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  • Title: Cloning, expression and characterization of phenylalanine ammonia-lyase from Rhodotorula glutinis.
    Author: Zhu L, Cui W, Fang Y, Liu Y, Gao X, Zhou Z.
    Journal: Biotechnol Lett; 2013 May; 35(5):751-6. PubMed ID: 23338700.
    Abstract:
    The industrial-scale production of phenylalanine ammonia-lyase (PAL) mainly uses strains of Rhodotorula. However, the PAL gene from Rhodotorula has not been cloned. Here, the full-length gene of PAL from Rhodotorula glutinis was isolated. It was 2,121 bp, encoding a polypeptide with 706 amino acids and a calculated MW of 75.5 kDa. Though R. glutinis is an anamorph of Rhodosporium toruloides, the amino acid sequences of PALs them are not the same (about 74 % identity). PAL was expressed in E. coli and characterized. Its specific activity was 4.2 U mg(-1) and the k cat/K m was 1.9 × 10(4) mM(-1) s(-1), exhibiting the highest catalytic ability among the reported PALs. The genetic and biochemical information reported here should facilitate future application in industry.
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