Part:BBa_K3771079
T7-JJU
Description
PT7-jju is a composite part consisting of the T7 promoter and the cs sequences. This part was used in in vivo testing of taurine production. The sequence for jju and T7 promoter were ligated and transformed into E. coli to calculate taurine production using high-performance liquid chromatography (HPLC).
Biology
T7 promoter constitutively facilitates the expression of JJU enzyme.
Usage
JJU enzyme was used in in vitro testing of taurine production. The sequence for JJU enzyme and trc promoter (BBa_K864400) were ligated and transformed into E. coli. By adding L-cysteine substrate into a reaction solution, JJU can help catalyze the conversion of L-cysteine to taurine. Taurine concentrations were determined using high-performance liquid chromatography (HPLC).
Characterization
Fig 1. Confirmation of jju fragment by PCR. M: Marker; Lane 1: jju (1180bp)
Fig 2. Confirmation of pET28a fragment by digestion. M: Marker; Lane 1: pET28a (~5280 bp)
Fig. 3 Transformation/JJU in DH5α
Fig. 4 Confirmation of pET28a-T7-JJU by digestion. M: Marker; Lane 1: Colony of pET28a-T7-JJU (~6466 bp)
Fig. 5 Transform into BL21(DE3)
Fig. 6 Confirmation of protein expression of JJU. M: Marker; Lane1: whole cell of JJU in BL21(DE3); Lane2: soluble protein of JJUBL21(DE3) (~43 kDa)
Fig. 7 Transform into BD7G
Fig. 8 Confirmation of protein expression of JJU. M: Marker; Lane1: whole cell of JJU in BD7G; Lane2: soluble protein of JJU in BD7G(~43 kDa)
References
BRENDA - Information on EC 4.4.1.10 - cysteine lyase. Brenda-enzymes.org. Published 2021. Accessed October 6, 2021. https://www.brenda-enzymes.org/enzyme.php?ecno=4.4.1.10
Sequence and Features
| None |