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International Union of Biochemistry and Molecular Biology

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An international non-governmental scientific union that advances biochemistry and molecular biology through research, education, collaboration, nomenclature, meetings, fellowships, and publishing.

Last updated August 22, 2026

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Overview

The International Union of Biochemistry and Molecular Biology, commonly known as IUBMB, is an international non-governmental scientific organization devoted to the development of biochemistry and molecular biology. It brings together national and regional biochemical societies, research councils, and academies, and works to strengthen the discipline through scientific cooperation, educational activity, professional exchange, and internationally consistent standards. The organization was formally established in 1955 as the International Union of Biochemistry, or IUB, at the third Congress of Biochemistry in Brussels. Its creation followed several years of international efforts to give biochemistry a distinct representative body within the International Council for Science. Those efforts were stimulated by the postwar need to reconnect scientists and by the rapid growth of biochemistry as an independent field. The union adopted its current name in 1991 to reflect the increasingly central role of molecular biology in the organization’s scientific scope. IUBMB operates through a network of adhering and associate adhering bodies. These members represent dozens of countries and regions, while regional organizations such as the Federation of Asian and Oceanian Biochemists and Molecular Biologists, the Federation of European Biochemical Societies, and the Pan-American Society for Biochemistry and Molecular Biology provide additional channels for cooperation. The union’s work is international in orientation, with particular attention to countries and scientific communities where biochemistry and molecular biology are still developing. Its principal activities include a triennial Congress of Biochemistry and Molecular Biology, focused scientific meetings, sponsored symposia, award lectures, travel grants, and educational programs. Fellowships support international laboratory exchanges and research training. The Wood Whelan Research Fellowships allow researchers to undertake a defined project in a laboratory in another country, while Mid-Career Fellowships support mobility and development among early-career investigators. Through a collaboration with the American Society for Biochemistry and Molecular Biology, the PROLAB program has also supported opportunities for Latin American students to train in the United States. Tang Fellowships and related educational initiatives extend the organization’s emphasis on capacity building. IUBMB also has an important standards-setting role. It publishes recommendations for biochemical nomenclature, including the internationally used Enzyme Commission classification system. The system originated in work undertaken at the 1955 International Congress of Biochemistry and has been developed jointly or cooperatively with the International Union of Pure and Applied Chemistry in relevant areas. The addition of translocases in 2018 brought the enzyme classification system to seven major classes. The union is associated with a portfolio of scientific journals, including IUBMB Life, Biochemistry and Molecular Biology Education, BioFactors, Biotechnology and Applied Biochemistry, Molecular Aspects of Medicine, and Trends in Biochemical Sciences. Through these activities, IUBMB functions less as a commercial consumer brand than as a professional and scientific institution whose identity is expressed through global membership, authoritative standards, convening power, training opportunities, and scholarly communication.

History

IUBMB developed from the international movement to establish biochemistry as a formally recognized scientific discipline. The immediate background was the first Congress of Biochemistry, held in Cambridge in 1949 and organized by the Biochemical Society. The meeting was encouraged by Sir Hans Adolf Krebs and helped reconnect biochemists who had been separated by the Second World War. It also demonstrated that biochemistry had become sufficiently mature and internationally distributed to require its own representative structure. At the final session of the 1949 congress, an International Committee of Biochemistry was established. Its membership consisted of 20 scientists from 14 countries, and its stated objective was to obtain recognition from the International Council for Science for an international body representing biochemistry. The committee spent the following years developing the institutional and international arrangements needed for a permanent union. The third Congress of Biochemistry, held in Brussels in 1955, marked the decisive institutional step. The International Union of Biochemistry was formed during the congress and was admitted to the International Council for Science. In addition to representing the field internationally, the new union began contributing to scientific coordination and to the development of shared biochemical terminology. Work on enzyme classification and nomenclature became one of its most enduring technical contributions; the original classification framework was developed in the period surrounding the 1955 congress. During the following decades, the union expanded beyond representation of classical biochemistry. Molecular biology increasingly became inseparable from the study of enzymes, nucleic acids, proteins, metabolism, and cellular regulation. In 1991, the organization changed its name to the International Union of Biochemistry and Molecular Biology, formally recognizing this broader scientific remit. The modern IUBMB works through national and regional scientific bodies. Its membership structure includes adhering bodies and associate adhering bodies, generally represented by biochemical societies, national research councils, or academies of sciences. Regional partners include the Federation of Asian and Oceanian Biochemists and Molecular Biologists, the Federation of European Biochemical Societies, and the Pan-American Society for Biochemistry and Molecular Biology. This structure enables the union to coordinate activities across established research systems while directing particular attention to places where the discipline is still developing. Meetings remain central to the organization’s work. IUBMB organizes a triennial congress and supports annual focused meetings, symposia, lectures, and related scientific gatherings. Its educational mission is implemented through fellowships, travel support, and laboratory-exchange programs. The Wood Whelan Research Fellowships, named for former presidents Harland G. Wood and William Joseph Whelan, support international research visits. Mid-Career Fellowships provide comparable mobility opportunities for developing investigators, while the PROLAB collaboration with the American Society for Biochemistry and Molecular Biology has supported Latin American trainees seeking laboratory experience in the United States. Tang Fellowships and other educational programs further extend the organization’s training mission. IUBMB’s standards work has also continued to evolve. Its enzyme nomenclature recommendations are maintained as a common reference for researchers, educators, and scientific publishers, in some cases in cooperation with IUPAC. The classification system was expanded with the addition of translocases in 2018, producing seven enzyme classes. Alongside nomenclature, the union has maintained connections with scholarly publishing through journals such as IUBMB Life, Biochemistry and Molecular Biology Education, BioFactors, Biotechnology and Applied Biochemistry, Molecular Aspects of Medicine, and Trends in Biochemical Sciences. Today, IUBMB is an international network serving biochemists and molecular biologists through representation, standards, scientific exchange, education, fellowships, and publications. Its historical development reflects the institutionalization of biochemistry after the Second World War and the subsequent convergence of biochemical and molecular biological research.

  • 2018

    Translocases added to enzyme classification

    [1]

    The enzyme nomenclature framework was expanded through the addition of translocases, resulting in seven recognized enzyme classes.

  • 1991

    Name changed to IUBMB

    [1]

    The union adopted the name International Union of Biochemistry and Molecular Biology to reflect the expanding relationship between the two fields.

  • 1955

    International Union of Biochemistry formed

    [1]

    At the third Congress of Biochemistry in Brussels, the International Union of Biochemistry was established and admitted to the International Council for Science.

  • 1949

    First Congress of Biochemistry

    [1]

    The Biochemical Society organized the first Congress of Biochemistry in Cambridge. The meeting helped reconnect researchers after the Second World War and advanced the case for an international body representing biochemistry.

  • 1949

    International Committee of Biochemistry established

    [1]

    A 20-member committee representing 14 countries was created to seek recognition for biochemistry within the International Council for Science and to prepare a permanent international union.

Products and positioning

A global coordinating and capacity-building organization for the biochemical and molecular biology communities, combining scientific representation with education, mobility, nomenclature standards, meetings, and scholarly publishing.

  • Scientific congress

    Congress of Biochemistry and Molecular Biology

    IUBMB’s principal recurring international congress, held on a triennial schedule. It provides a large forum for presenting research, exchanging ideas across national and regional communities, and connecting scientific discussion with the union’s education and professional-development mission.

  • Scientific events

    Focused meetings and symposia

    The union sponsors annual focused meetings and additional symposia addressing topics in biochemistry and molecular biology. These smaller-scale activities complement the triennial congress by concentrating on specific research areas and supporting international collaboration.

  • Research fellowship

    Wood Whelan Research Fellowships

    A mobility and training program named for former IUBMB presidents Harland G. Wood and William Joseph Whelan. It enables researchers to travel to a laboratory in another country and conduct work on a defined scientific project, supporting international skills development and collaboration.

  • Research fellowship

    Mid-Career Fellowships

    Fellowships designed to provide international research and training opportunities for early-career or mid-career investigators. They reflect IUBMB’s emphasis on scientific mobility and the strengthening of biochemical and molecular biology communities worldwide.

  • Training fellowship

    PROLAB fellowships

    A fellowship initiative operated in collaboration with the American Society of Biochemistry and Molecular Biology. The program provides Latin American students with opportunities to undertake study or laboratory training in the United States.

  • Scientific standards · 1955

    Biochemical nomenclature recommendations

    IUBMB develops and publishes recommendations for biochemical terminology and classification. Its enzyme nomenclature system, maintained in cooperation with relevant international scientific bodies, provides a standardized framework used in research, education, databases, and publishing.

  • Scientific publishing

    IUBMB-associated journals

    IUBMB is associated with a group of journals spanning biochemistry, molecular biology, education, biotechnology, medicine, and related biomolecular sciences. The publishing program extends the union’s mission by disseminating research and supporting education and professional communication.

Brand decisions

  • 2018

    Addition of translocases to enzyme nomenclatureOther

    Background

    Developments in enzyme science required the international classification framework to recognize translocases as a distinct class.

    Action taken

    IUBMB’s enzyme classification system was expanded to include translocases.

    Aftermath

    The nomenclature scheme comprised seven enzyme classes and continued to serve as a common international reference.

  • 1991

    Expansion of the union’s scientific identityStrategy

    Background

    Molecular biology had become deeply integrated with biochemical research, making the original organizational name narrower than the union’s scientific remit.

    Action taken

    The organization changed its name from International Union of Biochemistry to International Union of Biochemistry and Molecular Biology.

    Aftermath

    The new name formally positioned the union as a representative body for both interconnected disciplines.

  • 1955

    Establishment of an international biochemical unionStrategy

    Background

    Postwar scientific reconstruction and the rapid development of biochemistry created a need for an international body capable of representing the discipline and coordinating cross-border scientific activity.

    Action taken

    The International Union of Biochemistry was formed at the Brussels Congress of Biochemistry and admitted to the International Council for Science.

    Aftermath

    The organization became an international platform for scientific representation, nomenclature, meetings, education, and cooperation in biochemistry.

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