nicotiana mutabilis/protease

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An atypical aspartic protease modulates lateral root development in Arabidopsis thaliana.

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Few atypical aspartic proteases (APs) present in plants have been functionally studied to date despite having been implicated in developmental processes and stress responses. Here we characterize a novel atypical AP that we name Atypical Aspartic Protease in Roots 1 (ASPR1), denoting its expression

Point mutations in helper component protease of clover yellow vein virus are associated with the attenuation of RNA-silencing suppression activity and symptom expression in broad bean.

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Helper component protease (HC-Pro) is a potyvirus-encoded multifunctional protein and a major determinant of symptom expression in a susceptible plant. Here, we show the involvement of clover yellow vein virus (ClYVV) HC-Pro in necrotic symptom expression in broad bean (Vicia faba cv. Wase). In this

Plants transformed with a cistron of a potato virus Y protease (NIa) are resistant to virus infection.

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An oligonucleotide carrying signals for translation initiation in plants was engineered upstream to a cDNA clone containing nucleotides 5812-7260 of the potato virus Y (PVY) genome. This fragment contains all but the first 100 5' terminal bases of the cistron encoding one of the PVY proteases (NIa)

The asparagine residue in the FRNK box of potyviral helper-component protease is critical for its small RNA binding and subcellular localization.

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The multifunctional potyviral helper-component protease (HcPro) contains variable regions with some functionally conserved domains, such as the FRNK box. Natural variants occur at the FRNK box, a conserved central domain, known for its role in RNA binding and RNAi suppression activities, although no

Expression, purification, and characterization of the Necator americanus aspartic protease-1 (Na-APR-1 (M74)) antigen, a component of the bivalent human hookworm vaccine.

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Over 400 million people living in the world's poorest developing nations are infected with hookworms, mostly of the genus Necator americanus. A bivalent human hookworm vaccine composed of the Necator americanus Glutathione S-Transferase-1 (Na-GST-1) and the Necator americanus Aspartic Protease-1

Expression of four S. pneumoniae type 2 polysaccharide biosynthetic enzymes utilising the endogenous Kex2 protease activity in tobacco.

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In order to express multisubunit proteins, or to manipulate metabolic pathways in plants it is essential to be able to efficiently express multiple proteins within the same plant cell. To increase the efficiency of multi-protein expression, we demonstrate the use of the Golgi localized Kex2 protease

Activation of caspase-like proteases and induction of apoptosis by isopentenyladenosine in tobacco BY-2 cells.

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The effects of isopentenyladenosine (iPA) on tobacco (Nicotiana tabacum L.) BY-2 cells were examined. The number of BY-2 cells decreased in a time- and concentration-dependent manner after being exposed to micromolar concentrations of iPA. This decrease was mainly due to a loss of cell viability,

Inhibition of protease activity by antisense RNA improves recombinant protein production in Nicotiana tabacum cv. Bright Yellow 2 (BY-2) suspension cells.

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Recombinant proteins produced in plant suspension cultures are often degraded by endogenous plant proteases when secreted into the medium, resulting in low yields. To generate protease-deficient tobacco BY-2 cell lines and to retrieve the sequence information, we cloned four different protease cDNAs

Activity-based proteomics reveals nine target proteases for the recombinant protein-stabilizing inhibitor SlCYS8 in Nicotiana benthamiana.

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Co-expression of protease inhibitors like the tomato cystatin SlCYS8 is useful to increase recombinant protein production in plants, but key proteases involved in protein proteolysis are still unknown. Here, we performed activity-based protein profiling to identify proteases that are inhibited by

Inhibition of Naja nigricolis (Reinhardt) venom protease activity by Luffa egyptiaca (Mill) and Nicotiana rustica (Linn) extracts.

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Luffa egyptiaca and Nicotiana rustica are used in traditional medicine to treat snakebites and were evaluated for inhibitory activities on Naja nigricolis venom protease. The aqueous and ethanolic extracts of L. egyptiaca significantly reduced the maximum velocity (Vmax) and the computed index of

Heterologous expression and functional characterization of phytaspase, a caspase-like plant protease.

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Following the cloning and expression of tobacco (Nicotiana tabacum) phytaspase gene in Escherichia coli BL21, the recombinant protease was purified by affinity chromatography for further characterization. Circular dichroism (CD) spectroscopy and in silico analysis revealed structural similarities of

Citrus Psorosis Virus Movement Protein Contains an Aspartic Protease Required for Autocleavage and the Formation of Tubule-Like Structures at Plasmodesmata.

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Plant virus cell-to-cell movement is an essential step in viral infections. This process is facilitated by specific virus-encoded movement proteins (MPs), which manipulate the cell wall channels between neighboring cells known as plasmodesmata (PD). Citrus psorosis virus (CPsV) infection in sweet

The Arabidopsis AtSTE24 is a CAAX protease with broad substrate specificity.

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Following prenylation, the proteins are subject to two prenyl-dependent modifications at their C-terminal end, which are required for their subcellular targeting. First, the three C-terminal residues of the CAAX box prenylation signaling motif are removed, which is followed by methylation of the

The plant defense and pathogen counterdefense mediated by Hevea brasiliensis serine protease HbSPA and Phytophthora palmivora extracellular protease inhibitor PpEPI10.

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Rubber tree (Hevea brasiliensis Muell. Arg) is an important economic crop in Thailand. Leaf fall and black stripe diseases caused by the aggressive oomycete pathogen Phytophthora palmivora, cause deleterious damage on rubber tree growth leading to decrease of latex production. To gain insights into

A tandem Kunitz protease inhibitor (KPI106)-serine carboxypeptidase (SCP1) controls mycorrhiza establishment and arbuscule development in Medicago truncatula.

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Plant proteases and protease inhibitors are involved in plant developmental processes including those involving interactions with microbes. Here we show that a tandem between a Kunitz protease inhibitor (KPI106) and a serine carboxypeptidase (SCP1) controls arbuscular mycorrhiza development in the

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