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Concordia Publications:

Title Authors PubMed ID
1 Phenogenomics reveals the ecology and evolution of Trichoderma fungi for sustainable agriculture Steindorff AS; Cai FM; Ding M; Jiang S; Atanasova L; Baker SE; Barbosa-Filho JR; Bayram Akcapinar G; Brown DW; Chaverri P; Chen P; Chenthamara K; Daum C; Drula E; Dubey M; Brandström Durling M; Flatschacher D; Ebner T; Emri T; Gao R; Georg RC; Henrissat B; Hermosa R; Herrera-Estrella A; Hinterdobler W; Kainz P; Karlsson M; Kredics L; Kubicek CP; Kuo A; LaButti K; Lipzen A; Lorito M; Mach RL; Manganiello G; Marik T; Martinez-Reyes N; Mayrhofer-Reinhartshuber M; Miskei M; Moisan MC; Mondo S; Monte E; Ng V; Pa 41775999
GENOMICS
2 An examination of the quinic acid utilization genes in Aspergillus niger reveals the involvement of two pH-dependent permeases Sgro M; Reid ID; Arentshorst M; Ram AFJ; Tsang A; 40853219
GENOMICS
3 Global survey of secondary metabolism in em Aspergillus niger /em via activation of specific transcription factors Semper C; Pham TTM; Ram S; Palys S; Evdokias G; Ouedraogo JP; Moisan MC; Geoffrion N; Reid I; Di Falco M; Bailey Z; Tsang A; Benoit-Gelber I; Savchenko A; 40852424
GENOMICS
4 Fortifying the Rasamsonia emersonii secretome with recombinant cellobiohydrolase (GH7) for efficient biomass saccharification Raheja Y; Singh V; Gaur VK; Sharma G; Tsang A; Chadha BS; 40622460
GENOMICS
5 Heterologous Expression of Thermostable Endoglucanases from Rasamsonia emersonii: A Paradigm Shift in Biomass Hydrolysis Raheja Y; Singh V; Gaur VK; Tsang A; Chadha BS; 40418313
GENOMICS

 

Title:Heterologous Expression of Thermostable Endoglucanases from Rasamsonia emersonii: A Paradigm Shift in Biomass Hydrolysis
Authors:Raheja YSingh VGaur VKTsang AChadha BS
Link:https://pubmed.ncbi.nlm.nih.gov/40418313/
DOI:10.1007/s12010-025-05258-5
Publication:Applied biochemistry and biotechnology
Keywords:Rasamsonia emersoniiHigh thermostabilityHydrolysisLiquefactionPre-treated rice straw
PMID:40418313 Category: Date Added:2025-05-26
Dept Affiliation: GENOMICS
1 Department of Microbiology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India.
2 School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Republic of Korea.
3 Amity Institute of Biotechnology, Amity University Uttar Pradesh, Noida, India.
4 Center for Structural and Functional Genomics, Concordia University, 7141 Sherbrooke Street West, Montreal, QC, H4B 1R6, Canada.
5 Department of Microbiology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India. chadhabs@yahoo.com.

Description:

In this study, two thermostable endoglucanases (Rem_GH5EG and Rem_GH7EG) from Rasamsonia emersonii were heterologously expressed in Pichia pastoris and characterized to evaluate their potential for industrial biomass saccharification. Rem_GH5EG demonstrated markedly superior catalytic efficiency toward barley ß-glucan (kcat/Km = 6.3 × 10-3/mg mL/min), while Rem_GH7EG exhibited a preference for carboxymethyl cellulose (kcat/Km = 1.17 × 10-3/mg mL/min). Notably, Rem_GH5EG showed optimal activity at 90 °C with a half-life (t1/2) of 2 h, whereas Rem_GH7EG was active at 70 °C with a half-life (t1/2) of 1 h, highlighting its suitability for high-temperature hydrolysis processes. Moreover, pre-conditioning of steam and acid pretreated unwashed rice straw slurry with Rem_GH5EG at 90 °C effectively reduced viscosity-related mass transfer limitations, thereby enhancing the hydrolytic efficiency of benchmark cellulase. These findings underscore the industrial relevance of Rem_GH5EG as the more promising candidate for developing efficient enzyme cocktails for biomass saccharification.





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