this possibility might be remote. We think that the rubiscolin sequence might have affinity for δ-receptor in animals just by chance. This might be the case for most plant-derived peptide sequences acting on animal receptors. In this sense, these bioactive peptides could be regarded as those...
i.e. carboxylation of rubp. it results in the formation of 2 molecules of 3-pga. rubisco also has an affinity for oxygen so it binds to some amount of o 2 in the process known as photorespiration. it leads to the conversion of rubp to one molecule each of phosphoglycerate and phosphogly...
Improvement of cyanobacterial RuBisCO by introducing the latch structure of red algal RuBisCO with high specificity for CO2 fixation. Ninomiya, N., Ashida, H., and Yokota, A.: Improvement of cyanobacterial RuBisCO by introducing the latch structure involved in high affinity for CO2 in red algal ...
Rubisco is not a perfect catalyst, suffering from low turnover rates, a low affinity for its CO(2) substrate, and a competitive inhibition by O(2) as an alternative substrate. As a consequence of changing environmental conditions over the past 3.5 billion years, with decreasing CO(2) and ...
Consequently, Rubisco has been studied intensively as a prime target for manipulations to €supercharge€ photosynthesis and improve both productivity and resource use efficiency. The catalytic properties of Rubiscos from diverse sources vary considerably, suggesting that changes in turnov...
a pseudo-icosahedral microcompartment responsible for carbon fixation. We have solved a high-resolution subtomogram average of the Rubisco cargo inside the carboxysome, and determined the arrangement of the enzyme. We find that theH. neapolitanusRubisco polymerizes in vivo, mediated by the small Rubi...
The synthetic inhibitory sugar phosphate CABP (2-carboxy-d-arabinitol-1,5-bisphosphate), which has a similar structure to RuBP and a high affinity to carbamylated Rubisco catalytic sites, was used as a reference for a strong inhibitor of Rubisco activity. The results show that only a few ...
Composite assay of more than 99% of single-amino acid mutants versus CO2concentration enabled inference of enzyme velocity and apparent CO2affinity parameters for thousands of substitutions. This approach identified many highly conserved positions that tolerate mutation and rare mutations that improve CO2...
Second, early RuBisCO began with a high Vc similar to extant bacterial Vc and subsequently evolved alternative tradeoffs between catalytic rate and substrate affinity. Our biochemical data support the former scenario, due to the position occupied by the ancestral RuBisCOs in a comparative plot of Vc...
affinitybut arelativelylowrate of turnover 2 . Inplants, Rubisco is a L8S8hexadecamer consisting of eight small subunits (SSU) andeight large subunits (LSU). Althoughthe SSUgenes are locatedinthe nucleus, the LSU is encoded by the chloroplast genome, which has complicated ...