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2 edition of Heterologous expression of a mutant ricin sequence found in the catalog.

Heterologous expression of a mutant ricin sequence

Margaret Mary Jones

Heterologous expression of a mutant ricin sequence

by Margaret Mary Jones

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  • 26 Currently reading

Published by typescript in [s.l.] .
Written in English


Edition Notes

Thesis (M.Sc.) - University of Warwick, 1991.

StatementMargaret Mary Jones.
ID Numbers
Open LibraryOL19578187M

Functional characterization of JrVTE1 by heterologous expression was carried out in E. coli BL21 (DE3) and microshoot lines of the fruit trees jujube (Zizyphus jujuba var. spinosa) and pear (Pyrus. Ribosome-inactivating proteins (RIPs) are protein toxins produced by organisms ranging from bacteria to plants which specifically damage eukaryotic and prokaryotic ribosomes, rendering them unable to bind elongation factors, and consequently interfering with the elongation steps in translation. RIPs from higher plants can be classified into two categories according to their structures, namely.

  In order to examine whether this point mutation affects the processing and transport of the VP-NP precursor, the normal (HV2) and mutant (MT6) vasopressin cDNAs were stably expressed in the mouse pituitary cell line AtT The normal precursor was correctly glycosylated and processed, and NP was detected in the culture medium. Sequence comparison suggested that the At-IE protein has an N-terminal extension of about 50 amino acids with the properties of a chloroplast transit peptide. We demonstrated through heterologous expression studies in E. coli that the functional domains for the PRA-CH (hisI) and PRA-PH (hisE) resided in the N-terminal and the C-terminal halves.

Some members of the Arabidopsis (Arabidopsis thaliana) CYP86A and CYP94B cytochrome P monooxygenase subfamilies, which share some sequence homology with the animal and fungal fatty acid hydroxylases, have been functionally defined as fatty acid ω -hydroxylases. With these activities, these and other fatty acid hydroxylases have potential roles in the synthesis of cutin, production of. Heterologous Expression systems are tools to find out whether a particular gene produces mRNA and/or protein and whether the protein produced is functional or defective.


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Heterologous expression of a mutant ricin sequence by Margaret Mary Jones Download PDF EPUB FB2

Sequencing and structural analysis. The full length of the wild-type V. affinisvenom hyaluronidasegene (VesA2) was determined with classical strategies, using mRNA from the venomgland as the template.

The full nucleotide sequence of VesA2 was bp inlength and had bp in the 3'untranslated region (3'UTR).Author: Prapenpuksiri Rungsa, Piyapon Janpan, Yutthakan Saengkun, Nisachon Jangpromma, Sompong Klaynongsruan.

The complete A gene cluster, comprising 29 open reading frames, was cloned and sequenced, and shown to possess a type II polyketide synthase (PKS) at its core.

Its identity was confirmed by analysis of a mutant generated by targeted disruption of a PKS gene, and by functional expression in a heterologous Streptomyces by: Before T.

reesei can be routinely used for heterologous protein production, it is necessary to gain insights into e.g. the influence of promoter sequences, effects of codon optimized synthetic genes, or expression rates of selected orthologous genes.

This type of analysis requires construction of large numbers of strains where the genes to be compared are expressed from a defined locus in isogenic Cited by: Heterologous Expression of a Mutant Gene of Termite Cellulase specificity of the mutant enzymes, except for CMC, the following substrates (obtained from Sigma, unle ss.

Here we show the heterologous expression, purification and characterization of XynA, an endoxylanase from a Cladosporium strain isolated from an Antarctic marine sponge. This enzyme is most active on xylans with high content of arabinose, and is the most thermolabile endoxylanase described so far in filamentous : Carlos Gil-Durán, María Cristina Ravanal, María Cristina Ravanal, Pamela Ubilla, Inmaculada Vaca, Re.

Reactive oxygen species (ROS) is an inherent consequence to all aerobically living organisms that might lead to the cells being lethal and susceptible to oxidative stress. Bacillus pumilus is characterized by high-resistance oxidative stress that stimulated our interest to investigate the heterologous expression and characterization of heme-catalase as potential biocatalyst.

Hi, I need a template Python script (or a complete script or perhaps just some advice) for conversion of a gene belonging to R. eutrophia for heterologous expression in C. acetobutylicum. Sequence comparison to ricin and RCA coding sequences in GenBank uncovered one full-length gene model (m) identical to the ricin coding sequence and another full-length gene model (m) showing 99% identity to RCA coding sequence.

These gene models likely correspond to the reported ricin and RCA sequences, respectively. Heterologous overexpression of functional membrane proteins is a major bottleneck of structural biology. Bacteriorhodopsin from Halobium salinarum (bR) is a striking example of the difficulties in membrane protein overexpression.

We suggest a general approach with a finite number of steps which allows one to localize the underlying problem of poor expression of a membrane protein using bR.

Yeast cells transformed with plasmids containing ricin B-chain coding sequences expressed this heterologous protein. When ricin B-chain was expressed in a form which resulted in its deposition in the yeast cytosol it formed insoluble aggregates which were devoid of galactose-binding activity.

Heterologous Expression Heterologous expression is the introduction of either complementary DNA (cDNA) or RNA (cRNA) encoding for a protein of interest from one species into the cell of another species, such that the hosts' cellular machinery expresses the foreign protein.

Heterologous Expression of the Nasturtium FAE in Yeast To study the function of the protein encoded by the nasturtium FAE, the coding region was linked to the Gal-inducible GAL1 promoter in the expression vector pYES/V5-His-TOPO and transformed into yeast cells: strain Inv Sci1 (Invitrogen) and two mutant strains elo 2Δ and elo 3Δ (Oh et.

Bitter, G. A., and Egan, K. M.,Expression of heterologous genes in Saccharomyces cerevisiae from vectors utilising the glyceraldehydephosphate dehydrogenase gene promoter, Gene – PubMed Google Scholar.

Heterologous expression of multiple P. luminescens Tc proteins and of Tc homologues suggests that three components are required to achieve full toxicity: a tcdA-like component, a tcdB-like.

Heterologous Protein Expression - Science topic Explore the latest questions and answers in Heterologous Protein Expression, and find Heterologous Protein Expression. These mutants often grow as well as wild-type yeast strains, and HETEROLOGOUS GENE EXPRESSION [21 ] all of the various vector and promoter systems that are presented here can easily be introduced and propagated in these mutant yeast backgrounds.

Enhanced heterologous gene expression in novel rpoH mutants of Escherichia coli. Ricin is highly toxic to animal cells, and to a lesser extent to plant cells.

Ricin A chain: Acts as a glycosidase that removes a specific adenine residue from an exposed loop of the 28S rRNA (A in mammals), leading to rRNA breakage. Heterologous Expression of THCA Synthase in Tobacco Hairy Roots—To obtain further evidence that THCAS encodes an active THCA synthase, heterologous expression of this gene was attempted.

We tried a heterologous plant expression to obtain the active recombinant enzyme because bacterial expression resulted in the accumulation of insoluble protein. TY - CHAP. T1 - Heterologous Expression of Proteins in Trichoderma. AU - Nevalainen, Helena. AU - Peterson, Robyn. PY - /2.

Y1 - /2. N2 - The main constituents for expressing heterologous gene products in Trichoderma reesei are the strong inducible cellobiohydrolase 1 (cbh1) promoter, high protein-secreting mutant strains and the heterologous protein typically fused to an endogenous. Lectins are proteins that have the ability to recognize and bind in a reversible and specific way to free carbohydrates or glycoconjugates of cell membranes.

For these reasons, they have been extensively used in a wide range of industrial and pharmacological applications.

Currently, there is great interest in their production on a large scale.Margaret Mary Jones has written: 'Heterologous expression of a mutant ricin sequence' Asked in Authors, Poets, and Playwrights What has the author Gary James Clements written?Huanglongbing (HLB), also known as citrus greening, is the most destructive disease of citrus worldwide.

HLB is associated with the non-culturable bacterium, Candidatus Liberibacter asiaticus (CaLas) in the United States. The virulence mechanism of CaLas is largely unknown, partly because of the lack of a mutant library. In this study, Tobacco mosaic virus (TMV) and Nicotiana benthamiana (N.