New insight into the method of posttransformational vector amplification (PTVA) in Pichia pastoris.

J Microbiol Methods

Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China. Electronic address:

Published: May 2018

Posttransformational vector amplification (PTVA) is widely used to enrich the gene-copy number in Pichia pastoris. We engineered two test strains for PTVA studies and demonstrate that the PTVA process results in the amplification of a fragment with the resistant gene flanked by two homologous arms instead of the entire vector.

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http://dx.doi.org/10.1016/j.mimet.2018.04.013DOI Listing

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