Difference between revisions of "Part:BBa K5115034"
 
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<partinfo>BBa_K5115034 short</partinfo>
 
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<html><img style="float:right;width:128px" src="https://static.igem.wiki/teams/5115/czh/mineral-logo.svg" alt="contributed by Fudan iGEM 2023"></html>
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<html><img style="float:right;width:128px" src="https://static.igem.wiki/teams/5115/czh/mineral-logo.svg" alt="contributed by Fudan iGEM 2024"></html>
 
__TOC__
 
__TOC__
 
===Introduction===
 
===Introduction===
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The Ni-Fe hydrogenase we use is an enzyme that functions in vivo bidirectionally for NAD<sup>+</sup> reduction and NADH oxidation coupled to H<sub>2</sub> uptake and H<sub>2</sub> production, respectively. <ref>Teramoto, H., Shimizu, T., Suda, M., & Inui, M. (2022). Hydrogen production based on the heterologous expression of NAD+-reducing [NiFe]-hydrogenase from Cupriavidus necator in different genetic backgrounds of Escherichia coli strains. International Journal of Hydrogen Energy, 47(52), 22010–22021. </ref> In our design, the Ni-Fe hydrogenase works mainly to restore the nickel to a zero valence, which can help reduce nickel toxicity and collect nickel particles.
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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)<ref>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.</ref>. 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 reactors 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<ref>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.</ref>.
  
 
===Usage and Biology===
 
===Usage and Biology===
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The Ni-Fe hydrogenase is made up of six major and three auxiliary subunits. The former includes hoxF, hoxU, hoxY, hoxH, hoxW and hoxI, while the latter includes hypA, hypB and hypF.
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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 [https://parts.igem.org/Part:BBa_K5115065 BBa_K5115065(cso, without csoS3)]
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The hoxF and the hoxU form the module of NADH dehydrogenase. The hoxF is a hydrogenase subunit responsible for electron transport. The most important group in hoxF is FMN-b, which has the ability of switching electron. Under anaerobic conditions, NADH is oxidized to NAD<sup>+</sup> on the surface of hoxF subunit. In the meanwhile, the electrons generated in this reaction travel through a series of processes to the hoxH, completing the reduction of the hydrogen ion. Under aerobic conditions, NAD<sup>+</sup> is reduced to NADH on the surface of the hoxF subunit. The electron transferring is contrary to former. <ref>Löscher, S., Burgdorf, T., Zebger, I., Hildebrandt, P., Dau, H., Friedrich, B., & Haumann, M. (2006). Bias from H2 Cleavage to Production and Coordination Changes at the Ni−Fe Active Site in the NAD+-Reducing Hydrogenase from Ralstonia eutropha. Biochemistry, 45(38), 11658–11665.</ref> The hoxU houses a 2Fe-2S cluster and is responsible for the role of conducting electrons between hoxH and hoxF. <ref>Löscher, S., Burgdorf, T., Zebger, I., Hildebrandt, P., Dau, H., Friedrich, B., & Haumann, M. (2006). Bias from H2 Cleavage to Production and Coordination Changes at the Ni−Fe Active Site in the NAD+-Reducing Hydrogenase from Ralstonia eutropha. Biochemistry, 45(38), 11658–11665.</ref>
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The hoxY and the hoxH form the module of catalytic center.The hoxY houses a [4Fe-4S] cluster of the site, and an FMN group (FMN-a) near the Ni-Fe site in the hoxH. It is also responsible for the role of conducting electrons between hoxH and hoxF.<ref>Löscher, S., Burgdorf, T., Zebger, I., Hildebrandt, P., Dau, H., Friedrich, B., & Haumann, M. (2006). Bias from H2 Cleavage to Production and Coordination Changes at the Ni−Fe Active Site in the NAD+-Reducing Hydrogenase from Ralstonia eutropha. Biochemistry, 45(38), 11658–11665.</ref> The most important site in hoxH is the [NiFe] -hydrogenase active site, which is composed of Ni and Fe particles coordinated with cysteine residues, cyanide and carbon monoxide. <ref>Chan, K.-H., Lee, K.-M., & Wong, K.-B. (2012). Interaction between Hydrogenase Maturation Factors HypA and HypB Is Required for [NiFe]-Hydrogenase Maturation. PLOS ONE, 7(2), e32592.</ref> It is the most central component of our intracellular conversion of nickel ions. On its surface, oxidation and reduction of hydrogen gas happens alternately according to different oxygen status.
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The rest of the subunits may work together to ensure that the hydrogenase can assemble and function well. It's worth noting that hypA and hypB can cooperate to precisely guide and insert the nickel ions into the hydrogenase catalytic center.
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===Characterization===
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===Sequence and Features===
  
 
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Latest revision as of 10:15, 2 October 2024


csoS operon

contributed by Fudan iGEM 2024

Introduction

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 reactors 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)

Sequence and Features

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

  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.