Keyword search (4,163 papers available)

"transcription factor" Keyword-tagged Publications:

Title Authors PubMed ID
1 Functional and structural characterization of an IclR family transcription factor for the development of dicarboxylic acid biosensors Pham C; Nasr MA; Skarina T; Di Leo R; Kwan DH; Martin VJJ; Stogios PJ; Mahadevan R; Savchenko A; 38696354
BIOLOGY
2 CRISPR/Cas9 mediated gene editing of transcription factor ACE1 for enhanced cellulase production in thermophilic fungus Rasamsonia emersonii Singh V; Raheja Y; Basotra N; Sharma G; Tsang A; Chadha BS; 37658430
CSFG
3 The chimeric GaaR-XlnR transcription factor induces pectinolytic activities in the presence of D-xylose in Aspergillus niger Kun RS; Garrigues S; Di Falco M; Tsang A; de Vries RP; 34236481
CSFG
4 Biosynthesis of Alkylcitric Acids in Aspergillus niger Involves Both Co-localized and Unlinked Genes. Palys S, Pham TTM, Tsang A 32695080
CSFG
5 Evolutionary Transition of GAL Regulatory Circuit from Generalist to Specialist Function in Ascomycetes. Choudhury BI, Whiteway M 29395731
BIOLOGY
6 W361R mutation in GaaR, the regulator of D-galacturonic acid-responsive genes, leads to constitutive production of pectinases in Aspergillus niger. Alazi E, Niu J, Otto SB, Arentshorst M, Pham TTM, Tsang A, Ram AFJ 30298571
CSFG

 

Title:W361R mutation in GaaR, the regulator of D-galacturonic acid-responsive genes, leads to constitutive production of pectinases in Aspergillus niger.
Authors:Alazi E,  Niu J,  Otto SB,  Arentshorst M,  Pham TTM,  Tsang A,  Ram AFJ
Link:https://www.ncbi.nlm.nih.gov/pubmed/30298571?dopt=Abstract
DOI:10.1002/mbo3.732
Publication:MicrobiologyOpen
Keywords:Aspergillus niger;  CRISPR-Cas9;  constitutively active transcription factor;  missense mutation;  pectinase;  transcription factor localization; 
PMID:30298571 Category:Microbiologyopen Date Added:2019-06-07
Dept Affiliation: CSFG
1 Molecular Microbiology and Biotechnology, Institute of Biology Leiden, Leiden University, Leiden, The Netherlands.
2 Centre for Structural and Functional Genomics, Concordia University, Montreal, Québec, Canada.

Description:

W361R mutation in GaaR, the regulator of D-galacturonic acid-responsive genes, leads to constitutive production of pectinases in Aspergillus niger.

Microbiologyopen. 2019 May;8(5):e00732

Authors: Alazi E, Niu J, Otto SB, Arentshorst M, Pham TTM, Tsang A, Ram AFJ

Abstract

Polysaccharides present in plant biomass, such as pectin, are the main carbon source for filamentous fungi. Aspergillus niger naturally secretes pectinases to degrade pectin and utilize the released monomers, mainly D-galacturonic acid. The transcriptional activator GaaR, the repressor of D-galacturonic acid utilization GaaX, and the physiological inducer 2-keto-3-deoxy-L-galactonate play important roles in the transcriptional regulation of D-galacturonic acid-responsive genes, which include the genes encoding pectinases. In this study, we described the mutations found in gaaX and gaaR that enabled constitutive (i.e., inducer-independent) expression of pectinases by A. niger. Using promoter-reporter strains (PpgaX-amdS) and polygalacturonic acid plate assays, we showed that W361R mutation in GaaR results in constitutive production of pectinases. Analysis of subcellular localization of C-terminally eGFP-tagged GaaR/GaaRW 361R revealed important differences in nuclear accumulation of N- versus C-terminally eGFP-tagged GaaR.

PMID: 30298571 [PubMed - in process]




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