Difference between revisions of "Part:BBa K3724013"

Latest revision as of 03:15, 22 October 2021

Riboflavin biosynthesis protein RibD

rib d encodes the riboflavin biosynthesis protein rib D which converts 2,5-diamino-6-(ribosylamino)-4(3h)-pyrimidinone 5'-phosphate into 5-amino-6-(ribosylamino)-2,4(1h,3h)-pyrimidinedione 5'-phosphate in the riboflavin biosynthesis pathway in Shewanella oneidensis MR-1. This gene makes up a component of the riboflavin synthesis gene cluster (BBa_K3724015).

Usage and Biology

Shewanella oneidensis MR-1 are gram-negative bacteria at the center of studies of microbial reduction due to their ability to transfer electrons extracellularly to reduce materials such as graphene oxide (GO) [1]. Such characteristics have made S. oneidensis MR-1 an organism of interest in microbial fuel cells for bioelectricity generation and potential applications in bioremediation [2]. Two extracellular electron transfer pathways have been identified in the reduction of GO by Shewanella oneidensis MR-1. These are indirect electron transfer, mediated by secreted electron shuttles, and direct extracellular electron transfer (DET) which involves direct contact with the extracellular material [3]. rib d encodes the riboflavin biosynthesis protein rib D which converts 2,5-diamino-6-(ribosylamino)-4(3h)-pyrimidinone 5'-phosphate into 5-amino-6-(ribosylamino)-2,4(1h,3h)-pyrimidinedione 5'-phosphate. This protein is essential for the production of riboflavin in the riboflavin biosynthesis pathway of S. oneidensis MR-1 . It has been proposed that flavins may act as electron shuttles in the reduction of extracellular material by S. oneidensis MR-1 [4]. Therefore, this gene was used in the construction of the riboflavin synthesis gene cluster (BBa_K3724015) to increase the production of riboflavin in S. oneidensis MR-1 for increased rate of reduction of graphene oxide.

Sequence and Features

References

[1] Wang, G.; Qian, F.; Saltikov, C. W.; Jiao, Y.; Li, Y. Microbial Reduction of Graphene Oxide by Shewanella. Nano Research 2011, 4, 563–570.
[2] Schwalb, C.; Chapman, S. K.; Reid, G. A. The Tetraheme Cytochrome Cyma Is Required for Anaerobic Respiration with Dimethyl Sulfoxide and Nitrite in Shewanella Oneidensis. Biochemistry 2003, 42, 9491–9497.
[3] Lin, T.; Ding, W.; Sun, L.; Wang, L.; Liu, C.-G.; Song, H. Engineered Shewanella Oneidensis-Reduced Graphene Oxide Biohybrid with Enhanced Biosynthesis and Transport of Flavins Enabled a Highest Bioelectricity Output in Microbial Fuel Cells.
[4] Kouzuma, A.; Kasai, T.; Hirose, A.; Watanabe, K. Catabolic and Regulatory Systems in Shewanella Oneidensis MR-1 Involved in Electricity Generation in Microbial Fuel Cells. Frontiers in Microbiology 2015, 6.