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https://www.readbyqxmd.com/read/25846189/the-coupling-of-glycolysis-and-the-rubisco-based-pathway-through-the-non-oxidative-pentose-phosphate-pathway-to-achieve-low-carbon-dioxide-emission-fermentation
#1
Ya-Han Li, Fan-Yu Ou-Yang, Cheng-Han Yang, Si-Yu Li
In this study, Rubisco-based engineered Escherichia coli, containing two heterologous enzymes of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) and phosphoribulokinase (PrkA), has been shown to be capable of the in situ recycling of carbon dioxide (CO2) during glycolysis. Two alternative approaches have been proposed to further enhance the carbon flow from glycolysis to a Rubisco-based pathway through the non-oxidative pentose phosphate pathway (NOPPP). The first is achieved by elevating the expression of transketolase I (TktA) and the second by blocking the native oxidation-decarboxylation reaction of E...
2015: Bioresource Technology
https://www.readbyqxmd.com/read/15876568/biosynthesis-of-ribose-5-phosphate-and-erythrose-4-phosphate-in-archaea-a-phylogenetic-analysis-of-archaeal-genomes
#2
Tim Soderberg
A phylogenetic analysis of the genes encoding enzymes in the pentose phosphate pathway (PPP), the ribulose monophosphate (RuMP) pathway, and the chorismate pathway of aromatic amino acid biosynthesis, employing data from 13 complete archaeal genomes, provides a potential explanation for the enigmatic phylogenetic patterns of the PPP genes in archaea. Genomic and biochemical evidence suggests that three archaeal species (Methanocaldococcus jannaschii, Thermoplasma acidophilum and Thermoplasma volcanium) produce ribose-5-phosphate via the nonoxidative PPP (NOPPP), whereas nine species apparently lack an NOPPP but may employ a reverse RuMP pathway for pentose synthesis...
May 2005: Archaea: An International Microbiological Journal
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