Keyword search (3,619 papers available)


TOUCAN: a framework for fungal biosynthetic gene cluster discovery.

Author(s): Almeida H, Palys S, Tsang A, Diallo AB

Fungal secondary metabolites (SMs) are an important source of numerous bioactive compounds largely applied in the pharmaceutical industry, as in the production of antibiotics and anticancer medications. The discovery of novel fungal SMs can potentially bene...

Article GUID: 33575642
Deletion of the Aspergillus niger Pro-Protein Processing Protease Gene kexB Results in a pH-Dependent Morphological Transition during Submerged Cultivations and Increases Cell Wall Chitin Content.

Author(s): van Leeuwe TM, Arentshorst M, Forn-Cuní G, Geoffrion N, Tsang A, Delvigne F, Meijer AH, Ram AFJ, Punt PJ...

There is a growing interest in the use of post-fermentation mycelial waste to obtain cell wall chitin as an added-value product. In the pursuit to identify suitable production strains that can be u...

Article GUID: 33276589
Genome Sequence Resource of Bacillus velezensis EB14, a native endophytic bacterial strain with biocontrol potential against the poplar stem canker causative pathogen, Sphaerulina musiva.

Author(s): Naik S, Tsang A, Ramanan US, Dayanandan S

Bacillus velezensis EB14, isolated from a leaf of Populus ? jackii, possesses antagonistic activity against Sphaerulina musiva, a fungal pathogen of Populus sp. that causes leaf spots and stem cankers on Poplars limiting the utility of hybrid poplars as pla...

Article GUID: 33263425
Biosynthesis of Alkylcitric Acids in Aspergillus niger Involves Both Co-localized and Unlinked Genes.

Author(s): Palys S, Pham TTM, Tsang A

Front Microbiol. 2020;11:1378 Authors: Palys S, Pham TTM, Tsang A

Article GUID: 32695080
Penicillium subrubescens adapts its enzyme production to the composition of plant biomass.

Author(s): Dilokpimol A, Peng M, Di Falco M, Chin A Woeng T, Hegi RMW, Granchi Z, Tsang A, Hildén KS, Mäkelä MR, de Vries RP

Bioresour Technol. 2020 May 05;311:123477 Authors: Dilokpimol A, Peng M, Di Falco M, Chin A Woeng T, Hegi RMW, Granchi Z, Tsang A, Hildén KS, Mäkelä MR, de Vries RP

Article GUID: 32408196
Evidence for ligninolytic activity of the ascomycete fungus Podospora anserina.

Author(s): van Erven G, Kleijn AF, Patyshakuliyeva A, Di Falco M, Tsang A, de Vries RP, van Berkel WJH, Kabel MA

Biotechnol Biofuels. 2020;13:75 Authors: van Erven G, Kleijn AF, Patyshakuliyeva A, Di Falco M, Tsang A, de Vries RP, van Berkel WJH, Kabel MA

Article GUID: 32322305
Functional Characterization of Clinical Isolates of the Opportunistic Fungal Pathogen Aspergillus nidulans.

Author(s): Bastos RW, Valero C, Silva LP, Schoen T, Drott M, Brauer V, Silva-Rocha R, Lind A, Steenwyk JL, Rokas A, Rodrigues F, Resendiz-Sharpe A, Lag...

mSphere. 2020 Apr 08;5(2): Authors: Bastos RW, Valero C, Silva LP, Schoen T, Drott M, Brauer V, Silva-Rocha R, Lind A, Steenwyk JL, Rokas A, Rodrigues F, Resendiz-Sharpe A, Lagrou K, Marcet-Houben...

Article GUID: 32269156
The effects of external Mn2+ concentration on hyphal morphology and citric acid production are mediated primarily by the NRAMP-family transporter DmtA in Aspergillus niger.

Author(s): Fejes B, Ouedraogo JP, Fekete E, Sándor E, Flipphi M, Soós Á, Molnár ÁP, Kovács B, Kubicek CP, Tsang A, Karaffa L

Microb Cell Fact. 2020 Jan 30;19(1):17 Authors: Fejes B, Ouedraogo JP, Fekete E, Sándor E, Flipphi M, Soós Á, Molnár ÁP, Kovács B, Kubicek CP, Tsang A, Karaffa L

Article GUID: 32000778
Discovery and Expression of Thermostable LPMOs from Thermophilic Fungi for Producing Efficient Lignocellulolytic Enzyme Cocktails.

Author(s): Agrawal D, Basotra N, Balan V, Tsang A, Chadha BS

Appl Biochem Biotechnol. 2019 Dec 02;: Authors: Agrawal D, Basotra N, Balan V, Tsang A, Chadha BS

Article GUID: 31792786
Glucose-mediated repression of plant biomass utilization in the white-rot fungus Dichomitus squalens.

Author(s): Daly P, Peng M, Di Falco M, Lipzen A, Wang M, Ng V, Grigoriev IV, Tsang A, Mäkelä MR, de Vries RP

Appl Environ Microbiol. 2019 Oct 04;: Authors: Daly P, Peng M, Di Falco M, Lipzen A, Wang M, Ng V, Grigoriev IV, Tsang A, Mäkelä MR, de Vries RP

Article GUID: 31585998
Enzymes of early-diverging, zoosporic fungi.

Author(s): Lange L, Barrett K, Pilgaard B, Gleason F, Tsang A

Appl Microbiol Biotechnol. 2019 Jul 15;: Authors: Lange L, Barrett K, Pilgaard B, Gleason F, Tsang A

Article GUID: 31309267
Effects of a recombinant fibrolytic enzyme on fiber digestion, ruminal fermentation, nitrogen balance and total tract digestibility of heifers fed a high forage diet.

Author(s): Ran T, Saleem AM, Shen Y, Ribeiro GO, Beauchemin KA, Tsang A, Yang W, McAllister TA

Effects of a recombinant fibrolytic enzyme on fiber digestion, ruminal fermentation, nitrogen balance and total tract digestibility of heifers fed a high forage diet.
J Anim Sci. 2019 Jun 28;:
Authors: Ran T, Saleem AM, Shen Y, Ribeiro GO, Beauchemi...

Article GUID: 31251799
Biochemical and molecular characterization of a cellobiohydrolase from Trametes versicolor.

Author(s): Lahjouji K, Storms R, Xiao Z, Joung KB, Zheng Y, Powlowski J, Tsang A, Varin L

Appl Microbiol Biotechnol. 2007 May;75(2):337-46 Authors: Lahjouji K, Storms R, Xiao Z, Joung KB, Zheng Y, Powlowski J, Tsang A, Varin L

Article GUID: 17333176
Analytical and computational approaches to define the Aspergillus niger secretome.

Author(s): Tsang A, Butler G, Powlowski J, Panisko EA, Baker SE

Fungal Genet Biol. 2009 Mar;46 Suppl 1:S153-S160 Authors: Tsang A, Butler G, Powlowski J, Panisko EA, Baker SE

Article GUID: 19618504
A molecular phylogeny of thermophilic fungi.

Author(s): Morgenstern I, Powlowski J, Ishmael N, Darmond C, Marqueteau S, Moisan MC, Quenneville G, Tsang A

Fungal Biol. 2012 Apr;116(4):489-502 Authors: Morgenstern I, Powlowski J, Ishmael N, Darmond C, Marqueteau S, Moisan MC, Quenneville G, Tsang A

Article GUID: 22483047
A retinoblastoma orthologue is a major regulator of S-phase, mitotic, and developmental gene expression in Dictyostelium.

Author(s): Strasser K, Bloomfield G, MacWilliams A, Ceccarelli A, MacWilliams H, Tsang A

PLoS One. 2012;7(6):e39914 Authors: Strasser K, Bloomfield G, MacWilliams A, Ceccarelli A, MacWilliams H, Tsang A

Article GUID: 22768168
The production and characterization of a new active lipase from Acremonium alcalophilum using a plant bioreactor.

Author(s): Pereira EO, Tsang A, McAllister TA, Menassa R

Biotechnol Biofuels. 2013;6:111 Authors: Pereira EO, Tsang A, McAllister TA, Menassa R

Article GUID: 23915965
Transcriptome and exoproteome analysis of utilization of plant-derived biomass by Myceliophthora thermophila.

Author(s): Kolbusz MA, Di Falco M, Ishmael N, Marqueteau S, Moisan MC, Baptista CDS, Powlowski J, Tsang A

Fungal Genet Biol. 2014 Nov;72:10-20 Authors: Kolbusz MA, Di Falco M, Ishmael N, Marqueteau S, Moisan MC, Baptista CDS, Powlowski J, Tsang A

Article GUID: 24881579
SnowyOwl: accurate prediction of fungal genes by using RNA-Seq and homology information to select among ab initio models.

Author(s): Reid I, O'Toole N, Zabaneh O, Nourzadeh R, Dahdouli M, Abdellateef M, Gordon PM, Soh J, Butler G, Sensen CW, Tsang A

BMC Bioinformatics. 2014 Jul 01;15:229 Authors: Reid I, O'Toole N, Zabaneh O, Nourzadeh R, Dahdouli M, Abdellateef M, Gordon PM, Soh J, Butler G, Sensen CW, Tsang A

Article GUID: 24980894
The characterization of the endoglucanase Cel12A from Gloeophyllum trabeum reveals an enzyme highly active on β-glucan.

Author(s): Miotto LS, de Rezende CA, Bernardes A, Serpa VI, Tsang A, Polikarpov I

PLoS One. 2014;9(9):e108393 Authors: Miotto LS, de Rezende CA, Bernardes A, Serpa VI, Tsang A, Polikarpov I

Article GUID: 25251390
Fungal genomics.

Author(s): Tsang A

Brief Funct Genomics. 2014 Nov;13(6):421-3 Authors: Tsang A PMID: 25411199 [PubMed - indexed for MEDLINE]

Article GUID: 25411199
Mycothermus thermophilus gen. et comb. nov., a new home for the itinerant thermophile Scytalidium thermophilum (Torula thermophila).

Author(s): Natvig DO, Taylor JW, Tsang A, Hutchinson MI, Powell AJ

Mycologia. 2015 Mar-Apr;107(2):319-27 Authors: Natvig DO, Taylor JW, Tsang A, Hutchinson MI, Powell AJ

Article GUID: 25550298
Machine learning for biomedical literature triage.

Author(s): Almeida H, Meurs MJ, Kosseim L, Butler G, Tsang A

PLoS One. 2014;9(12):e115892 Authors: Almeida H, Meurs MJ, Kosseim L, Butler G, Tsang A

Article GUID: 25551575
mycoCLAP, the database for characterized lignocellulose-active proteins of fungal origin: resource and text mining curation support.

Author(s): Strasser K, McDonnell E, Nyaga C, Wu M, Wu S, Almeida H, Meurs MJ, Kosseim L, Powlowski J, Butler G, Tsang A

Database (Oxford). 2015;2015: Authors: Strasser K, McDonnell E, Nyaga C, Wu M, Wu S, Almeida H, Meurs MJ, Kosseim L, Powlowski J, Butler G, Tsang A

Article GUID: 25754864
Improvement in Saccharification Yield of Mixed Rumen Enzymes by Identification of Recalcitrant Cell Wall Constituents Using Enzyme Fingerprinting.

Author(s): Badhan A, Wang YX, Gruninger R, Patton D, Powlowski J, Tsang A, McAllister TA

Biomed Res Int. 2015;2015:562952 Authors: Badhan A, Wang YX, Gruninger R, Patton D, Powlowski J, Tsang A, McAllister TA

Article GUID: 26180803
Closely related fungi employ diverse enzymatic strategies to degrade plant biomass.

Author(s): Benoit I, Culleton H, Zhou M, DiFalco M, Aguilar-Osorio G, Battaglia E, Bouzid O, Brouwer CPJM, El-Bushari HBO, Coutinho PM, Gruben BS, Hild...

Biotechnol Biofuels. 2015;8:107 Authors: Benoit I, Culleton H, Zhou M, DiFalco M, Aguilar-Osorio G, Battaglia E, Bouzid O, Brouwer CPJM, El-Bushari HBO, Coutinho PM, Gruben BS, Hildén KS, Hou...

Article GUID: 26236396
Malbranchea cinnamomea: A thermophilic fungal source of catalytically efficient lignocellulolytic glycosyl hydrolases and metal dependent enzymes.

Author(s): Mahajan C, Basotra N, Singh S, Di Falco M, Tsang A, Chadha BS

Bioresour Technol. 2016 Jan;200:55-63 Authors: Mahajan C, Basotra N, Singh S, Di Falco M, Tsang A, Chadha BS

Article GUID: 26476165
Genetics of mating in members of the Chaetomiaceae as revealed by experimental and genomic characterization of reproduction in Myceliophthora heterothallica.

Author(s): Hutchinson MI, Powell AJ, Tsang A, O'Toole N, Berka RM, Barry K, Grigoriev IV, Natvig DO

Fungal Genet Biol. 2016 Jan;86:9-19 Authors: Hutchinson MI, Powell AJ, Tsang A, O'Toole N, Berka RM, Barry K, Grigoriev IV, Natvig DO

Article GUID: 26608618
Evaluation of secretome of highly efficient lignocellulolytic Penicillium sp. Dal 5 isolated from rhizosphere of conifers.

Author(s): Rai R, Kaur B, Singh S, Di Falco M, Tsang A, Chadha BS

Bioresour Technol. 2016 Sep;216:958-67 Authors: Rai R, Kaur B, Singh S, Di Falco M, Tsang A, Chadha BS

Article GUID: 27341464
The molecular response of the white-rot fungus Dichomitus squalens to wood and non-woody biomass as examined by transcriptome and exoproteome analyses.

Author(s): Rytioja J, Hildén K, Di Falco M, Zhou M, Aguilar-Pontes MV, Sietiö OM, Tsang A, de Vries RP, Mäkelä MR

Environ Microbiol. 2017 03;19(3):1237-1250 Authors: Rytioja J, Hildén K, Di Falco M, Zhou M, Aguilar-Pontes MV, Sietiö OM, Tsang A, de Vries RP, Mäkelä MR

Article GUID: 28028889
An Evolutionarily Conserved Transcriptional Activator-Repressor Module Controls Expression of Genes for D-Galacturonic Acid Utilization in Aspergillus niger.

Author(s): Niu J, Alazi E, Reid ID, Arentshorst M, Punt PJ, Visser J, Tsang A, Ram AF

Genetics. 2017 01;205(1):169-183 Authors: Niu J, Alazi E, Reid ID, Arentshorst M, Punt PJ, Visser J, Tsang A, Ram AF

Article GUID: 28049705
Identification of Genes Involved in the Degradation of Lignocellulose Using Comparative Transcriptomics.

Author(s): Gruninger RJ, Reid I, Forster RJ, Tsang A, McAllister TA

Methods Mol Biol. 2017;1588:279-298 Authors: Gruninger RJ, Reid I, Forster RJ, Tsang A, McAllister TA

Article GUID: 28417376
The pathway intermediate 2-keto-3-deoxy-L-galactonate mediates the induction of genes involved in D-galacturonic acid utilization in Aspergillus niger.

Author(s): Alazi E, Khosravi C, Homan TG, du Pré S, Arentshorst M, Di Falco M, Pham TTM, Peng M, Aguilar-Pontes MV, Visser J, Tsang A, de Vries RP, Ram AFJ

FEBS Lett. 2017 05;591(10):1408-1418 Authors: Alazi E, Khosravi C, Homan TG, du Pré S, Arentshorst M, Di Falco M, Pham TTM, Peng M, Aguilar-Pontes MV, Visser J, Tsang A, de Vries RP, Ram AFJ

Article GUID: 28417461
Discovery and characterization of family 39 glycoside hydrolases from rumen anaerobic fungi with polyspecific activity on rare arabinosyl substrates.

Author(s): Jones DR, Uddin MS, Gruninger RJ, Pham TTM, Thomas D, Boraston AB, Briggs J, Pluvinage B, McAllister TA, Forster RJ, Tsang A, Selinger LB, Abbott DW

J Biol Chem. 2017 07 28;292(30):12606-12620 Authors: Jones DR, Uddin MS, Gruninger RJ, Pham TTM, Thomas D, Boraston AB, Briggs J, Pluvinage B, McAllister TA, Forster RJ, Tsang A, Selinger LB, Abbott DW

Article GUID: 28588026
Expression of catalytically efficient xylanases from thermophilic fungus Malbranchea cinnamomea for synergistically enhancing hydrolysis of lignocellulosics.

Author(s): Basotra N, Joshi S, Satyanarayana T, Pati PK, Tsang A, Chadha BS

Int J Biol Macromol. 2018 Mar;108:185-192 Authors: Basotra N, Joshi S, Satyanarayana T, Pati PK, Tsang A, Chadha BS

Article GUID: 29174359
Saccharification efficiencies of multi-enzyme complexes produced by aerobic fungi.

Author(s): Badhan A, Huang J, Wang Y, Abbott DW, Di Falco M, Tsang A, McAllister T

N Biotechnol. 2018 Nov 25;46:1-6 Authors: Badhan A, Huang J, Wang Y, Abbott DW, Di Falco M, Tsang A, McAllister T

Article GUID: 29803771
Introduction: Overview of Fungal Genomics.

Author(s): de Vries RP, Grigoriev IV, Tsang A

Methods Mol Biol. 2018;1775:1-7 Authors: de Vries RP, Grigoriev IV, Tsang A

Article GUID: 29876804
Manual Gene Curation and Functional Annotation.

Author(s): McDonnell E, Strasser K, Tsang A

Methods Mol Biol. 2018;1775:185-208 Authors: McDonnell E, Strasser K, Tsang A

Article GUID: 29876819
New recombinant fibrolytic enzymes for improved in vitro ruminal fiber degradability of barley straw.

Author(s): Ribeiro GO, Badhan A, Huang J, Beauchemin KA, Yang W, Wang Y, Tsang A, McAllister TA

J Anim Sci. 2018 Jul 20;: Authors: Ribeiro GO, Badhan A, Huang J, Beauchemin KA, Yang W, Wang Y, Tsang A, McAllister TA

Article GUID: 30053012
Application of Transcriptomics to Compare the Carbohydrate Active Enzymes That Are Expressed by Diverse Genera of Anaerobic Fungi to Degrade Plant Cell Wall Carbohydrates.

Author(s): Gruninger RJ, Nguyen TTM, Reid ID, Yanke JL, Wang P, Abbott DW, Tsang A, McAllister T

Front Microbiol. 2018;9:1581 Authors: Gruninger RJ, Nguyen TTM, Reid ID, Yanke JL, Wang P, Abbott DW, Tsang A, McAllister T

Article GUID: 30061875
Efficient genome editing using tRNA promoter-driven CRISPR/Cas9 gRNA in Aspergillus niger.

Author(s): Song L, Ouedraogo JP, Kolbusz M, Nguyen TTM, Tsang A

PLoS One. 2018;13(8):e0202868 Authors: Song L, Ouedraogo JP, Kolbusz M, Nguyen TTM, Tsang A

Article GUID: 30142205
W361R mutation in GaaR, the regulator of D-galacturonic acid-responsive genes, leads to constitutive production of pectinases in Aspergillus niger.

Author(s): Alazi E, Niu J, Otto SB, Arentshorst M, Pham TTM, Tsang A, Ram AFJ

Microbiologyopen. 2019 May;8(5):e00732 Authors: Alazi E, Niu J, Otto SB, Arentshorst M, Pham TTM, Tsang A, Ram AFJ

Article GUID: 30298571
Investigation of inter- and intraspecies variation through genome sequencing of Aspergillus section Nigri.

Author(s): Vesth TC, Nybo JL, Theobald S, Frisvad JC, Larsen TO, Nielsen KF, Hoof JB, Brandl J, Salamov A, Riley R, Gladden JM, Phatale P, Nielsen MT, ...

Nat Genet. 2018 12;50(12):1688-1695 Authors: Vesth TC, Nybo JL, Theobald S, Frisvad JC, Larsen TO, Nielsen KF, Hoof JB, Brandl J, Salamov A, Riley R, Gladden JM, Phatale P, Nielsen MT, Lyhne EK, K...

Article GUID: 30349117
The obligate alkalophilic soda-lake fungus Sodiomyces alkalinus has shifted to a protein diet.

Author(s): Grum-Grzhimaylo AA, Falkoski DL, van den Heuvel J, Valero-Jiménez CA, Min B, Choi IG, Lipzen A, Daum CG, Aanen DK, Tsang A, Henrissat B, Bil...

Mol Ecol. 2018 12;27(23):4808-4819 Authors: Grum-Grzhimaylo AA, Falkoski DL, van den Heuvel J, Valero-Jiménez CA, Min B, Choi IG, Lipzen A, Daum CG, Aanen DK, Tsang A, Henrissat B, Bilanenko ...

Article GUID: 30368956
The gold-standard genome of Aspergillus niger NRRL 3 enables a detailed view of the diversity of sugar catabolism in fungi.

Author(s): Aguilar-Pontes MV, Brandl J, McDonnell E, Strasser K, Nguyen TTM, Riley R, Mondo S, Salamov A, Nybo JL, Vesth TC, Grigoriev IV, Andersen MR,...

Stud Mycol. 2018 Sep;91:61-78 Authors: Aguilar-Pontes MV, Brandl J, McDonnell E, Strasser K, Nguyen TTM, Riley R, Mondo S, Salamov A, Nybo JL, Vesth TC, Grigoriev IV, Andersen MR, Tsang A, de Vrie...

Article GUID: 30425417
Thermostable xylanases from thermophilic fungi and bacteria: Current perspective.

Author(s): Chadha BS, Kaur B, Basotra N, Tsang A, Pandey A

Bioresour Technol. 2019 Apr;277:195-203 Authors: Chadha BS, Kaur B, Basotra N, Tsang A, Pandey A

Article GUID: 30679061
The presence of trace components significantly broadens the molecular response of Aspergillus niger to guar gum.

Author(s): Coconi Linares N, Di Falco M, Benoit-Gelber I, Gruben BS, Peng M, Tsang A, Mäkelä MR, de Vries RP

N Biotechnol. 2019 Jul 25;51:57-66 Authors: Coconi Linares N, Di Falco M, Benoit-Gelber I, Gruben BS, Peng M, Tsang A, Mäkelä MR, de Vries RP

Article GUID: 30797054
Phylogenetic Analysis of Protein Family.

Author(s): Song L, Wu S, Tsang A

Phylogenetic Analysis of Protein Family.

Methods Mol Biol. 2018;1775:267-275

Authors: Song L, Wu S, Tsang A

Abstract
With the number of sequenced genomes increasing rapidly, it is impractical to perform functional and stru...

Article GUID: 29876824
Title:An Evolutionarily Conserved Transcriptional Activator-Repressor Module Controls Expression of Genes for D-Galacturonic Acid Utilization in Aspergillus niger.
Authors:Niu J,  Alazi E,  Reid ID,  Arentshorst M,  Punt PJ,  Visser J,  Tsang A,  Ram AF
Link:https://www.ncbi.nlm.nih.gov/pubmed/28049705?dopt=Abstract
DOI:10.1534/genetics.116.194050
Category:Genetics
PMID:28049705
Dept Affiliation: GENOMICS
1 Molecular Microbiology and Biotechnology, Leiden University, Institute of Biology Leiden, 2333 BE Leiden, The Netherlands.
2 Centre for Structural and Functional Genomics, Concordia University, Montreal, Quebec H4B1R6, Canada.
3 Dutch DNA Biotech, 3704 HE Zeist, Utrecht, The Netherlands.
4 Molecular Microbiology and Biotechnology, Leiden University, Institute of Biology Leiden, 2333 BE Leiden, The Netherlands a.f.j.ram@biology.leidenuniv.nl.

Description:

An Evolutionarily Conserved Transcriptional Activator-Repressor Module Controls Expression of Genes for D-Galacturonic Acid Utilization in Aspergillus niger.

Genetics. 2017 01;205(1):169-183

Authors: Niu J, Alazi E, Reid ID, Arentshorst M, Punt PJ, Visser J, Tsang A, Ram AF

Abstract

The expression of genes encoding extracellular polymer-degrading enzymes and the metabolic pathways required for carbon utilization in fungi are tightly controlled. The control is mediated by transcription factors that are activated by the presence of specific inducers, which are often monomers or monomeric derivatives of the polymers. A D-galacturonic acid-specific transcription factor named GaaR was recently identified and shown to be an activator for the expression of genes involved in galacturonic acid utilization in Botrytis cinerea and Aspergillus niger Using a forward genetic screen, we isolated A. niger mutants that constitutively express GaaR-controlled genes. Reasoning that mutations in the gaaR gene would lead to a constitutively activated transcription factor, the gaaR gene in 11 of the constitutive mutants was sequenced, but no mutations in gaaR were found. Full genome sequencing of five constitutive mutants revealed allelic mutations in one particular gene encoding a previously uncharacterized protein (NRRL3_08194). The protein encoded by NRRL3_08194 shows homology to the repressor of the quinate utilization pathway identified previously in Neurospora crassa (qa-1S) and Aspergillus nidulans (QutR). Deletion of NRRL3_08194 in combination with RNA-seq analysis showed that the NRRL3_08194 deletion mutant constitutively expresses genes involved in galacturonic acid utilization. Interestingly, NRRL3_08194 is located next to gaaR (NRRL3_08195) in the genome. The homology to the quinate repressor, the chromosomal clustering, and the constitutive phenotype of the isolated mutants suggest that NRRL3_08194 is likely to encode a repressor, which we name GaaX. The GaaR-GaaX module and its chromosomal organization is conserved among ascomycetes filamentous fungi, resembling the quinate utilization activator-repressor module in amino acid sequence and chromosomal organization.

PMID: 28049705 [PubMed - indexed for MEDLINE]