Protein Allergens, Toxins, and Bioinformatics (PATB) Committee

Mission Statement

The PATB is committed to advancing the scientific understanding of the relevant parameters defining allergenic proteins and protein toxins, and encouraging the development of reliable and accurate methodologies for characterizing the allergenic potential of novel proteins in order to leverage the potential of bioinformatics approaches in accomplishing these efforts.

Renaming the Committee: PATC to PATB

Formerly the Protein Allergenicity Technical Committee (PATC), the committee has adopted a new designation, the Protein Allergens, Toxins and Bioinformatics (PATB) Committee, to embrace a broader scope, expertise, interests, and collaborators in the fields of bioinformatics and protein toxins, while strengthening its core focus in allergenicity.

Working Groups

  • Digestibility Working Group: Food Matrix Project

    This research project aims to study the impact of food matrices on the digestibility of proteins and complements the work completed on digestibility in vitro models, by testing whether protocols that take matrices into account would provide a better discrimination of allergens and nonallergens than protocols focusing on purified proteins in solution. In 2020, the experimental work was concluded. The data are being analyzed and a publication is planned in 2021.

  • Protein Toxins Task Force

    The goals of the task force are to (1) investigate approaches for identifying protein toxins and (2) suggest specific guidelines to identify new protein toxins. In 2019, the task force undertook a literature review to identify current approaches being used and leading experts in the topic to design the workshop held in 2020. The workshop covered recent advances in protein toxins biology, described the use of computational biology for protein toxins identification and characterization with in silico approaches, and discussed the applicability of existing tools and resources for safety assessment of novel food biotechnology products.

  • Immunogenicity

    This working group aims to examine application of an in vitro protocol for identifying specific T-cells and antibodies from nonallergic and allergic patients to pairs of proteins from the same protein family but with different allergenicity. After some delays in the anticipated start date due to the COVID-19 pandemic, the project officially received the green light from the leading institution, Copenhagen University Hospital at Gentofte (Copenhagen, Denmark) in late 2020.

  • COMPARE Allergen Database

    Development and annual update of a database of protein allergen sequences is ongoing. The sixth version of the database was released in January 2022. Throughout the year, the team re-initiated and conducted the 10-month-long process leading to the next annual update of the COMPARE Database which contains 2,463 allergen sequences. Visit COMPARE at https://comparedatabase.org for more details.

HESI Staff

Leadership Team

  • Ronald van Ree, PhD

    Academic Medical Center, University of Amsterdam

  • Andre Silvanovich, PhD

    Bayer CropScience

Committee Events

PATB Committee Protein Toxins Workshop

Virtual workshop, hosted by the HESI PATB Committee

The HESI Protein Allergens, Toxins, and Bioinformatics (PATB) Committee is hosting a virtual workshop focusing on the state of the science for a wide array of protein toxins classes, MOAs, structures, activity, and general biology. Additionally, the workshop will cover the bioinformatics analysis of protein toxins and how ...

Read more

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The HESI Protein Allergens, Toxins, and Bioinformatics (PATB) Committee is hosting a virtual workshop focusing on the state of the science for a wide array of protein toxins classes, MOAs, structures, activity, and general biology. Additionally, the workshop will cover the bioinformatics analysis of protein toxins and how to leverage computational biology for protein toxins identification/characterization, with in silico approaches.

The Protein Toxins Workshop will serve the dual purpose of learning from the experts in the field about the state of the science as well as assessing the translation of knowledge to practical applications, e.g., into weight-of-evidence approaches for the safety assessment of biotechnology products. The workshop aims to gain insight into how feasible/useful (or not) a protein toxin database could be in risk assessment/product development. This meeting will serve as an informational platform about HESI and will demonstrate the advances in protein toxins research, presented by international experts, and will help inform the development of novel approaches for the identification and classification of potential toxicity risk in novel proteins.

Details

  • Date: Wednesday, 21 October 2020 - Thursday, 22 October 2020
  • Time: 9:00 AM - 12:00 PM EST
  • Registration: Details coming soon
PATC_resize

Workshop Program Outline (subject to change)

Wednesday, 21 October 2020

  • 9:00 AM - Opening Remarks (Dr. Laura Privalle, BASF Corporation)
    • From protein toxins to biotechnology products
    • Setting the stage; considerations for publication of meeting report
  • 9:30 AM - Brief Codex Discussion
    • Allergenicity assessment vs. toxins/toxicity assessment
  • 10:00 AM - Terrestrial Toxins
  • 11:30 AM - Marine Toxins

 

Thursday, 22 October 2020

  • 9:00 AM - Bacterial Toxins
  • 10:30 AM - Bioinformatics & Computational Biology in Protein Toxins Research

 

For more information, please contact the PATB Committee's Senior Scientific Program Manager, Dr. Lucilia Mouriès at lmouries@hesiglobal.org.

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The HESI Protein Allergens, Toxins, and Bioinformatics (PATB) Committee is hosting a virtual workshop focusing on the state of the science for a wide array of protein toxins classes, MOAs, structures, activity, and general biology. Additionally, the workshop will cover the bioinformatics analysis of protein toxins and how to leverage computational biology for protein toxins identification/characterization, with in silico approaches.

The Protein Toxins Workshop will serve the dual purpose of learning from the experts in the field about the state of the science as well as assessing the translation of knowledge to practical applications, e.g., into weight-of-evidence approaches for the safety assessment of biotechnology products. The workshop aims to gain insight into how feasible/useful (or not) a protein toxin database could be in risk assessment/product development. This meeting will serve as an informational platform about HESI and will demonstrate the advances in protein toxins research, presented by international experts, and will help inform the development of novel approaches for the identification and classification of potential toxicity risk in novel proteins.

Details

  • Date: Wednesday, 21 October 2020 - Thursday, 22 October 2020
  • Time: 9:00 AM - 12:00 PM EST
  • Registration: Details coming soon
PATC_resize

Workshop Program Outline (subject to change)

Wednesday, 21 October 2020

  • 9:00 AM - Opening Remarks (Dr. Laura Privalle, BASF Corporation)
    • From protein toxins to biotechnology products
    • Setting the stage; considerations for publication of meeting report
  • 9:30 AM - Brief Codex Discussion
    • Allergenicity assessment vs. toxins/toxicity assessment
  • 10:00 AM - Terrestrial Toxins
  • 11:30 AM - Marine Toxins

 

Thursday, 22 October 2020

  • 9:00 AM - Bacterial Toxins
  • 10:30 AM - Bioinformatics & Computational Biology in Protein Toxins Research

 

For more information, please contact the PATB Committee's Senior Scientific Program Manager, Dr. Lucilia Mouriès at lmouries@hesiglobal.org.

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Committee Publications

Filter

“From Protein Toxins to Applied Toxicological Testing” virtual workshop identifies the need for a bioinformatic framework to assess novel food protein safety

The HESI Protein Allergens, Toxins, and Bioinformatics Committee, and the Society of Toxicology Food Safety Specialty Section co-hosted a virtual workshop titled “From Protein Toxins to Applied Toxicological Testing”.  Key outcomes of the workshop are highlighted here.

Read more

The COMPARE Database: A Public Resource for Allergen Identification, Adapted for Continuous Improvement

The availability of databases identifying allergenic proteins via a transparent and consensus-based scientific approach is of prime importance to support the safety review of genetically-modified foods and feeds, and public safety in general. Over recent years, screening for potential new allergens sequences has become ...

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Protease Resistance of Food Proteins: A Mixed Picture For Predicting Allergenicity but a Useful Tool for Assessing Exposure

Susceptibility to pepsin digestion of candidate transgene products is regarded an important parameter in the weight-of-evidence approach for allergenicity risk assessment of genetically modified crops. It has been argued that protocols used for this assessment should better reflect physiological ...

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Variation in Seed Allergen Content From Three Varieties of Soybean Cultivated in Nine Different Locations in Iowa, Illinois, and Indiana

Soybean (Glycine max) is an important food stock, and also considered an allergenic food with at least eight well characterized allergens. However, it is a less prevalent allergen source than many other foods and is rarely life-threatening. Soybean is incorporated into commonly consumed foods, and therefore, the allergens pose ...

Read more

Functional Classification of Protein Toxins as a Basis for Bioinformatic Screening

Proteins are fundamental to life and exhibit a wide diversity of activities, some of which are toxic. Therefore, assessing whether a specific protein is safe for consumption in foods and feeds is critical. Simple BLAST searches may reveal homology to a known toxin, when in fact the protein may pose no real danger.

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Inter-Laboratory Optimization of Protein Extraction, Separation, and Fluorescent Detection of Endogenous Rice Allergens

In rice, several allergens have been identified such as the non-specific lipid transfer protein-1, the α-amylase/trypsin-inhibitors, the α-globulin, the 33 kDa glyoxalase I (Gly I), the 52–63 kDa globulin, and the granule-bound starch synthetase. The goal of the present study was to define optimal rice extraction and ...

Read more

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