Written in English
|The Physical Object|
|Number of Pages||123|
The regulation of carbonic anhydrase and ribulose-1,5–bisphosphate carboxylase/oxygenase activase by light and CO 2 in Chlamydomonas reinhardtii. Plant Physiol. – Google ScholarCited by: Regulation of Periplasmic Carbonic Anhydrase Expression in Chlamydomonas reinhardtii by Acetate and pH' Janette P. Fett and John R. Coleman* Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S 3B2 The Cited by: TWCA1 is the major Zn-requiring isoform of carbonic anhydrase (CA) in the marine diatom Thalassiosira weissflogii. We have examined the roles that trace metals and CO2 play in the regulation of TWCA1 expression over ranges of concentrations that bracket those encountered in the marine environment. Both steady-state levels of TWCA1 and the kinetics of induction were measured . Abstract. Aquatic photosynthetic organisms, such as the green alga Chlamydomonas reinhardtii, respond to low CO 2 conditions by inducing a CO 2 concentrating mechanism (CCM). Carbonic anhydrases (CAs) are important components of the CCM. CAs are zinc-containing metalloenzymes that catalyze the reversible interconversion of CO 2 and HCO 3 −.In C. reinhardtii, there are at least 12 .
Fukuzawa H, Fujiwara S, Yamamoto Y, Dionisio-Sese ML and Miyachi S () cDNA cloning, sequence, and expression of carbonic anhydrase in Chlamydomonas reinhardtii: Regulation by environmental CO 2 concentration. Proc Natl Acad Sci USA – Google Scholar. Expression and regulation of carbonic anhydrases in the marine diatom Seppo Parkkila, An Update on the Metabolic Roles of Carbonic Anhydrases in the Model Alga Chlamydomonas reinhardtii, Metabolites Robert J. DiMario, Jing Yang, Bratati Mukherjee, The carbonic anhydrase isoforms of Chlamydomonas reinhardtii: intracellular. 1. Introduction – the CA catalyzed reaction. Carbonic anhydrase (CA) is an enzyme that catalyzes the interchange between CO 2 and HCO 3 − in solution as well as other reactions .While the CO 2 and HCO 3 − conversion does take place in the absence of CA, the interconversion is very slow. It is thought that CA is required to ensure a rapid supply of CO 2 and HCO 3 − for various. Regulation of Cell-Type-Specific Expression of β Carbonic Anhydrase in C 4 Plants Progress has been made in our understanding of cis elements and chromatin marks that control the preferential accumulation of transcripts encoding βCA in M cells of C 4 species; however, the associated trans -acting factors remain elusive.
The effects of mixotrophic growth with acetate and growth medium pH on expression of extracellular carbonic anhydrase (CA) in Chlamydomonas reinhardtii were evaluated. Addition of 10 mM acetate to the culture medium resulted in reduction of CA activity that was parallel to the reduction generated by growth of the algae in high external CO2 concentrations. Research Article GENE REGULATION AND MOLECULAR GENETICS Induction and Regulation of Expression of a Low-CO 2 -Induced Mitochondrial Carbonic Anhydrase in Chlamydomonas reinhardtii Mats Eriksson, Per Villand, Per Gardeström, Göran Samuelsson Published February The effect of external inorganic carbon concentration and light on carbonic anhydrase (CA) protein accumulation and steady-state mRNA levels were examined in Chlamydomonas reinhardtii. When photoautotrophically grown high-CO2 cells were transferred to low-CO2 conditions, they exhibited a significant accumulation of the kilobase CA transcript after 1 hour with the maximum level reached. Carbonic anhydrases catalyse the reversible hydration of CO 2, increasing the interconversion between COand HCO 3-+ H+ in living organisms. The three evolutionarily unrelated families of carbonic anhydrases are designated a-, b-and g-CA. Animals have only the a-carbonic anhy-drase type of carbonic anhydrase, but they contain multi-.