Chlamydomonas reinhardtii CNX1E reconstitutes molybdenum cofactor biosynthesis in Escherichia coli mutants.

Eukaryot Cell

Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, Edificio Severo Ochoa, 14071 Córdoba, Spain.

Published: June 2007

We have isolated and characterized the Chlamydomonas reinhardtii genes for molybdenum cofactor biosynthesis, namely, CNX1G and CNX1E, and expressed them and their chimeric fusions in Chlamydomonas and Escherichia coli. In all cases, the wild-type phenotype was restored in individual mutants as well as in a CNX1G CNX1E double mutant. Therefore, CrCNX1E is the first eukaryotic protein able to complement an E. coli moeA mutant.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1951514PMC
http://dx.doi.org/10.1128/EC.00072-07DOI Listing

Publication Analysis

Top Keywords

chlamydomonas reinhardtii
8
molybdenum cofactor
8
cofactor biosynthesis
8
escherichia coli
8
cnx1g cnx1e
8
reinhardtii cnx1e
4
cnx1e reconstitutes
4
reconstitutes molybdenum
4
biosynthesis escherichia
4
coli mutants
4

Similar Publications

The green microalga Chlamydomonas reinhardtii is a promising host organism for the production of valuable compounds. Engineering the Chlamydomonas chloroplast genome offers several advantages over the nuclear genome, including targeted gene insertion, lack of silencing mechanisms, potentially higher protein production due to multiple genome copies and natural substrate abundance for metabolic engineering. Tuneable expression systems can be used to minimize competition between heterologous production and host cell viability.

View Article and Find Full Text PDF

Photoacclimation strategies of Chlamydomonas reinhardtii in response to high-light stress in stationary phase.

J Photochem Photobiol B

December 2024

Department of Biology, University of New Brunswick, Fredericton E3B5A3, NB, Canada. Electronic address:

Under ideal conditions, Chlamydomonas reinhardtii can photoacclimate to excess light through various short- and long-term mechanisms. However, how microalgae handle excess light stress once they exit exponential growth, and especially in stationary phase, is less understood. Our study explored C.

View Article and Find Full Text PDF

Diclofenac Degradation by Immobilized Chlamydomonas reinhardtii and Scenedesmus obliquus.

Microbiologyopen

December 2024

Department of Geological Sciences and Engineering, Queen's University, Kingston, Ontario, Canada.

Diclofenac (DCF), a commonly used anti-inflammatory medication, presents environmental concerns due to its presence in water bodies, resistance to conventional wastewater treatment methods, and detection at increasing concentrations (ng/L to µg/L) that highlight DCF as a global emerging pollutant. While microalgae have been effective in degrading DCF in wastewater, immobilization into a matrix offers a promising approach to enhance treatment retention and efficiency. This study aimed to evaluate the efficacy of DCF removal using immobilized freshwater microalgae.

View Article and Find Full Text PDF

Chlamydomonas reinhardtii, a model green alga for expressing foreign proteins, faces challenges in multigene expression and enhancing protein expression level in the chloroplast. To address these challenges, we compared heterologous promoters, terminators and intercistronic expression elements (IEEs). We transformed Chlamydomonas chloroplast with a biolistic approach to introduce vectors containing the NanoLuc expression unit regulated by Chlamydomonas or tobacco promoters and terminators.

View Article and Find Full Text PDF

Enhancing starch levels, granule size and phosphate content in Chlamydomonas reinhardtii through overexpression of ChlreSEX4.

Plant Sci

December 2024

Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Suipacha 570, Rosario, Santa Fe S2002LRK, Argentina; Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario, Santa Fe S2002LRK, Argentina. Electronic address:

Chlamydomonas reinhardtii is a green alga that has been widely used as a model organism for studying various cellular processes, including starch metabolism. In this alga, starch undergoes continuous phosphorylation during its synthesis and degradation. We recently identified and characterized ChlreSEX4 (starch excess 4), a glucan phosphatase from C.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!