lectin/تبغ

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Recombinant jacalin-like plant lectins are produced at high levels in Nicotiana benthamiana and retain agglutination activity and sugar specificity.

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The plant kingdom is an underexplored source of valuable proteins which, like plant lectins, display unique interacting specificities. Furthermore, plant protein diversity remains under-exploited due to the low availability and heterogeneity of native sources. All these hurdles could be overcome

Comparison of microbial and transient expression (tobacco plants and plant-cell packs) for the production and purification of the anticancer mistletoe lectin viscumin.

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Cancer is the leading cause of death in industrialized countries. Cancer therapy often involves monoclonal antibodies or small-molecule drugs, but carbohydrate-binding lectins such as mistletoe (Viscum album) viscumin offer a potential alternative treatment strategy. Viscumin is toxic in mammalian

The tobacco lectin, prototype of the family of Nictaba-related proteins.

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In the last decade, a new class of low abundant plant l ectins was identified. These proteins are expressed after exposure of the plant to different stress factors and changing environmental conditions, and therefore are referred to as "inducible" lectins. Interestingly, these lectins accumulate in

Lectins as probes for the assay of rhabdovirus infections in plants.

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Thirteen different, biotinylated plant lectins were tested for their ability to recognize specifically the glycoproteins of the two different plant rhabdoviruses potato yellow dwarf virus and eggplant mottled dwarf virus. All viruses were propagated on the same plant host species, Nicotiana rustica

[Spatial distribution of lectin activity in perilesional areas of tobacco leaves inoculated with tobacco mosaic virus].

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The activities of lectins and peroxidase and lignin content were studied in the perilesional area of leaves in two tobacco species (Nicotiana tabacum L., cultivar Samsun NN, and N. glutinosa L.) inoculated with tobacco mosaic virus. The development of hypersensitivity response proved to be

Spodoptera littoralis-induced lectin expression in tobacco.

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The induced defense response in plants towards herbivores is mainly regulated by jasmonates and leads to the accumulation of so-called jasmonate-induced proteins. Recently, a jasmonate (JA) inducible lectin called Nicotiana tabacum agglutinin or NICTABA was discovered in tobacco (N. tabacum cv

HIV-1 neutralization profile and plant-based recombinant expression of actinohivin, an Env glycan-specific lectin devoid of T-cell mitogenic activity.

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The development of a topical microbicide blocking the sexual transmission of HIV-1 is urgently needed to control the global HIV/AIDS pandemic. The actinomycete-derived lectin actinohivin (AH) is highly specific to a cluster of high-mannose-type glycans uniquely found on the viral envelope (Env).

Role of propeptide glycan in post-translational processing and transport of barley lectin to vacuoles in transgenic tobacco.

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Mature barley lectin is a dimeric protein composed of two identical 18-kilodalton polypeptides. The subunits of barley lectin are initially synthesized as glycosylated proproteins, which are post-translationally processed to the mature protein preceding or concomitant with deposition of barley

Overexpression of Nictaba-Like Lectin Genes from Glycine max Confers Tolerance toward Pseudomonas syringae Infection, Aphid Infestation and Salt Stress in Transgenic Arabidopsis Plants.

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Plants have evolved a sophisticated immune system that allows them to recognize invading pathogens by specialized receptors. Carbohydrate-binding proteins or lectins are part of this immune system and especially the lectins that reside in the nucleocytoplasmic compartment are known to be implicated

An ultrastructural search for lectin-binding sites on surfaces of spinach leaf organelles.

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Organelles isolated from leaves of spinach (Spinacia oleracea L.) were prefixed in glutaraldehyde and then incubated with ferritin conjugates of four lectins - Concanavalin A (Con A), Ricinus communis L. agglutinin, MW 120,000 (RCA), soybean agglutinin (SBA), and wheat germ agglutinin (WGA) - in

Colocalization of barley lectin and sporamin in vacuoles of transgenic tobacco plants.

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Various targeting motifs have been identified for plant proteins delivered to the vacuole. For barley (Hordeum vulgare) lectin, a typical Gramineae lectin and defense-related protein, the vacuolar information is contained in a carboxyl-terminal propeptide. In contrast, the vacuolar targeting

Expression of garlic leaf lectin under the control of the phloem-specific promoter Asus1 from Arabidopsis thaliana protects tobacco plants against the tobacco aphid (Myzus nicotianae).

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BACKGROUND To check for correlation between the insecticidal properties and the specificity of lectins, a comparative study was made of the insecticidal activities of two garlic lectins with different biological activities. RESULTS The insecticidal activity of the garlic (Allium sativum L.) leaf

Cell-free expression and functionality analysis of the tobacco lectin.

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The Nicotiana tabacum lectin, called Nictaba, is a nucleocytoplasmic plant lectin expressed in tobacco leaves after exogenous application of specific jasmonates and upon insect herbivory. Since the lectin concentrations are rather low, huge amounts of plant material are needed to purify milligram

Expression of the nucleocytoplasmic tobacco lectin in the yeast Pichia pastoris.

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The Nicotiana tabacum lectin, also called Nictaba, is a nucleocytoplasmic plant lectin expressed in tobacco leaves after exposure to jasmonates. Purification of the lectin from raw material is a time-consuming process, demanding large amounts of induced plant material. In addition, the lectin yield

Characterization of the hypersensitive response-like cell death phenomenon induced by targeting antiviral lectin griffithsin to the secretory pathway.

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Griffithsin (GRFT) is an antiviral lectin, originally derived from a red alga, which is currently being investigated as a topical microbicide to prevent transmission of human immunodeficiency virus (HIV). Targeting GRFT to the apoplast for production in Nicotiana benthamiana resulted in necrotic

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