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Stylistic image of how an electron beam from the cryo-microscope hits frozen PSII particles, whereby a reflection is formed that enables the reconstruction of how the atoms are situated. Illustration: Wolfgang Schröder

Details of photosynthesis revealed with record-breaking images

By generating extremely high-resolution images in a cryo-electron microscope, researchers at Umeå University have revealed the positions of hydrogen atoms and water molecules in photosynthesis. This breakthrough provides a new avenue towards uncovering how water is split – a process crucial for life on Earth as well as for scaling up renewable energy systems.

Tan Luong, doctoral student at the Department of Chemistry. Photo: Trung Nguyen

Water films – the silent architects of chemical transformations

Air moisture landing on surfaces of materials forms thin, invisible, water films. These films play crucial roles in Earth’s soils and atmosphere as well as in new technologies. A thesis at Umeå University sheds new light on how this silent architect mediates chemical reactions.

An international research team is exploring how polaritons, light-matter mixed objects, respond to short pulses of light. Illustration: Alexandre Dmitriev

A pulse of light makes polaritons disappear

Polaritons are a peculiar state, a kind of quasi-particles consisting of part-light and part-matter that can bring unexpected abilities to conventional chemical reactions. New research from Umeå University and others reveals that when the polaritons are hit by very short pulses of light they collapse, and from then the reaction will be completely controlled by conventional electronic transitions.

Dr.Luke Clifton at OffSpec, an advanced neutron reflectometer at the ISIS research facility at Harwell, UK, used to measure the interaction of the Bax protein with the membrane (see yellow arrow). Image: STFC (UK)

Neutrons provide unique insight into programmed cell death

Using neutron reflectometry, researchers at the Department of Chemistry, Umeå University, provide new atomic-level understanding of how Bax, a protein that helps remove damaged cells in the body, works. The results of the study, conducted in collaboration with the ESS research facilities in Lund and ISIS in the UK, are published in the journal Science Advances.

An enzyme in the human cell nucleus has been shown to originate from one of the earliest forms of life on Earth. Image: Johnér bildbyrå AB

Traces of ancient organisms in human cells

A team of researchers at Umeå University has discovered that an enzyme in human cells has probably evolved from an ancient single-celled organism. The enzyme's unique properties mean that it could be used as a building block in the design of new enzymes, for example in processing wood raw materials. The discoveries are presented in the scientific journal Science Advances.

The chaperone binding part of YogH (blue) binds around the protein SycH (grey) in a horse shoe shape.

Protein interaction helps Yersinia cause disease

Researchers at Umeå University, Sweden, in collaboration with an international team, have discovered a new mechanism for interaction between two proteins that are vital for the Yersinia pseudotuberculosis bacteria’s pathogenic ability.

Umeå University

Umeå University is a comprehensive university and one of Sweden’s largest higher education institutions with around 38,000 students and 4,600 staff. We have a diverse range of high-quality educational programmes and research within all disciplinary domains and the arts. Umeå University is also where the groundbreaking CRISPR-Cas9 gene-editing tool was discovered, starting a revolution in genetic engineering that led to the Nobel Prize in Chemistry.

The University has an international atmosphere and centres its work around core academic values. Our tightly knit campus makes it easy to meet, collaborate and share knowledge, something that encourages a dynamic and open culture where we celebrate each other’s successes. Umeå University prides itself in offering a world-class educational and research environment and expanding knowledge of global significance, where the sustainable development goals of Agenda 2030 inspire and motivate. We have creative and innovative research environments that offer the best potential for taking on the challenges facing society. Through long-term collaborations with organisations, industry and other higher education institutions, the University is helping northern Sweden become a knowledge region. The societal transformation and the massive investments currently occurring in northern Sweden create complex challenges but also opportunities. Umeå University is focused on conducting research about and within a society in transition and continuing to offer academic programmes for regions that need to expand quickly and sustainably.

Campus Umeå and the Umeå Arts Campus are close to the city centre and next to one of Sweden’s largest and most renown university hospitals. Education is also provided in several other towns, including Skellefteå, Örnsköldsvik, Lycksele and Kiruna. Umeå University is home to the highly ranked Umeå Institute of Design, the environmentally certified School of Business, Economics and Law, and the School of Architecture, the only one in Sweden with an artistic profile. Next door is Bildmuseet, which is Umeå’s contemporary art museum, and Curiosum, Umeå’s science centre. Umeå University is one of Sweden’s five national sports universities, has an internationally leading Arctic Research Centre, and has Várdduo, which is Sweden’s only research unit for Sámi research and indigenous research.