High level expression of a recombinant acid phytase gene in Pichia pastoris.

  title={High level expression of a recombinant acid phytase gene in Pichia pastoris.},
  author={A-S Xiong and Q-H Yao and R-H Peng and P-L Han and Zhenjiang Cheng and Yixiao Li},
  journal={Journal of applied microbiology},
  volume={98 2},
AIMS To achieve high phytase yield with improved enzymatic activity in Pichia pastoris. METHODS AND RESULTS The 1347-bp phytase gene of Aspergillus niger SK-57 was synthesized using a successive polymerase chain reaction and was altered by deleting intronic sequences, optimizing codon usage and replacing its original signal sequence with a synthetic signal peptide (designated MF4I) that is a codon-modified Saccharomyces cerevisiae mating factor alpha-prepro-leader sequence. The gene… CONTINUE READING
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