MicA, a novel protease adaptor in metabolic shutdown.
Lead Research Organisation:
King's College London
Department Name: Chemistry
Abstract
We propose to study the way cells can completely transform their identity by activating a 'gene expression switch'. Such transformations are important to naturally maintain health e.g. in embryo development which begins with identical cells which then crucially change into the different types of cells that make up a developed human. Conversely, these transformations can cause harm e.g. when cells become cancerous or pathogens invade hosts. A gene expression switch involves a distinct programme of genetic instruction being deactivated and replaced with an alternative that leads to radical transformation of the cell's nature.
In this study my group will examine a newly discovered protein, MicA, which acts an adaptor to the protease ClpC during bacterial spore formation. We have evidence that MicA is involved in metabolic shut-down as the spore becomes dormant. Sporulation is partially responsible for the persistence of 'hospital superbugs' as spores are a long-lived bacterial form, resistant to cleaning agents and thriving in patients depleted of natural gut microflora.
We intend to uncover the detailed molecular shapes of MicA when it is free and bound to ClpC using indirect techniques as they are too small to see even using powerful microscopes. We specialise in measuring protein shapes and the way they fit together by producing them artificially in large quantities, with the help of bacteria which act as our 'protein factories'. We then deduce the proteins' molecular structures by processing their behaviour when we bounce X-rays off them or put them in strong magnetic fields. Each of these techniques has its strengths and weaknesses but our combined approach can yield complementary information filling in the gaps left by using just one of the methods. Collaborating with a microbiologist we will feed information into each others' experiments to build up a mechanistic picture of this gene expression switch in bacterial spore formation. For example, if we identify a mutation in one of our proteins that makes it bind more tightly to its partner our collaborator can make the same mutation within bacteria to test whether it has the predicted effect in living systems.
By solving this jigsaw puzzle we hope to be in a stronger position to design novel antibiotics to attack the increasing problem of bacterial drug resistance and the project also has longer term implications for understanding metabolism and gene expression switches in many aspects of health and disease.
In this study my group will examine a newly discovered protein, MicA, which acts an adaptor to the protease ClpC during bacterial spore formation. We have evidence that MicA is involved in metabolic shut-down as the spore becomes dormant. Sporulation is partially responsible for the persistence of 'hospital superbugs' as spores are a long-lived bacterial form, resistant to cleaning agents and thriving in patients depleted of natural gut microflora.
We intend to uncover the detailed molecular shapes of MicA when it is free and bound to ClpC using indirect techniques as they are too small to see even using powerful microscopes. We specialise in measuring protein shapes and the way they fit together by producing them artificially in large quantities, with the help of bacteria which act as our 'protein factories'. We then deduce the proteins' molecular structures by processing their behaviour when we bounce X-rays off them or put them in strong magnetic fields. Each of these techniques has its strengths and weaknesses but our combined approach can yield complementary information filling in the gaps left by using just one of the methods. Collaborating with a microbiologist we will feed information into each others' experiments to build up a mechanistic picture of this gene expression switch in bacterial spore formation. For example, if we identify a mutation in one of our proteins that makes it bind more tightly to its partner our collaborator can make the same mutation within bacteria to test whether it has the predicted effect in living systems.
By solving this jigsaw puzzle we hope to be in a stronger position to design novel antibiotics to attack the increasing problem of bacterial drug resistance and the project also has longer term implications for understanding metabolism and gene expression switches in many aspects of health and disease.
Technical Summary
In health and disease cells sometimes change their identities by closing down one set of genes and activating another. Studying these tightly-controlled transitions at a molecular level is vital for defining their precise mechanisms and ultimately designing drugs that can interfere with them. A protein, MicA, newly discovered by our collaborator, acts as a novel adaptor for the protease, ClpC, and plays a vital role in effecting metabolic shutdown in a canonical identity change in the tractable model organism Bacillus subtilis, whereby the bacteria become dormant long-lived spores to survive stress conditions. From a genetics perspective this transition has been well-characterised in B. subtilis but the mechanistic gaps that remain can only be filled using the molecular approach proposed here. Forespore metabolism must shut down for the spore to become dormant but the mechanisms for this process are still elusive. MicA is involved in shutting down metabolism in the forespore while components still required to complete the process are supplied by the mother cell through a 'feeding tube'. Here I will investigate this system by solving structures of MicA and its complex with ClpC. I will identify MicA substrates and probe this molecular mechanism using biophysical techniques to learn precisely how MicA effects its function and I propose to identify its substrate/s. In concert with my microbiology collaborators we will shed light on this important part of the sporulation process and investigate the clear likelihood of MicA being a target for antimicrobial development. This work will increase basic understanding of cell differentiation and has specific implications for combating the problem of 'hospital superbugs' which can persist in hardy spore form evading heat and disinfectant.
Planned Impact
The proposed research will have shorter and longer-term impact on Society and the economy:
SHORTER-TERM IMPACT: My move to the chemistry department at King's has already begun to generate new experimental ideas through combining interdisciplinary expertise with local colleagues. This study will thus have impact on research methods in the chemistry community as discussed in my 'academic beneficiaries' section and there will be knock-on effects from any discovery resulting from use of these techniques by other groups. I have a longstanding commitment to Public Engagement, described in more detail in my Pathways to Impact statement and I have plans to disseminate my findings in non-scientific settings through the written and spoken word creating social impact by making the non-scientifically trained public better-informed about science while feeding back their ideas into the creativity of scientific planning. Since I am now at a University that teaches Arts subjects as well as science there is also far more opportunity for creating radically interdisciplinary impact and I am currently meeting with arts colleagues (English, psychology and education departments) to prepare an application for King's Together, a fund specifically designed for this. My last successful BBSRC application included a £10K public engagement budget to fund a pilot science/arts project with London Fine Art Studios to explore common methodology between artists and scientists. Thanks to the goodwill of contributors we managed to maximise this budget beyond our expectations and we have produced six portraits of people who either perform, communicate or facilitate science (including best-selling novelist, gamer and science presenter, Naomi Alderman, and Julian Huppert, physicist, ex-MP). We made wonderful films of the creative process with the artists and sitters discussing their techniques and identifying common ground. We are currently pitching an immersive, multimedia, public exhibition, to major London venues, that will directly engage a large number of people with diverse backgrounds and education. We are requesting a further £10K public engagement budget here to develop our show further, run a programme of educational events including panel discussions and hand-on workshops, and take it on the road following its debut in London so that it will reach communities all over the UK. This is will generate positive publicity for structural biology (exposing new audiences to the beauty of molecular structures) and the research councils.
LONGER-TERM IMPACT: The more information we have, on the detailed workings of the cellular transformation and metabolism, the stronger is our potential to combat disease and promote health and well-being in the population. In this research programme my group will examine aspects of metabolic shutdown in sporulation that have never yet been studied in three-dimensional molecular detail. The results will potentially be significant in providing the basis for novel antibiotic development. This could provide economic benefit to the NHS and health care providers in preventing the use of inappropriate drugs and the development of new, more specific, ones in the challenging area of antimicrobial resistance.
SHORTER-TERM IMPACT: My move to the chemistry department at King's has already begun to generate new experimental ideas through combining interdisciplinary expertise with local colleagues. This study will thus have impact on research methods in the chemistry community as discussed in my 'academic beneficiaries' section and there will be knock-on effects from any discovery resulting from use of these techniques by other groups. I have a longstanding commitment to Public Engagement, described in more detail in my Pathways to Impact statement and I have plans to disseminate my findings in non-scientific settings through the written and spoken word creating social impact by making the non-scientifically trained public better-informed about science while feeding back their ideas into the creativity of scientific planning. Since I am now at a University that teaches Arts subjects as well as science there is also far more opportunity for creating radically interdisciplinary impact and I am currently meeting with arts colleagues (English, psychology and education departments) to prepare an application for King's Together, a fund specifically designed for this. My last successful BBSRC application included a £10K public engagement budget to fund a pilot science/arts project with London Fine Art Studios to explore common methodology between artists and scientists. Thanks to the goodwill of contributors we managed to maximise this budget beyond our expectations and we have produced six portraits of people who either perform, communicate or facilitate science (including best-selling novelist, gamer and science presenter, Naomi Alderman, and Julian Huppert, physicist, ex-MP). We made wonderful films of the creative process with the artists and sitters discussing their techniques and identifying common ground. We are currently pitching an immersive, multimedia, public exhibition, to major London venues, that will directly engage a large number of people with diverse backgrounds and education. We are requesting a further £10K public engagement budget here to develop our show further, run a programme of educational events including panel discussions and hand-on workshops, and take it on the road following its debut in London so that it will reach communities all over the UK. This is will generate positive publicity for structural biology (exposing new audiences to the beauty of molecular structures) and the research councils.
LONGER-TERM IMPACT: The more information we have, on the detailed workings of the cellular transformation and metabolism, the stronger is our potential to combat disease and promote health and well-being in the population. In this research programme my group will examine aspects of metabolic shutdown in sporulation that have never yet been studied in three-dimensional molecular detail. The results will potentially be significant in providing the basis for novel antibiotic development. This could provide economic benefit to the NHS and health care providers in preventing the use of inappropriate drugs and the development of new, more specific, ones in the challenging area of antimicrobial resistance.
Publications
Collins KM
(2023)
Structural Analysis of Bacillus subtilis Sigma Factors.
in Microorganisms
Isaacson RL
(2018)
Editorial: Weak Interactions in Molecular Machinery.
in Frontiers in molecular biosciences
Morris OM
(2021)
Intrinsically disordered proteins: modes of binding with emphasis on disordered domains.
in Open biology
Witheridge A
(2019)
Viewing the Invisible: Exploring common methodology across disciplines.
in PLoS biology
Title | Playlist - Viewing the Invisible |
Description | A playlist of eight short films featuring scientists in discussion with artists while in the process of having their portraits painted/sculpted |
Type Of Art | Film/Video/Animation |
Year Produced | 2019 |
Impact | We have so far had over 8,000 views of our films and they allowed us to pitch an exhibition which took place in The Arcade Bush House in September, an event at the National Portrait Gallery in which an artist painted a famous scientist live in front of an audience and a future exhibition to be held in October 2020 in the European Bioinformatics Institute in Cambridge. The films also prompted several media stories, widespread social media coverage and an academic paper in PLOS Biology. We continue to use the films in grant applications to fund social action projects in schools and will report back on these activities when we are able to fund them. |
URL | https://www.youtube.com/playlist?list=PLun2jODy9M2dccLpMe9Owv5IDzf5sGsDd |
Title | Viewing the Invisible |
Description | Kings College London and London Fine Art Studios have embarked upon an exciting project with the support of the BBSRC (Biotechnology and Biological Sciences Research Council). Viewing the Invisible brings together scientists and artists to explore the similarities in their working methods: Through the close study of shapes and constituent parts, scientists and artists alike, seek to demystify the human identity. This shared approach belies the popularly held belief that science and art reside at polar ends of a spectrum. In fact, it points to the ways in which they work together and can support each other to disseminate research and enrich understanding among a broader public. The outcome (detailed on the next page) is a multi-faceted display including short films, photographs, paintings and text, as well as accompanying activities, which we will display in a series of events around the country. We are holding a launch event in September 2019 at the National Portrait Gallery, potentially aligned with the theme of 'identity' in the Cindy Sherman exhibition. The 1.5 hour event will consist of a portrait painting demonstration from life, direct painting (alla prima) of a female fellow of the Royal Society (Dame Janet Thornton). The scientist will talk about her experimental methodology in conversation with the artist, Ann Witheridge, who will demonstrate the techniques and start of the painting from shapes, values and colour, explaining how in order to be a figuratively successful artist, one has to approach the subject abstractly, thinking of values and temperatures not eyes and mouths! Alongside the live-painting there will be a panel discussion featuring high-profile subjects from our project who will discuss the common ground between scientific and artistic approaches to exploring the underpinnings of identity. |
Type Of Art | Artistic/Creative Exhibition |
Year Produced | 2019 |
Impact | We haven't yet held our exhibition but it is planned for September 2019 in The Arcade in Bush House, a public facing venue on The Strand. We plan to evaluate our impact extensively and will report back in detail next year. |
Description | We have achieved all of the objectives of this grant and are delighted to have been awarded a new BBSRC grant (see further funding section) to tackle the new questions that our research on this grant has raised. Our objectives included solving the exact molecular shape of a new adaptor protein (from a previously entirely uncharacterised gene called YjbA) which recruits a huge cyclindrical 'waste disposal unit' (called ClpC/P) to destroy metabolic machinery in a developing spore in order to 'put the spore to sleep' so that it goes into hardy dormant survival mode. We solved the high-resolution structure of YjbA protein in complex with a part of ClpC using X-ray crystallography. It looks very interesting and exciting and unlike any other known ClpC adaptor. We also characterised the interaction using other types of experiments and solved the structure of a ClpC mutant that is unable to interact with YjbA, to understand the binding interface more fully and add molecular detail to its mechanism of action. In addition to the scientific objectives, we used our public engagement budget to bring our project Viewing the Invisible to fruition. This explored common methodology between artists and scientists via artists painting portraits of science 'influencers' (in the spheres of education, politics, media, academia, industry & policy) while their conversations were filmed. We held an exhibition in The Arcade, Bush House on The Strand in London which attracted over a thousand visitors and had a second exhibition planned for October 2020 at the European Bioinformatics Institute near Cambridge which has been postponed due to the pandemic and we are currently in the process of reviving our exhibition plans. So far Viewing the Invisible has resulted in demonstrable impact via feedback from exhibitions, online films which have attracted over 52K views, an academic paper in PLOS Biology (>9K views), art workshops on science themes, a high-profile event at the National Portrait Gallery and national press coverage. Our scientific progress was somewhat impeded by the pandemic since the labs were closed and the main researcher furloughed but were awarded a no-cost extension until May 2023 to complete the objectives (now achieved) and finish writing up our results for publication (several manuscripts submitted and under review - much more to report in the 2024 reporting window). |
Exploitation Route | In the longer term, understanding the way metabolism shuts down in the developing spore has huge potential for the development of new antimicrobial drugs. Our structure could be used for rational drug design to disrupt the interaction between YjbA and ClpC and prevent metabolic shutdown. Viewing the Invisible videos are now being used as teaching materials in several institutions including sixth form colleges and American Universities. A social action version of this project to increase role-model visibility in underprivileged schools has now been awarded funding as part of a larger new BBSRC responsive mode grant that we have been awarded to follow on from the current grant. |
Sectors | Agriculture, Food and Drink,Creative Economy,Education,Culture, Heritage, Museums and Collections,Pharmaceuticals and Medical Biotechnology |
URL | https://www.youtube.com/playlist?list=PLun2jODy9M2dccLpMe9Owv5IDzf5sGsDd |
Description | This grant enabled us to complete a collaborative portrait-painting project with London Fine Art Studios in which we explored common methodology between artists and scientists. We held an exhibition in The Arcade gallery, Bush House, displaying portraits, objects, picturesque scientific data from this grant and short films (now >52K views on YouTube) which can also be seen here: https://www.youtube.com/playlist?list=PLun2jODy9M2dccLpMe9Owv5IDzf5sGsDd We held our launch event at the National Portrait Gallery in September 2019 in which we live-painted Dame Janet Thornton on stage alongside a panel discussion. We held a month-long free exhibition in a public art gallery, The Arcade, Bush House on the Strand in London, in September 2019, a period culminating in "welcome week," the first week of term for new King's undergraduates in which we held oversubscribed workshops in portrait and science still life drawing. Visitor feedback was outstanding with many reporting opening their minds & changing their practice as a result of our show - we used this for a REF environment case and for KEF reporting. Several write-ups appeared in popular press and some wide-ranging impacts have been reported including a sixth-former in Teeside basing her art A-level coursework around our project - she got 3 A* and is now studying engineering! Our project was a Falling Walls finalist at Berlin Science Festival 2020. For two years our activities were necessarily suspended due to the pandemic but we now have upcoming exhibitions at the Wellcome Genome Campus and in Murray Edwards College, Cambridge and over the next three years we have planned a series of social action events in state secondary schools across the UK, live-painting under-represented scientists to increase role model visibility and inspire the next generation of scientists. The community article that we published in PLoS Biology describes the implementation and impact of this project. It was peer-reviewed by famous artist/scientist David Goodsell who said, "This initiative has discovered an innovative and accessible way to help bridge the gap between the arts and the sciences which will be of great interest to the PLoS community". The paper has had a wide reach with >9000 downloads, several U.S. universities designing course materials around it and invitations for me to present the work in Sicily, Porto, Grenoble, California and Massachusetts. |
First Year Of Impact | 2019 |
Sector | Creative Economy,Education,Leisure Activities, including Sports, Recreation and Tourism,Culture, Heritage, Museums and Collections |
Impact Types | Cultural,Societal |
Description | A cryo-electron microscope for structural biology, including single-particle and tomography, at KCL. |
Amount | £1,000,000 (GBP) |
Funding ID | BB/W019329/1 |
Organisation | Biotechnology and Biological Sciences Research Council (BBSRC) |
Sector | Public |
Country | United Kingdom |
Start | 08/2022 |
End | 07/2023 |
Description | A dual DLS and SEC-MALS instrumentation to characterize protein oligomerization for structural and mechanistic biology |
Amount | £205,223 (GBP) |
Funding ID | BB/V01966X/1 |
Organisation | Biotechnology and Biological Sciences Research Council (BBSRC) |
Sector | Public |
Country | United Kingdom |
Start | 11/2021 |
End | 11/2022 |
Description | Bacillus Subtilis Chaperone/protease Mechanisms In Metabolic Shutdown |
Amount | £509,478 (GBP) |
Funding ID | BB/X001415/1 |
Organisation | Biotechnology and Biological Sciences Research Council (BBSRC) |
Sector | Public |
Country | United Kingdom |
Start | 01/2023 |
End | 12/2025 |
Description | Developing technology readiness pathways toward creating high performance recombinant spider silks |
Amount | £30,000 (GBP) |
Organisation | PLuS Alliance |
Sector | Private |
Country | Global |
Start | 06/2021 |
End | 06/2022 |
Description | Isothermal titration calorimetry instrumentation for structural biology, biological mechanisms and drug discovery |
Amount | £193,698 (GBP) |
Funding ID | BB/T01752X/1 |
Organisation | Biotechnology and Biological Sciences Research Council (BBSRC) |
Sector | Public |
Country | United Kingdom |
Start | 10/2020 |
End | 09/2021 |
Description | B. subtilis sporulation - structure/function collaboration with Prof. Amy Camp |
Organisation | Mount Holyoke College |
Country | United States |
Sector | Academic/University |
PI Contribution | This is a research collaboration. We Skype every two weeks to update each other on research findings. From our end we solve structures and interactions of proteins using biophysics techniques. |
Collaborator Contribution | The Camp lab mostly perform in vivo microbiology work in Bacillus subtilis. In general they identify important proteins via genetic screens. We characterise these using structural and biophysical methods. Together we generate hypotheses which can then be tested in vivo by them and in vitro by us. Two people in my lab were able to spend time in the Camp lab thanks to BBSRC ITAS award and they have brought back important skills of working with B. subtilis such that we can now produce lysate important for experiments in our lab. |
Impact | We have published 2 papers together so far and generated two BBSRC project grants. We have many other papers in preparation. We have both spoken at European Spores Conference about our collaborative work. |
Start Year | 2015 |
Description | Viewing the Invisible |
Organisation | London Fine Art Studios |
Country | United Kingdom |
Sector | Private |
PI Contribution | The collaboration is at an early stage but we have recently secured funding from the BBSRC to go forward with the project. It will explore and demythologise common methodology/ways of thinking between Arts and Sciences and produce a touring multimedia exhibition involving videos and portraits of scientists. |
Collaborator Contribution | Our partners are portrait painters trained in traditional methods. They bring this expertise along with a wealth of experience in curating exhibitions, working with partners in other fields etc. |
Impact | None yet - we have had several meetings - the project is still in planning stages |
Start Year | 2015 |
Description | 2021 Judith Howard Lecture Prize Winner |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | National |
Primary Audience | Postgraduate students |
Results and Impact | We are very pleased to announce Dr Rivka Isaacson of King's College London as the 2021 (and 8th) Judith Howard Lecturer. The Howard Lecture is an annual lecture which celebrates world-leading mid-career academics working in the biophysical sciences. Professor Judith Howard CBE FRS was one of the original founders of the BSI and was instrumental in establishing the Wolfson Laboratories on the top floor of the Chemistry Department, an interdisciplinary research hub home to many BSI researchers. Judith joined Durham as a Professor of Crystallography in 1991 and became the first female head of a five-star chemistry department nationally. She has built instruments that allow scientists to apply techniques to prove theories experimentally and advance the field of X-ray crystallography. She developed low-temperature X-ray and neutron diffraction methods to explore electron density distributions, chemical bonding descriptors and magnetic properties in molecules more precisely. To mark her formal retirement from the University the Howard lecture was established in her name, and celebrates up-and-coming researchers in the biophysical sciences from all over the world. |
Year(s) Of Engagement Activity | 2021 |
URL | https://www.durham.ac.uk/research/institutes-and-centres/biophysical-sciences-institute/about-us/new... |
Description | Babbage from The Economist |
Form Of Engagement Activity | A broadcast e.g. TV/radio/film/podcast (other than news/press) |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Media (as a channel to the public) |
Results and Impact | I appeared on 'Babbage' which is the weekly science and technology podcast from The Economist celebrating Rosalind Franklin on what would have been her 100th birthday had she not died tragically young. The episode was called 'Rosalind Franklin-her discoveries are more relevant than ever' and reached a wide international listening audience. |
Year(s) Of Engagement Activity | 2020 |
URL | https://www.economist.com/podcasts/2020/09/16/rosalind-franklin-her-discoveries-are-more-relevant-th... |
Description | Gin and Topic |
Form Of Engagement Activity | A broadcast e.g. TV/radio/film/podcast (other than news/press) |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Public/other audiences |
Results and Impact | Hendrick's Midsummer Solstice & Nanoscale Molecular Machinery Season 2, Ep. 7 Nanoscale Molecular Machinery or as Áine put it 'ya what?!' This week we're talking to Dr Rivka Isaacson, Associate Dean for Doctoral Studies in the Faculty of Natural & Mathematical Sciences and Reader in Chemical Biology in the Department of Chemistry at Kings College London, who's going to explain all and try to answer 'How can we view the invisible?'. And of course, we'll be drinking! To help us learn we've got some large glasses of Hendrick's Midsummer gin. Cheers! |
Year(s) Of Engagement Activity | 2021 |
URL | https://shows.acast.com/6169481116af5700128250d4/episodes/616948184d378a001232b722 |
Description | Speaker invitation to a workshop on art/science collaboration for ECRs - funded by Research England |
Form Of Engagement Activity | Participation in an activity, workshop or similar |
Part Of Official Scheme? | No |
Geographic Reach | Regional |
Primary Audience | Professional Practitioners |
Results and Impact | I was invited to the University of York to present my experiences in collaborating with artists to widen my impact and about applying for funding to support these activities. There were artists and scientists speaking and various interactive activities to engage the early career researchers and give them opportunities to make connections. It was an inspiring event - I met a lot of interesting people and we shared ideas. |
Year(s) Of Engagement Activity | 2022 |
Description | The Know Show |
Form Of Engagement Activity | A broadcast e.g. TV/radio/film/podcast (other than news/press) |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Public/other audiences |
Results and Impact | In this TKS episode, Dr. Rivka Isaacson proves that there is plenty of room for the arts and sciences to come together to solve different problems, and produce new research, by complementing each other and without either feeling underappreciated. She encourages young people to embrace their individuality, engage with various people from society, and create a niche for themselves in life that they want to share. |
Year(s) Of Engagement Activity | 2021 |
URL | https://theknowshow.net/2021/06/15/what-do-artists-and-scientists-look-like/ |
Description | Viewing the Invisible Exhibition |
Form Of Engagement Activity | Participation in an activity, workshop or similar |
Part Of Official Scheme? | No |
Geographic Reach | Regional |
Primary Audience | Public/other audiences |
Results and Impact | We held an exhibition for 3 weeks which included portraits, short films and objects, exploring common working methods between artists and scientists. We had ~1000 visitors, many of whom filled in a questionnaire about their experience. All responses were positive, many scientists said they were inspired to cultivate their artistic side e.g. by taking a drawing or sewing class, artists said they were motivated to develop collaborations with scientists to take their art in new directions, and teachers now plan to help their pupils see the creativity in science and the technical side of art so that the two cultures are less bifurcated. |
Year(s) Of Engagement Activity | 2019 |
URL | https://www.kcl.ac.uk/events/viewingtheinvisible |