Rubisco, Rubisco activase, and global climate change
نویسندگان
چکیده
منابع مشابه
Rubisco, Rubisco activase, and global climate change.
Global warming and the rise in atmospheric CO(2) will increase the operating temperature of leaves in coming decades, often well above the thermal optimum for photosynthesis. Presently, there is controversy over the limiting processes controlling photosynthesis at elevated temperature. Leading models propose that the reduction in photosynthesis at elevated temperature is a function of either de...
متن کاملPurification and species distribution of rubisco activase.
Ribulose-1,5-bisphosphate carboxylase/oxygenase (rubisco) activase, a soluble chloroplast protein which promotes light-dependent rubisco activation, was partially purified from spinach chloroplasts by ion-exchange and gel-filtration fast protein liquid chromatography. The protein could also be isolated using rate zonal centrifugation in sucrose gradients followed by conventional ion-exchange on...
متن کاملBiophysical characterization of higher plant Rubisco activase.
Rubisco activase (Rca) is a chaperone-like protein of the AAA+ family, which uses mechano-chemical energy derived from ATP hydrolysis to release tightly bound inhibitors from the active site of the primary carbon fixing enzyme ribulose 1,5-bisphosphate oxygenase/carboxylase (Rubisco). Mechanistic and structural investigations of Rca have been hampered by its exceptional thermolability, high deg...
متن کاملCoordinate Expression of Rubisco Activase and Rubisco during Barley Leaf Cell Development.
We have utilized the cellular differentiation gradient and photomorphogenic responses of the first leaf of 7-day-old barley (Hordeum vulgare L.) to examine the accumulation of mRNA and protein encoded by the ribulose-1,5-biphosphate carboxylase holoenzyme (rubisco) activase gene (rca). Previous studies have revealed a pattern of coordinate expression of rubisco subunit polypeptides during devel...
متن کاملTwo residues of rubisco activase involved in recognition of the Rubisco substrate.
Rubisco activase is an AAA(+) protein, a superfamily with members that use a "Sensor 2" domain for substrate recognition. To determine whether the analogous domain of activase is involved in recognition of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco, EC 4.1.1.39), two chimeric activases were constructed, interchanging a Sensor 2-containing region between activases from spinach and ...
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ژورنال
عنوان ژورنال: Journal of Experimental Botany
سال: 2008
ISSN: 1460-2431,0022-0957
DOI: 10.1093/jxb/ern053