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Department of Bioproducts and Biosystems

Protein Technology

Professor Emma Master leads the Protein Technology research group. Our aim is to create breakthrough biotechnologies that customize nature’s most abundant structural biopolymers for use as building blocks in high-performance materials.
CHEM/BIO2/Protein technology group_enzyme research
Enzyme

Our approach applies functional genomics and biophysical methods to develop unique carbohydrate-active enzymes and non-catalytic proteins that control the chemical functionality and assembly of major lignocellulose components.

Research areas:

  1. Biocatalysts to upgrade renewable bioresources
  2. Protein Engineering
  3. Carbohydrate-active enzymes

By using biotechnologies to upgrade biopolymers for multipurpose and sustainable materials, we will:

  1. leverage environmental and economic benefits that are achieved when retaining naturally fixed CO2 in new bio-based products;
  2. establish biocatalysts as instruments for bio-based materials engineering;
  3. realize intact, structural biopolymers as the superior progenitor of high-performance materials.

Examples of ongoing research projects:

  • Carbohydrate-active oxidoreductases for bio-based cross linkers
  • Biocatalytic cascades for hemicellulose reassembly
  • Microbial expansin related proteins for bio-fibre engineering

Research aims to find tools for sustainable utilization of renewable plant resources

Forest biomass (lignocellulose) is largely made up of three polymers, cellulose, hemicelluloses, and lignin. Today, cellulose fibers are the main product of pulp mills across Finland and globally, while over 50% of the wood biomass resource remains underutilized. Our research focuses on the discovery and development of new proteins that can be used to sustainably synthesize novel, high-value biomaterials from underutilized and renewable plant resources.

Enzymes are tools with advantages

Enzyme catalyzed reactions benefit from four key advantages.

  1. Specificity that allows predictable modification of complex substrates.
  2. Exquisite tunability through protein discovery and engineering.
  3. Operation in mild reaction conditions that can reduce energy costs and undesired transformation of starting materials.
  4. Biodegradability, which helps to ensure the sustainability of the synthesis process as well as end product.

The Protein Technology group mines unexplored genomic data from plant biomass degrading microorganisms to discover new enzymes and non-catalytic proteins able to create valuable, bio-based products from plant polysaccharides. To support this objective, our group also designs and develops new enzyme screens to address the increasing limitations of existing assays.

Our research through images:

CHEM/Bio2/Protein technology group_plant fiber after enzyme treatment
CHEM/BIO/Protein technology group_enzyme research 1
CHEM/BIO/Protein technology group_enzyme research 2

Enzyme research

CHEM/BIO/Protein technology group_enzyme research 1
CHEM/BIO/Protein technology group_enzyme research 2
CHEM/BIO/Protein technology group_enzyme research overview

Enzyme research

CHEM/BIO/Protein technology group_enzyme research 2
CHEM/BIO/Protein technology group_enzyme research overview
CHEM/BIO/Protein technology group_bioinformatics research

Enzyme research overview

CHEM/BIO/Protein technology group_enzyme research overview
CHEM/BIO/Protein technology group_bioinformatics research
CHEM/BIO/Protein technology group_bioinformatics research

Bioinformatics research

CHEM/BIO/Protein technology group_bioinformatics research
CHEM/BIO/Protein technology group_bioinformatics research
CHEM/BIO2/Protein technology group_Time of Flight Secondary Mass Spectrometry

Bioinformatics research

CHEM/BIO/Protein technology group_bioinformatics research
CHEM/BIO2/Protein technology group_Time of Flight Secondary Mass Spectrometry
CHEM/Bio2/Protein technology group_plant fiber after enzyme treatment

Time of Flight Secondary Mass Spectrometry (ToF SIMS) to image plant fiber after enzyme treatment

CHEM/BIO2/Protein technology group_Time of Flight Secondary Mass Spectrometry
CHEM/Bio2/Protein technology group_plant fiber after enzyme treatment
CHEM/BIO/Protein technology group_enzyme research 1

Scanning Transmission X-ray Microscopy (STXM) to image plant fiber after enzyme treatment

Research group members:

Protein technology group picture

Latest publications:

Deepika Dahiya, Kim Kutvonen, Emma Master, Tero Eerikäinen 2026 Bioresource Technology Reports

Xuebin Feng, William Chau, Emma R. Master 2026 Protein Science

Ylenia Jabalera, Agustín J. Marín-Peña, Edward Wagner, Daniel J. Cosgrove, Emma R. Master, Raul Perez-Jimenez 2026 International Journal of Biological Macromolecules

Taru Koitto, Anna Pohto, Elizaveta Sidorova, Thu V. Vuong, Merja Penttilä, Emma R. Master 2026 Biotechnology for Biofuels and Bioproducts

Anna Pohto, Taru Koitto, Deepika Dahiya, Alessandra Castro, Elizaveta Sidorova, Martina Huusela, Scott E. Baker, Adrian Tsang, Emma Master 2026 Proteins: Structure, Function, and Bioinformatics

Olanrewaju Raji, Thu V. Vuong, Nadia Davoudvandi, Emma R. Master 2026 Biotechnology Letters

Yan Wang, Nina Aro, Minna Yamamoto, Mikhail Iakovlev, Markku Saloheimo, Kaisa Marjamaa, Emma Master, Ossi Turunen, Anna Kankaanpää 2026 Bioresource Technology Reports

Deepika Dahiya, Zsuzsanna Péter-Szabó, Manjula Senanayake, Sai Venkatesh Pingali, Wellington C. Leite, James Byrnes, Garry W. Buchko, Pramod Sivan, Francisco Vilaplana, Emma R. Master, Hugh O’Neill 2025 Biotechnology for Biofuels and Bioproducts

Salla Hiltunen, Deepika Dahiya, Martina Huusela, Emma Master, Matti Ristolainen, Janak Sapkota 2025 Industrial Crops and Products

Ylenia Jabalera, Deepika Dahiya, Carlos David Ordóñez Cencerrado, Antonio Jesus Caballero, Nerea Zaldua, Arantxa Eceiza, Emma R. Master, Raul Perez-Jimenez 2025 Carbohydrate Polymers
More information on our research in the Aalto research portal.
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