Part:BBa_K4806001

CYP2D6 gene for Chlamydomonas reinhardtii (Phytobrick)

This basic part contains the coding sequence of CYP2D6 (B3-B4). This part is codon-optimized for Chlamydomonas reinhardtii and was built as part of the CYPurify Collection. In combination with a promoter like AβSAP(i) (BBa_K4806013) and a terminator like tRPL23 (BBa_K3002006), this level 0 part leads to expression and potential detoxification of specific chemicals (Ohkawa & Inui, 2015). To detect the target protein a tag like FLAG-tag (BBa_K4806012) is recommended.

Constructs

Fig.1 Construct design
We designed 5 level 2 parts containing CYP2D6 using the modular cloning system (MoClo).

Here are the links to the built constructs:

• 1. CYP2D6 gene with HA-tag for Chlamydomonas reinhardtii (Phytobrick) (BBa_K4806205)
• 2. CYP2D6 gene with mStop for Chlamydomonas reinhardtii (Phytobrick) (BBa_K4806207)
• 3. CYP2D6 gene with FLAG-tag for Chlamydomonas reinhardtii (Phytobrick) (BBa_K4806206)
• 4. CYP2D6 gene for expression in the chloroplast for Chlamydomonas reinhardtii (Phytobrick) (BBa_K4806208)
• 5. CYP2D6 tandem for expression together with the POR for Chlamydomonas reinhardtii (Phytobrick) (BBa_K4806215)

These constructs were transformed into Chlamydomonas reinhardtii. Besides the CYP2D6 coding sequence they contain an the paromomycin resistance cassette (BBa_K4806101), either the βSAP(i)-promotor (AβSAP(i) (BBa_K4806013) or the PSAD-promotor (BBa_K4806010), either the HA-tag (BBa_K3002017) or the FLAG-tag (BBa_K4806012) for detection and the tRPL23-terminator (BBa_K3002006). Additionally, one construct contains the CTPPSAD transit peptide to the chloroplast (BBa_K4806014)

Results

We detected the expression of CYP2D6 with FLAG-tag (BBa_K4806206) via immunoblotting.

Fig.2 Expression of CYP2D6 with FLAG-tag
(a)Level 2 MoClo construct for expression of the enzyme CYP2D6 containing the FLAG-tag was designed (see Fig.1 for part description)
(b) Picture of resulting western blot. The enzyme CYP2D6 is marked by a black arrow, the white arrow marks a cross reaction of antibodies. For reference, the UVM4 recipient strain and a strain expressing the FLAG-tagged VIPP1 were used as a negative and positive control, respectively.

For detection the UVM4 strain was transformed with the construct in (a). 30 paromomycin-resistant transformants were cultivated in TAP medium and samples were taken after 3 days. Whole-cell proteins were extracted and analyzed by SDS-PAGE and immunoblotting using an anti-FLAG antibody. The expression of CYP2D6 (~ 56 kDa) is visible.