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Rational design and PCR-based synthesis of an artificial Schizophyllum commune xylanase gene.

ABSTRACT: A synthetic gene encoding the Schizophyllum commune xylanase XynA was constructed by a novel PCR-based procedure. Three long oligonucleotides were synthesized and used in combination with flanking PCR primers to generate a 607 base pair gene which contained 31 unique locations for restriction enzyme cleavage. The amino acid sequence was tailored for expression in Escherichia coli by using only those codons found in highly expressed E. coli genes. The availability of the gene will facilitate analysis of the structure and function of this and other beta-(1,4) xylanases.

SUBMITTER: Graham RW

PROVIDER: S-EPMC311407 | biostudies-other | 1993 Oct

REPOSITORIES: biostudies-other

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Rational design and PCR-based synthesis of an artificial Schizophyllum commune xylanase gene.

Graham R W RW Atkinson T T Kilburn D G DG Miller R C RC Warren R A RA

Nucleic acids research 19931001 21

A synthetic gene encoding the Schizophyllum commune xylanase XynA was constructed by a novel PCR-based procedure. Three long oligonucleotides were synthesized and used in combination with flanking PCR primers to generate a 607 base pair gene which contained 31 unique locations for restriction enzyme cleavage. The amino acid sequence was tailored for expression in Escherichia coli by using only those codons found in highly expressed E. coli genes. The availability of the gene will facilitate anal ...[more]

PMID: 8177740

Similar Datasets

Schizophyllum commune

Project description: Not available

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RNA-mediated gene silencing in monokaryons and dikaryons of Schizophyllum commune.

Project description:Disruption of genes by homologous recombination occurs at a low frequency in the basidiomycete Schizophyllum commune. For instance, the SC3 and SC15 genes were inactivated at frequencies of 1 and 5%, respectively. As an alternative to disruption, we used gene silencing through the introduction of a hairpin construct. The SC15 gene, which encodes an abundantly secreted structural protein, was silenced at a frequency of 80% in monokaryons of S. commune after introduction of a hairpin construct of the gene. Silencing also occurred in dikaryons in which one of the partners was not a silenced strain. The silencing mechanism resembles RNAi in other filamentous fungi and is a powerful tool for the functional analysis of genes expressed in monokaryons or dikaryons.

| S-EPMC1392905 | biostudies-literature

Allergic fungal sinusitis caused by Schizophyllum commune.

Project description:A case of allergic fungal sinusitis (AFS) due to Schizophyllum commune was reported. The pathogen was identified using molecular bioanalysis. The patient underwent the functional endoscopic sinus surgery followed by the radical maxillary sinusotomy with canine fossa trephine. This case suggested that complete surgery allowed optimal disease clearance for AFS caused by Schizophyllum commune.

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Fungemia associated with Schizophyllum commune in Brazil.

Project description: Not available

| S-EPMC5490937 | biostudies-literature

An efficient gene deletion procedure for the mushroom-forming basidiomycete Schizophyllum commune.

Project description:Gene deletion in Schizophyllum commune is hampered by a low incidence of homologous integration. As a consequence, extensive screening is required to identify a transformant with the desired genotype. To alleviate this and to facilitate the assembly of deletion plasmids, vector pDelcas was constructed. This construct has a set of restriction sites, which allows for directional cloning of the flanking sequences at both sides of a nourseothricin resistance cassette. Moreover, it contains a phleomycin resistance cassette elsewhere in the plasmid, which is used to screen for transformants with an ectopic integration of the pDelcas derivative. The use of pDelcas derivatives in combination with an improved PCR screening protocol permitted the efficient identification of S. commune deletion strains. This procedure may also function in other basidiomycetes. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s11274-010-0356-0) contains supplementary material, which is available to authorized users.

| S-EPMC2940052 | biostudies-literature

Rice straw fermentation by Schizophyllum commune ARC-11 to produce high level of xylanase for its application in pre-bleaching.

Project description:Rice straw is valuable resource that has been used as substrate for cost effective production of xylanase under solid-state fermentation by a newly isolated white rot fungi, S. commune ARC-11. Out of eleven carbon sources tested, rice straw was found most effective for the induction of xylanase that produced 4288.3?IU/gds of xylanase by S. commune ARC-11. Maximum xylanase production (6721.9?IU/gds) was observed on 8th day of incubation at temperature (30?°C), initial pH (7.0) and initial moisture content (70.0%). The supplementation of ammonium sulphate (0.08% N, as available nitrogen) enhanced the xylanase production up to 8591.4?IU/gds. The xylanase production by S. commune ARC-11 was further improved by the addition of 0.10%, (w/v) of Tween-20 as surfactant. The maximum xylanase activities were found at pH 5.0 and temperature 55?°C with a longer stability (180?min) at temperature 45, 50 and 55?°C. This xylanase preparation was also evaluated for the pre-bleaching of ethanol-soda pulp from Eulaliopsis binata. An enzyme dosage of 10?IU/g of xylanase resulted maximum decrease in kappa number (14.51%) with a maximum improvement 2.9% in ISO brightness compared to control.

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First report on Schizophyllum commune from a dog.

Project description:This report describes the first isolation of Schizophyllum commune from a granulomatous lesion on the neck of a dog. The biopsy specimen from the lesion disclosed granulomatous inflammation with branching fungal hyphae without clamp connections. The clinical isolate was identified as S. commune by mycological examination and analysis of ribosomal DNA sequences.

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Inositol Signaling in the Basidiomycete Fungus Schizophyllum commune.

Project description:Intracellular signaling is conserved in eukaryotes to allow for response to extracellular signals and to regulate development and cellular functions. In fungi, inositol phosphate signaling has been shown to be involved in growth, sexual reproduction, and metabolic adaptation. However, reports on mushroom-forming fungi are lacking so far. In Schizophyllum commune, an inositol monophosphatase has been found up-regulated during sexual development. The enzyme is crucial for inositol cycling, where it catalyzes the last step of inositol phosphate metabolism, restoring the inositol pool from the monophosphorylated inositol monophosphate. We overexpressed the gene in this model basidiomycete and verified its involvement in cell wall integrity and intracellular trafficking. Strong phenotypes in mushroom formation and cell metabolism were evidenced by proteome analyses. In addition, altered inositol signaling was shown to be involved in tolerance towards cesium and zinc, and increased metal tolerance towards cadmium, associated with induced expression of kinases and repression of phosphatases within the inositol cycle. The presence of the heavy metals Sr, Cs, Cd, and Zn lowered intracellular calcium levels. We could develop a model integrating inositol signaling in the known signal transduction pathways governed by Ras, G-protein coupled receptors, and cAMP, and elucidate their different roles in development.

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Effect of light on gene expression in Schizophyllum commune

Project description:In order to study the effect of light on gene expression in Schizophyllum commune, genome wide gene expression was analysed in 4-day-old monokaryotic and dikaryotic wild type colonies, grown either in light or in darkness.

2013-08-12 | GSE23533 | GEO

Characterization of Cellobiohydrolases from <i>Schizophyllum commune</i> KMJ820.

Project description:A novel cellobiohydrolase (CBH)-generating fungi have been isolated and categorized as Schizophyllum commune KMJ820 based on morphology and rDNA gene sequence. Cellulose powder was used as carbon source, the total enzyme activity was 11.51 U/ml is noted; which is among the highest amounts of CBH-generating microbes studied. CBH have been purified to homogenize, with pursual of serial chromatography using S. commune supernatants and two different CBHs were found; CBH 1 and 2. The filtered CBHs showed greater activity (V max = 51.4 and 20.8 U/mg) in contrast to CBHs from earlier studies. The MW (molecular weights) of S. commune CBH 1 and 2 were verified to be approximately 50 kDa and 150 kDa, respectively, by size exclusion chromatography. Even though CBHs have been evaluated from other sources, but S. commune CBH is prominent in comparison to other CBHs by its high enzyme activity.

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