Search results for "BISC"
showing 10 items of 74 documents
The combined effects of CO2, ozone and drought on rubisco and nitrogen metabolism of young oak trees (Quercus petraea) A phytotron study
1998
Abstract In this phytotron experiment we investigated the influence of increased CO 2 , O 3 and drought on the content of soluble proteins and some enzymes of carbon and nitrogen metabolism. We found that the amounts of soluble proteins and the large subunit of the rubisco per fresh weight in young oak leaves declined under conditions of increasing levels of CO 2 and after temporary water stress. The activities of nitrite reductase and glutamine synthetase were reduced when O 3 and CO 2 levels were raised.
Evidence for the Existence of a Pseudogene for the Large Subunit of Rubisco within the Chloroplast DNA of Norway Spruce (Picea Abies)
1998
Many hundreds of genes are involved in the synthesis, maintenance and degradation of chloroplasts. Although quite a number of these genes are located in the chloroplast genome, by far the greater proportion is present in the nuclear genome. The sizes of chloroplast DNAs (cpDNA) were estimated from restriction enzyme mapping studies and the complete sequences of different cpDNAs from diverse plant lineages have been determined to date (Marchantia polymorpha [1], Nicotiana tabacum [2], Oryza saliva [3], Epifagus virginiana [4], Euglena gracilis [5], Pinus thunbergii [6], Porphyra purpurea [7], Odontella sinensis [8], Zea mays [9], Chlorella vulgaris [10]).
Señor. Don Fortun Iñiguez de Acurio, y Don Juan Ignacio de Castaños ... Diputados del ... Señorìo de Vizcaya, puestos à los Reales pies de V.Ma…
1720
Sig. A8. - Pot tractarse de l'impr. descrit per Palau, 121019: Memorial al Rey en nombre del ... Señoria de Vizcaya, sobre que S.M. fue servido de resolver la mudanza general de Aduanas, que hasta aora se avian mantenido tierra adentro a los Puertos de Mar del Distrito del Señorio. - [S.l. : s.n., ca. 1720 Com a tít. el començament del text Reclams. - Cristus al començament del text
Taxonomic and nomenclatural novelties concerning the Valencian flora (eastern Spain)
2008
Como paso previo a la publicación de la cuarta edición del Manual para la determinación de la flora valenciana, que se encuentra en fase de edición, en la presente contribución se discute la identidad y valor taxonómico de algunas plantas iberolevantinas presentes en la Comunidad Valenciana. Como resultado se proponen cinco combinaciones nuevas, un nombre nuevo y se describen dos especies y una notospecie nuevas; asimismo se designan dos lectótipos. Para todas ellas se comentan aspectos nomenclaturales, taxonómicos, ecológicos y corológicos. Taxonomic and nomenclatural novelties concerning the Valencian flora (eastern Spain): Prior to publication of the fourth edition of Manual para la dete…
Synthesis of Lamellarin U and Lamellarin G Trimethyl Ether by Alkylation of a Deprotonated α-Aminonitrile
2008
1,2,3,4-Tetrahydroisoquinoline-1-carbonitriles can serve as starting materials for the one-pot synthesis of 5,6-dihydropyrrolo[2,1 a]isoquinolines and 1-benzyl-3,4-dihydroisoquinolines. The latter compounds were transformed to lamellarin G trimethyl ether and lamellarin U in short reaction sequences. This method allows the introduction of acid-sensitive protecting groups for the phenolic hydroxy functions which would be cleaved under the harsh conditions of the classical Bischler-Napieralski reaction.
Evaluation of biscuits obtained from novel composite flour containing Maiorca malt flour
2023
The aim of this study was to investigate a novel composite flour containing one of the old Sicilian wheat landraces called Maiorca and the resultant biscuits. In this study, the effect of replacing soft wheat flour with Maiorca malt flour and commercial malt flour at different percentages (5, 10, and 15%) on the color intensity, formation of acrylamide, and descriptive sensory analysis was evaluated. Sensory analysis revealed that the biscuit sample containing 5% Maiorca malt flour was most appreciated by panelists. Eventually, data analysis revealed that Maiorca malt flour had great potential to be used as a part of biscuit ingredients.
The effect of light intensities on the transcript level of proteins involved in photosynthesis in mustard plants
1996
Summary The influence of light quantity on the steady-state levels of plastid encoded transcripts was examined during the development of primary leaves from mustard ( Sinapis alba ) plants. RbcL mRNA, petA mRNA, and psbA mRNA, which encode the large subunit (LSU) of Rubisco, Cyt f of the Cyt b6/f complex, and D1 protein of PS II were investigated in leaves grown under high-light (HL) or low-light (LL) conditions. Additionally, the nuclear encoded 25 S rRNA was quantified. As a proportion of total RNA, the levels of 25 S rRNA, rbcL mRNA, petA mRNA, and psbA mRNA did not differ substantially in the HL versus LL plants. During leaf ontogenesis, though, the proportion of psbA mRNA in total RNA …
Ein Blick auf die ältesten Nachrichten der jetzigen Ostseeprovinzen Russlands bis zur Begründung des Deutschen Ritter-Ordens
1867
Autors grāmatā nav minēts. Īpašuma ieraksts: E.Krüger. cand.chem. October 1878.
Structural and functional consequences of the replacement of proximal residues Cys172 and Cys192 in the large subunit of ribulose-1,5-bisphosphate ca…
2008
Proximal Cys(172) and Cys(192) in the large subunit of the photosynthetic enzyme Rubisco (ribulose-1,5-bisphosphate carboxylase/oxygenase; EC 4.1.1.39) are evolutionarily conserved among cyanobacteria, algae and higher plants. Mutation of Cys(172) has been shown to affect the redox properties of Rubisco in vitro and to delay the degradation of the enzyme in vivo under stress conditions. Here, we report the effect of the replacement of Cys(172) and Cys(192) by serine on the catalytic properties, thermostability and three-dimensional structure of Chlamydomonas reinhardtii Rubisco. The most striking effect of the C172S substitution was an 11% increase in the specificity factor when compared wi…
C172S Substitution in the Chloroplast-encoded Large Subunit Affects Stability and Stress-induced Turnover of Ribulose-1,5-bisphosphate Carboxylase/Ox…
1999
Previous work has indicated that the turnover of chloroplast ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco; EC 4.1.1. 39) may be controlled by the redox state of certain cysteine residues. To test this hypothesis, directed mutagenesis and chloroplast transformation were employed to create a C172S substitution in the Rubisco large subunit of the green alga Chlamydomonas reinhardtii. The C172S mutant strain was not substantially different from the wild type with respect to growth rate, and the purified mutant enzyme had a normal circular dichroism spectrum. However, the mutant enzyme was inactivated faster than the wild-type enzyme at 40 and 50 degrees C. In contrast, C172S mutant …