chymotrypsin/mais

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Ribulose-1,5-bisphosphate carboxylase/oxygenase from Zea mays: amino-acid sequence of the small subunit.

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The amino-acid sequence of the small subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase from Zea mays has been determined by alignment of peptides generated by digestion with trypsin, chymotrypsin, staphylococcal protease and thermolysin. The protein-chemically determined structure is in

The extraction from maize (Zea mays) root cells of membrane-bound protein with Ca2+-dependent ATPase activity and its possible role in membrane fusion in vitro.

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Membrane fusion in vitro between Golgi apparatus- and plasma-membrane-rich fractions isolated from maize (Zea mays) roots was found to be dependent on Ca2+ and the membrane proteins. Trypsin treatment of mixed membrane fractions before the addition of Ca2+ inhibited their ability to fuse. It

[Systematically induced effects of Tetranychus cinnabarinus infestation on chemical defense in Zea mays inbred lines].

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In the present study, we investigated the systematically induced production of defense-related compounds, including DIMBOA, total phenol, trypsin inhibitors (TI) and chymotrypsin inhibitor (CI), by Tetranychus cinnabarinus infestation in Zea mays. The first leaves of two corn in-bred line seedlings,

Molecular cloning and characterization of six cDNAs expressed during glucose starvation in excised maize (Zea mays L.) root tips.

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In order to isolate glucose-starvation-related cDNAs in maize (Zea mays L.) root tips, a cDNA library was constructed with poly(A)+ mRNA from 24 h starved root tips. After differential screening of the library, we isolated six different cDNAs (named pZSS2 and pZSS7) which were expressed during

Partial purification of tightly bound mitochondrial hexokinase from maize (Zea mays L.) root membranes.

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In mammals, hexokinase (HK) is strategically located at the outer membrane of mitochondria bound to the porin protein. The mitochondrial HK is a crucial modulator of apoptosis and reactive oxygen species generation. In plants, these properties related to HK are unknown. In order to better understand

Accumulation of a maize proteinase inhibitor in response to wounding and insect feeding, and characterization of its activity toward digestive proteinases of Spodoptera littoralis larvae.

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The mpi gene encodes a maize proteinase inhibitor (MPI) protein whose mRNA accumulates in response to mechanical wounding. In this study, mpi gene expression in response to different types of damage was investigated. In mechanically damaged leaves of maize (Zea mays L.), mpi mRNA accumulation was

Decreased proteasome activity is associated with increased severity of liver pathology and oxidative stress in experimental alcoholic liver disease.

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BACKGROUND Because of its role in degrading the bulk of intracellular proteins and eliminating damaged proteins, the proteasome is important in maintaining cell viability. Previously, we showed a 35-40% decrease in proteasome peptidase activity when ethanol was administered to rats by intragastric

Characterization of a maize root proteinase.

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The major proteinase in maize (Zea mays) roots behaves as a serine endopeptidase. A possible physiological role of this enzyme could be in the turnover of nitrate reductase (NR) and, as such, it could be of great importance in regulating the assimilation of nitrate. The objective of this research

Effects of dietary pectin and fat on the small intestinal contents and exocrine pancreas of rats.

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The effects of dietary pectin and fat level on digestive enzyme activities in the pancreas and small intestine and on intestinal bile acid levels were investigated. In unfed rats, dietary pectin did not influence the pancreatic enzymes studied, but a higher level of corn oil in the diet lowered the

Isolation of a maize ZmCI-1B promoter and characterization of its activity in transgenic maize and tobacco.

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CONCLUSIONS The 2-kb ZmCI - 1B promoter is active in the root and embryo and induced by wounding in maize and the 220-bp 5'-deleted segment maybe the minimal promoter. The subtilisin-chymotrypsin inhibitor gene, CI-1B of Zea mays (ZmCI-1B), has been suggested to induce the maize defense system to

Changes in midgut endopeptidase activity of Spodoptera frugiperda (Lepidoptera: Noctuidae) are responsible for adaptation to soybean proteinase inhibitors.

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The development of transgenic maize plants expressing soybean proteinase inhibitors could reduce the economic damage of one of the major maize pests in Brazil, the fall armyworm, Spodoptera frugiperda (J.E. Smith, 1797). We examined the influence of soybean proteinase inhibitors on digestive enzyme

Changes in the expression and the enzymic properties of the 20S proteasome in sugar-starved maize roots. evidence for an in vivo oxidation of the proteasome.

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The 20S proteasome (multicatalytic proteinase) was purified from maize (Zea mays L. cv DEA 1992) roots through a five-step procedure. After biochemical characterization, it was shown to be similar to most eukaryotic proteasomes. We investigated the involvement of the 20S proteasome in the response

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