Difference between revisions of "Part:BBa K2971002"

Revision as of 22:42, 21 October 2019

crtB from Deinococcus radiodurans

This part is the gene crtB (dr0862) from the extremophile Deinococcus radiodurans and encodes phytoene synthase (CrtB). Phytoene synthase catalyzes the first reaction in the biosynthetic pathway of carotenoids [1]. The sequence has been codon optimized for expression in Escherichia coli and iGEM registry compatibility.

The UiOslo 2019 team used this gene in a composite part (BBa_K2971004) to produce the red pigment lycopene, in Escherichia coli, by inserting it into a vector along with the genes crtE and crtI. This composite part produced red cells when expressed in Escherichia coli confirming that the part functions as intended.

The part was cloned into an expression vector under the arabionose inducible promotor araC. Successful cloning was confirmed with colony PCR of transformed colonies (figure 1). Colonies that carried the insert was sequenced to check for the potential presence of mutations or frame-shifts.

We expressed the protein in E. coli (DH5α)(figure 2). We detected a faint protein band during our SDS analysis; it is likely the expression was not well-optimized.

References

1. Liu, C., Sun, Z., Shen, S., Lin, L., Li, T., Tian, B., & Hua, Y. (2014). Identification and characterization of the geranylgeranyl diphosphate synthase in Deinococcus radiodurans. Letters in Applied Microbiology, 58(3), 219-224. doi:10.1111/lam.12181 Tian, B., & Hua, Y. (2010). Carotenoid biosynthesis in extremophilic Deinococcus–Thermus bacteria. Trends in Microbiology, 18(11), 512-520. doi:10.1016/j.tim.2010.07.007

Sequence and Features

Assembly Compatibility:

10
COMPATIBLE WITH RFC[10]
12
COMPATIBLE WITH RFC[12]
21
INCOMPATIBLE WITH RFC[21]
Illegal BglII site found at 609
23
COMPATIBLE WITH RFC[23]
25
COMPATIBLE WITH RFC[25]
1000
COMPATIBLE WITH RFC[1000]

@@ Line 8: / Line 8: @@
 registry compatibility.
-The UiOslo 2019 team used this gene in a composite part to produce the red pigment lycopene in
+The UiOslo 2019 team used this gene in a composite part (BBa_K2971004) to produce the red pigment lycopene, in
-Escherichia coli by expressing it in a vector along with the genes crtE and crtI.
+<i>Escherichia coli</i>, by inserting it into a vector along with the genes <i>crtE</i> and <i>crtI</i>. This composite part produced red cells when expressed in Escherichia coli confirming that the part functions as intended.
-We had the gene synthesized for free by IDT. The gene was cloned into an expression vector under the control of arabinose inducible promotor araC. The cloning was done via the gibson method. Successful insertion was confirmed with colony PCR of transformed colonies (figure 1), followed by sequencing to check for any potential mutation or frameshift.
+The part was cloned into an expression vector under the arabionose inducible promotor <i>araC</i>. Successful cloning was confirmed with colony PCR of transformed colonies (figure 1). Colonies that carried the insert was sequenced to check for the potential presence of mutations or frame-shifts.
+We expressed the protein in <i>E. coli</i> (DH5&#945;)(figure 2). We detected a faint protein band during our SDS analysis; it is likely the expression was not well-optimized.
 '''References'''
@@ Line 17: / Line 19: @@
 . Liu, C., Sun, Z., Shen, S., Lin, L., Li, T., Tian, B., & Hua, Y. (2014). Identification and characterization of the geranylgeranyl diphosphate synthase in Deinococcus radiodurans. Letters in Applied Microbiology, 58(3), 219-224. doi:10.1111/lam.12181
 Tian, B., & Hua, Y. (2010). Carotenoid biosynthesis in extremophilic Deinococcus&#x2013;Thermus bacteria. Trends in Microbiology, 18(11), 512-520. doi:10.1016/j.tim.2010.07.007