Results 221 to 230 of about 11,395 (261)

Inhibition of the enzyme phosphoenolpyruvate-carboxylase (PEPC) by different pollutants

Talanta, 1997
The inhibitory effect of different pollutants on the enzyme phosphoenolpyruvate-carboxylase was investigated. For this enzyme, different procedures are described for determining the activity of the enzyme. Determination of the presence of the enzymatically-formed oxaloacetate was found to be more suitable for this purpose because of the higher ...
Kathrin Stein, Gerd Ohlenbusch
openaire   +3 more sources

The aminopeptidase C (PepC) from Lactobacillus helveticus CNRZ32. A comparative study of PepC from lactic acid bacteria

European Food Research and Technology, 2000
The aminopeptidase C (PepC) of Lactobacillus helveticus CNRZ32 was purified by anion exchange chromatography from cell free extracts of an E. coli DH5α clone overexpressing the Lactobacillus aminopeptidase. PepC was found to have a tetrameric structure in its native form with subunits of 50 kDa each, a pH optimum of 6.5 and maximum activity at 45 °C ...
Carmen Peláez, F.L. de Felipe, P.F. de Palencia, Teresa Requena   +3 more
openaire   +2 more sources

Optical and electrophysical properties of Ag–PEPC nanocomposites

Materials Science and Engineering: C, 2006
Absorption and luminescence spectra as well as the temperature dependences of electrical conductivity of polyepoxypropylcarbazole (PEPC) with Ag nanoparticles are studied. Polyepoxypropylcarbazole results in an additional stabilization of Ag nanoparticles. They cause essential PEPC photoluminescence quenching.
D. V. Ritchik, Anatoly I. Lesnikovich, É. É. Kolesnik, A. V. Kukhta, M. N. Nichick, S.A. Vorobyova   +5 more
openaire   +2 more sources

Regulation of pepc gene expression in Anabaena sp. PCC 7120 and its effects on cyclic electron flow around photosystem I and tolerances to environmental stresses.

Journal of Integrative Plant Biology, 2015
Since pepc gene encoding phosphoenolpyruvate carboxylase (PEPCase) has been cloned from Anabaena sp. PCC 7120 and other cyanobacteria, the effects of pepc gene expression on photosynthesis have not been reported yet. In this study, we constructed mutants
Xiaohui Jia, Peng-Peng Zhang, D. Shi, H. Mi, Jia-Cheng Zhu, Xi-Wen Huang, P. He   +6 more
semanticscholar   +1 more source

Catalytic properties of the cysteine aminopeptidase PepC, a bacterial bleomycin hydrolase

Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1998
PepC is a cytoplasmic thiol aminopeptidase widely conserved among lactic acid bacteria. PepC from Lactococcus lactis shares 35-38% identity with aminopeptidases of eukaryotic origins: the yeast and mammalian bleomycin hydrolases (BLMase). In this work we investigated the hydrolytic activity of PepC towards various substrates: bleomycin A2, aminoacyl-p ...
Mistou, M.Y., Gripon, J.C.
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Role of PEPc Isoforms in Phosphate-Deficient Nodules

2008
In soils, the concentration of available P for plants is normally very low, because most of the P combines with iron, aluminium, and calcium to form relatively insoluble compounds (Aono et al., 2001). Phosphate (Pi) deficiency is thought to be one of the limiting factors for nitrogen fixation (Aono et al., 2001) due to the high energy requirement of ...
Kleinert A, Venter M, Kossmann J, Valentine AJ   +3 more
openaire   +2 more sources

Preliminary Study on the Physiological Characteristics of Transgenic Wheat with Maize C4-pepc Gene in Field Conditions

, 2014
To explore the physiological characteristics of the pepc gene in transgenic wheat (Triticum aestivum) plants, PEPC activities in various organs of T3 plants were analyzed at Feekes 6.0, Feekes 10.3 and Feekes 11.1, and compared to control, untransformed ...
L. Han, W. G. Xu, L. Hu, Y. Li, X. Qi, J. Zhang, H. F. Zhang, Y. X. Wang   +7 more
semanticscholar   +1 more source

Cu2O–PEPC Composite Based Pressure Transducer

Arabian Journal for Science and Engineering, 2012
In this study, Al/Cu2O–PEPC/Al pressure transducer was designed and fabricated by drop-casting the blend of Cu2O–PEPC microcomposite thin films of copper oxide (Cu2O) micropowder, (3 wt.%) and poly-N-epoxypropylcarbazole, PEPC, (2 wt.%) in benzol on Al substrates. The thicknesses of the Cu2O–PEPC films were in the range of 30–100 μm.
Muhammad Abid, Mian Usman Farooq, Adam Khan, Kh. S. Karimov, Muhammad Saleem, Z. M. Karieva   +5 more
openaire   +2 more sources

Regulatory Phosphorylation of Maize C4-Form PEP Carboxylase (PEPC): Antibody Detection System and Purification of PEPC-protein Kinase

1998
Activity of phosphoeno/pyruvate carboxylase (PEPC) for C4 photosynthesis is upregulated by light (reviewed in [1, 2]). The regulation is mediated by a specific protein kinase (PEPC-PK) that phosphorylates Ser near N-terminus (Ser-15 in the maize Ca-form PEPC). This phosphorylation is dependent on light intensity in Ca-plants [3].
K. Nakajima, J. Emura, K. Y. Kumagaye, Yoshihisa Ueno, Katsura Izui, Kaoru Inami, S. Hata, Tetsuo Shiba   +7 more
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On the mechanisms of photogeneration of charge carriers in PEPC-C60 composites

Physics of the Solid State, 2013
Photogeneration of electric charge carriers at high strengths of the external electric field and the temperature of transition to the viscous-flow state (T visc) of thin PEPC-C60 composite films obtained by casting from a toluene solution have been studied.
M. A. Zabolotny, A. P. Olasyuk, O. P. Dmitrenko, N. A. Davidenko, A. V. Demchenko, Yu. M. Barabash, N. P. Kulish, S. L. Studzinskii   +7 more
openaire   +2 more sources