Construction and Expression of L-Arabinose Isomerase (L-AI) in Cell- Surface of Pichia pastoris

Yuliana, Agnes and Hariyatun, Hariyatun and Fuad, Asrul Muhammad and Suwanto, Antonius and Kusharyoto, Wien (2016) Construction and Expression of L-Arabinose Isomerase (L-AI) in Cell- Surface of Pichia pastoris. (International Journal on Advanced Science, Engineering and Information Technology, 6 (5). pp. 649-656. ISSN 2088-5334

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araA gene encode L-arabinose isomerase (L-AI). It is an enzyme converting D-galactose to D-tagatose. D-tagatose is is a hexoketose monosaccharide sweetener, which is an isomer of D-galactose and rarely found in nature. It is a potential sweetener which h as low calorie. The aim of this study is to construct araA gene in the expression vector pJ912-AGα and expression the protein in the cell-surface of Pichia pastoris GS115. Both vector pJ912-AGα and araA gene was digested with SalI and Kpn2I restriction enzymes then was ligated. The ligation solution had been successfully introduced into Escherichia coli DH5α. Vektor pJ912-AGα-araA was successfully integrated into the genome of P. pastoris GS115. Genetically stable transformed cells have been obtained after selection on zeocin medium up to 1000 μg/mL zeocin. We had successfully syntheized L-AI protein in the P. pastoris GS115. Observation using fluorescence microscopy has proven that successful transformaned cell emit green fluorescence derived from the interaction of functional His6 protein and rabbit polyclonal to 6×His tag ® and showed that L-AI protein was expressed successfully in cell-surface of P.pastoris.

Item Type: Article
Uncontrolled Keywords: araA, L-Arabinose isomerase, Yeast surface display, Pichia pastoris
Subjects: Q Science > Q Science (General)
R Medicine > RS Pharmacy and materia medica
Depositing User: Cambari
Date Deposited: 11 Sep 2020 02:41
Last Modified: 16 May 2024 07:14

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