| Range |
~3 1/sec
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| Organism |
Unspecified |
| Reference |
Ma F, Jazmin LJ, Young JD, Allen DK. Isotopically nonstationary 13C flux analysis of changes in Arabidopsis thaliana leaf metabolism due to high light acclimation. Proc Natl Acad Sci U S A. 2014 Nov 25 111(47):16967-72. doi: 10.1073/pnas.1319485111. p.16967 left column bottom paragraphPubMed ID25368168
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| Primary Source |
[6] Sage RF (2002) Variation in the k(cat) of Rubisco in C(3) and C(4) plants and some implications for photosynthetic performance at high and low temperature. J Exp Bot 53(369):609–620PubMed ID11886880
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| Method |
Abstract: "[Investigators] performed in vivo isotopic labeling of Arabidopsis thaliana rosettes with (13)CO2 and estimated fluxes throughout leaf photosynthetic metabolism by INST-MFA [Isotopically nonstationary metabolic flux analysis]. Plants grown at 200 µmol m^(-2)s^(-1) light were compared with plants acclimated for 9 d at an irradiance of 500 µmol⋅m^(-2)⋅s^(-1)." |
| Comments |
P.16967 left column bottom paragraph: "For 95% of all terrestrial plants (i.e., C3 plants), the reductive pentose phosphate (Calvin–Benson–Bassham, or CBB) cycle directly links light and dark reactions and sustains anabolic activities (ref 5). RuBisCO (ribulose-1,5-bisphosphate carboxylase oxygenase) plays a central role in the cycle by carboxylating ribulose-1,5-bisphosphate (RUBP) with CO2 to form two 3-phosphoglycerate (3PGA) molecules. The other 10 enzymes in the CBB cycle regenerate the RUBP substrate to repeat this process. RuBisCO has a low turnover rate (∼3/s, primary source) and also performs a competitive oxygenation side reaction that limits carboxylation activity." |
| Entered by |
Uri M |
| ID |
113450 |