by another colleague, is of a different protein to that stated and was used without his permission. A correct figure completed by Mr Tao Zhang of the correct protein can be found in this correction article (Fig 1).
Figure 1
Figure 1

SDS-PAGE of overexpressed esterase EstAS in E. coli. Lane 1: molecular weight protein marker (Tiangen, Cat. No: MP102); lane 2, E. coli/pET28a: total protein extract, as negative control; lane 3: induced culture of E. coli/pET28a, as negative control; lane 4: total protein extract E. coli/pEstAS-His; lane 5, total protein extract, induced culture of E. coli/pEstAS-His; lane 6: purified EstAS (31 kDa).

Mr Tao Zhang's institution has investigated this incident of author misconduct.



Authors’ Affiliations

State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, PR, China
School of Life Sciences and Biotechnology, Mianyang Normal University, Mianyang, 621000, PR, China


  1. Zhang T, Han WJ, Liu ZP: Gene cloning and characterization of a novel esterase from activated sludge metagenome. Microb Cell Fact. 2009, 8: 67-10.1186/1475-2859-8-67.View ArticleGoogle Scholar


© Zhang and Han; licensee BioMed Central Ltd. 2010

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.