The Main Structural and Functional Characteristics of Photosystem-II-Enriched Membranes Isolated from Wild Type and Mutant .

Photosystem II (PSII)-enriched membranes retain the original PSII architecture in contrast to PSII cores or PSII supercomplexes, which are usually isolated from . Here, we present data that fully characterize the structural and functional properties of PSII complexes in isolated PSII-enriched membranes from . The preparations were isolated from wild-type (WT) and CAH3-deficient mutant as the influence of CAH3 on the PSII function was previously proposed.

Carbonic anhydrase CAH3 supports the activity of photosystem II under increased pH.

The lumenal carbonic anhydrase (CA) CAH3 from green alga Chlamydomonas reinhardtii is the only one CA identified so far in close association with the photosystem II (PSII) multi-subunit protein complex. It was proposed earlier, that CAH3 could facilitate the H removal from the active center of the PSII water-oxidizing complex (WOC) under the light, thereby increasing its activity. In the present work, using PSII enriched membranes from the wild type of C.

Is carbonic anhydrase activity of photosystem II required for its maximum electron transport rate?

It is known, that the multi-subunit complex of photosystem II (PSII) and some of its single proteins exhibit carbonic anhydrase activity. Previously, we have shown that PSII depletion of HCO/CO as well as the suppression of carbonic anhydrase activity of PSII by a known inhibitor of α‑carbonic anhydrases, acetazolamide (AZM), was accompanied by a decrease of electron transport rate on the PSII donor side. It was concluded that carbonic anhydrase activity was required for maximum photosynthetic activity of PSII but it was not excluded that AZM may have two independent mechanisms of action on PSII: specific and nonspecific.

Evaluation of new Cu(II) complexes as a novel class of inhibitors against plant carbonic anhydrase, glutathione reductase, and photosynthetic activity in photosystem II.

Increasing inefficiency of production of important agricultural plants raises one of the biggest problems in the modern world. Herbicide application is still the best method of weed management. Traditional herbicides blocking only one of the plant metabolic pathways is ineffective due to the rapid growth of herbicide-resistant weeds.

[Barotherapy in the military medicine].

Barotherapy in the military medicine. The authors present current data on place and role of hyperbaric oxygenation for military and extreme medicine. Main mechanisms of oxygen saturation and its <> to cells and tissues of the organisms is described in the given article.