Part:BBa_K5115034

csoS operon

The csoS operon, originating from the Halothiobacillus neapolitanus, encodes a series of proteins essential for the assembly of α-carboxysomes, a type of microcompartment that facilitates the sequestration and concentration of enzymes involved in carbon fixation, particularly ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco)^[1]. In literature, α-carboxysomes have been extensively studied and successfully utilized in Escherichia coli for enhancing carbon fixation efficiency and optimizing metabolic pathways. The csoS operon includes key structural proteins including csoS4B, csoS1C, csoS1A, csoS1B, csoS1D, csoS4A, and CsoS2, which play crucial roles in forming the shell and encapsulating cargo enzymes, including those required for hydrogen production. The operon serves as a model for synthetic biology applications, particularly in constructing nanoreactors capable of enhancing catalytic functions through encapsulation of heterologous enzymes. The successful expression of this operon in E. coli demonstrates its potential for industrial and biotechnological applications, enabling the creation of efficient microbial systems for sustainable bioprocessing.^[2]

Usage and Biology

In our experiment, we don't need to use the very original csoS operon. We choose to remove the csoS3 subunit from this operon. For more details about the part we eventually choose to adopt, please check BBa_K5115065(cso, without csoS3)

Characterization

Agarose gel electrophoresis

Figure 1. Agarose gel electrophoresis of PCR products, amplified from bacterial colonies/cultures.

M: DNA Marker; Lanes 1-8: Amplification of specific regions corresponding to csoS2, csoS3, csoS4A, csoS4B, csoS1C, csoS1A, csoS1B, and csoS1D, demonstrating the presence of the expected subunits derived from the α-carboxysome plasmid.

Sequence and Features

Assembly Compatibility:

10
COMPATIBLE WITH RFC[10]
12
INCOMPATIBLE WITH RFC[12]
Illegal NheI site found at 133
Illegal NotI site found at 6599
21
INCOMPATIBLE WITH RFC[21]
Illegal BglII site found at 291
23
COMPATIBLE WITH RFC[23]
25
INCOMPATIBLE WITH RFC[25]
Illegal NgoMIV site found at 2805
Illegal AgeI site found at 799
Illegal AgeI site found at 1750
Illegal AgeI site found at 2431
Illegal AgeI site found at 4933
1000
INCOMPATIBLE WITH RFC[1000]
Illegal SapI site found at 191

References

↑ Oltrogge, L. M., Chaijarasphong, T., Chen, A. W., Bolin, E. R., Marqusee, S., & Savage, D. F. (2020). Multivalent interactions between CsoS2 and Rubisco mediate α-carboxysome formation. Nature structural & molecular biology, 27(3), 281–287. https://doi.org/10.1038/s41594-020-0387-7.
↑ Li, T., Jiang, Q., Huang, J., Aitchison, C. M., Huang, F., Yang, M., Dykes, G. F., He, H. L., Wang, Q., Sprick, R. S., Cooper, A. I., & Liu, L. N. (2020). Reprogramming bacterial protein organelles as a nanoreactor for hydrogen production. Nature communications, 11(1), 5448. https://doi.org/10.1038/s41467-020-19280-0.

[1] Oltrogge, L. M., Chaijarasphong, T., Chen, A. W., Bolin, E. R., Marqusee, S., & Savage, D. F. (2020). Multivalent interactions between CsoS2 and Rubisco mediate α-carboxysome formation. Nature structural & molecular biology, 27(3), 281–287. https://doi.org/10.1038/s41594-020-0387-7.

[2] Li, T., Jiang, Q., Huang, J., Aitchison, C. M., Huang, F., Yang, M., Dykes, G. F., He, H. L., Wang, Q., Sprick, R. S., Cooper, A. I., & Liu, L. N. (2020). Reprogramming bacterial protein organelles as a nanoreactor for hydrogen production. Nature communications, 11(1), 5448. https://doi.org/10.1038/s41467-020-19280-0.

[1]

[2]