M5 Structural studies in enzymology
Chairs: Isabel Bento (EMBL Hamburg, DE), Matthias Bochtler (IIMCB, Warsaw, PL); Speakers: Richard Neutze (U Gothenburg, SE), + to be confirmed SIG-01

M9 The new role of experiments in the age of protein fold prediction
Chairs: to be confirmed SIG-01,09

M19 Quantum mechanical models for disorder, dynamics, and diffuse scattering
Chairs: Johnathan Bulled (ESRF, Grenoble, FR), Anders Østergaard Madsen (U Copenhagen, DK) SIG-02,14

M25 Supra- molecular inter- actions behind crystal engineering
Chairs: Len Barbour (U Lincoln, UK), Agnieszka Janiak (Adam Mickiewicz U, Poznan, PL) SIG-07,12,13

M33 Nucleation and crystal growth
Chairs: Filipa Castro (U Minho, Braga, PT), José Gavira (IACT-CSIC, Granada, ES); Speakers: Christian Betzel (U Hamburg, DE), Isaac Rodriguez, LGC-CNRS, Toulouse, FR) SIG-01,13

M41 Total scattering and Pair Distribution Function analysis
Chairs: Nicola Dengo (U Insubria, Varese, IT), Adam Sapnik (U Copenhagen, DK) Speakers: Emil Bozin (Institute of Physics Belgrade, RS), Sean Collins (U Leeds, UK) SIG-08

M2 Room temperature and serial crystallography and dynamics
Chairs: Sebastian Günther (DESY, Hamburg, DE), Dean Lang (MAX IV, Lund, SE) Speakers: Thomas Barends (Max Planck Institute for Medical Research, Hamburg, DE), Gisela Brändén (U Gothenburg, SE) SIG-01

M10 Structure- property relationships in materials
Chairs: Volodymyr Pavlyuk (U Lviv, UA), Pavlo Solokha (U Genova, IT) SIG-02,05,12

M18 Novel advances in quantum crystallography
Chairs: Florian Kleemiss (RWTH-Aachen, DE), Anna Krawczuk (U Göttingen, DE) Speakers: Simon Grabowsky (U Bern, CH), Anna Hoser (U Warsaw

M32 Designing the void: structural mastery in advanced porous materials
Chairs: Volodymyr Bon (TU Dresden, DE), Felipe Gandara (ICMM- CSIC, Madrid, ES) Speakers: Valentina Colombo (U Milan, IT), Soumya Mukherjee (U Limerick, IE) SIG-07,12,13

M34 AI in crystallography
Chairs: Arnt Kern (Bruker AXS, DE), Rosanna Rizzi (IC-CNR, Bari, IT) Speakers: Detlef Hofmann (CRS4, Cagliari, IT), + to be confirmed SIG-08,GIG-03

M48 Potential of online courses in crystallography
Chairs: Kamil Dziubek (U Vienna, AT), Gemma de la Flor Martin (KIT, Karlsruhe, DE) Speakers: Stefano Canossa (ETH Zurich, CH), Ilaria Gimondi (CCDC, Cambridge) GIG-01,02,03

M3 Software developments in MX and Cryo-EM including AI / Machine Learning
Chairs: Maria Fando (STFC-UKRI, Oxford, UK), Isabel Uson (IBMB- CSIC, Barcelona, ES) Speakers: Lucrezia Catapano (MRC-LMB, Cambridge, UK), Sergei Grudinin (U Grenoble- Alpes, FR) SIG-01,06

M11 Molecular structures with material properties
Chairs: Marlena Gryl (Jagiellonian U, Krakow, PL), Rebecca Scatena (Diamond LS, Didcot, UK); Speakers: Michelle Ernst (U Zurich, CH), Konrad Szaciłowski (AGH U Krakow, PL) SIG-02

M17 Crystallo- graphic methods to rescue natural and cultural heritage
Chairs: Klaudia Hradil (TU Vienna, AT), Alicja Rafalska-Lasocha (Jagiellonian U, Krakow, PL) Speakers: Koen Janssens (U Antwerp, BE), + to be confirmed SIG-15

M27 Insight into the crystal: crystal forms, isostructurality, symmetry, chirality
Chairs: Petra Bombicz (TTK-MTA, Budapest, HU), Leopoldo Suescun (U Republica, Montevideo, UY) SIG-07,13

M35 Challenges of light sources, neutrons and XFEL
Chairs: Alke Meents (DESY, Hamburg, DE), + to be confirmed SIG-01,06

M42 Quantum mechanics and computational chemistry-based methods of crystallography
Chairs: Anna Hoser (U Warsaw, PL), Horst Puschmann (Durham U, UK) Speakers: Florian Kleemiss (RWTH- Aachen, DE), Anna Krawczuk (U Göttingen, DE) SIG-02,09

M4 Infectious and neglected diseases
Chairs: Nicholas Furnham (LSHTHM, London, UK), Matthias Wilmanns (EMBL Hamburg, DE) Speakers: Giedrė Tamulaitienė (Vilnius U, LT), + to be confirmed SIG-01

M12 Materials for energy storage and conversion
Chairs: Laure Monconduit (U Montpellier, FR), Ihor Zavaliy (Physico- Mechanical Institute NAS, Lviv, UA) Speakers: Valérie Paul- Boncour (ICMPE, Paris, FR), + to be confirmed SIG-12

M20 Aperiodic order and complex superstructures
Chairs: Julia Dshemuchadse (Cornell U, New York, US), + to be confirmed SIG-03

M28 Molecular structure and chemical bonding
Chairs: Christian Lehmann (MPI- Mülheim, DE), Teresa Duarte (U Lisbon, PT) SIG-02,04,07

M36 In situ and operando diffraction; time- resolved techniques
Chairs: Mattia Gaboardi (U Rome Tor Vergata, IT), Boby Joseph (Elettra, Trieste, IT) Speakers: Marco Giorgetti (U Bologna, IT), Umbertoluca Ranieri (MPC, Donostia- San Sebastian, ES) SIG-06

M43 Simulating and predicting structure
Chairs: Lily Hunnisett (CCDC, Cambridge, UK), Jacco van de Streek (Avant-garde Materials Simulation, DE) Speakers: Dzmitry Firaha (Avant-garde Materials Simulation, DE), Sarah Price (U College London, UK) SIG-07,09,13

M1 Nucleic acids, proteins – structures, interactions
Chairs: Martin Hällberg (Karolinska Institutet, Stockholm, SE), + to be confirmed SIG-01

M13 Intermetallic compounds and derivatives
Chairs: Vitaliy Romaka (TU Dresden, DE), Yaroslav Tokaychuk (U Lviv, UA) Speakers: Serena De Negri (U Genova, IT), + to be confirmed

M21 Surfaces, interfaces and ultrathin films
Chairs: Julian Ledieu (U Lorraine, Nancy, FR), Hem Raj Sharma (U Liverpool, UK) Speakers: Yvonne Grunder (U Liverpool, UK), Georg Held (Diamond LS, Didcot, UK) SIG-03

M29 Impact of non-covalent interactions on dynamics in molecular crystals
Chairs: Amy Hall (Durham U, UK), Izabela Madura (Warsaw U Technology, PL) SIG-07,12,13

M37 Advanced and new techniques to study inorganic materials
Chairs: Mariana Klementova (FZU, Prague, CZ), Andrew Stewart (U College London, UK) SIG-04,05

M44 Comparing crystal structures in massive datasets
Chairs: Nicholas Francia (CCDC, Cambridge, UK), Martin Lutz (Utrecht U, NL) SIG-09

M6 Fragment screening and structural based drug discovery
Chairs: Daren Fearon (Diamond LS, Didcot, UK), Tobias Krojer (MAX IV, Lund, SE) Speakers: Manfred Weiss (Helmholtz- Zentrum Berlin, DE), + to be confirmed SIG-01

M14 From crystal structure to magnetic structure
Chairs: Françoise Damay (LLB-CEA, Paris, FR), Khrystyna Miliyanchuk (U Lviv, UA) Speakers: Margarida Henriques (FZU, Prague, CZ), Izabela Sosnowska (U Warsaw, PL)

M22 Short-range order as seen by different techniques
Chairs: Giovanni Orazio Lepore (U Florence, IT), Wojciech Sławiński (U Warsaw, PL) SIG-14

M30 Poly- morphism and phase transitions
Chairs: Alessia Bacchi (U Parma, IT), Szymon Sobczak (Adam Mickiewicz U, Poznan, PL); Speakers: Ivana Brekalo (Ruder Boskovic Institute, Zagreb, HR), Michael Probert (Newcastle U, UK) SIG-05,07,13

M38 Powder diffraction on organic compounds
Chairs: Federica Bravetti (U Frankfurt, DE), Maria Spiliopoulou (UKE, Hamburg, DE) SIG-08

M45 How to… successfully apply for funding
Chairs: Matic Lozinsek (JSI, Liubliana, SI), Marta Morana (U Florence, IT) GIG-01,02,03

M7 Electron diffraction of macromolecules
Chairs: David Owen (Diamond LS, Didcot, UK), Xiaodong Zou (Stockholm U, SE) Speakers: Max Clabbers (Aarhus U, DK), Laura Pacoste (Stockholm U, SE) SIG-01,04

M15 Inorganic crystal structure investigation using electron diffraction
Chairs: Stéphanie Kodjikian (Institut Néel, Grenoble, FR), Louisa Meshi (Ben-Gurion U Negev, Beersheba, IL) SIG-04

M23 Dynamics and disorder in complex systems and/or under extreme conditions
Chairs: Daniel Chaney (ESRF, Grenoble, FR), Ella Schmidt (U Bremen, DE) Speakers: Bryce Mullens (Stoney Brook U, New York, US), Björn Wehinger (ESRF, Grenoble, FR) SIG-11,14

M31 Crystallo- graphy in the world of mechano- chemistry
Chairs: Dritan Hasa (U Trieste, IT), Adam Michalchuk (U Birmingham, UK) SIG-07,13

M39 High-pressure crystallography
Chairs: Anna Makal (U Warsaw, PL), Andrzej Katrusiak (Adam Mickiewicz U, Poznan, PL) Speakers: Karen Friese (Forschungszentrum Jülich, DE), Tomasz Poręba (EPFL, Lausanne, CH) SIG-02,11

M47 Exploiting crystallographic databases in solving, refining, and validating crystal structures
Chairs: Michael Probert (Newcastle U, UK), Suzanna Ward (CCDC, Cambridge, UK) GIG-01,02,03

M8 Cross-method structural studies
Chairs: Eilis Bragginton (Diamond LS, Didcot, UK), Giorgia Fiorini (PSI, Villigen, CH) SIG-01

M16 Crystallo- graphy of minerals in the Universe
Chairs: Przemyslav Dera (U Hawai, Honolulu, US), Tiziana Boffa-Ballaran (Uni- Bayreuth, DE) SIG-05

M24 Disordered and defective molecular systems, effect on chemical properties
Chairs: Hanna Boström (Stockholm U, SE), Stefano Canossa (ETH Zurich, CH) Speakers: Emily Meekel (Kyoto U, JP), Martin Schmidt (Frankfurt U, DE) SIG-13,14

M26 The complex world of multicomponent crystals
Chairs: Kateryna Terebilenko (Kyiv National U, UA), Consiglia Tedesco (U Salerno, IT) SIG-07,13

M40 New developments in electron diffraction
Chairs: Paul Klar (U Bremen, DE), Ute Kolb (U Mainz, DE) Speakers: Paulina Dominiak (Warsaw U, PL), Sergi Plana Ruiz (U Rovira i Virgili, Tarragona, ES) SIG-04

M46 Publishing crystallography
Chairs: Bill Clegg (Newcastle U, UK), Chiara Massera (U Parma, IT) Speakers: Louise Jones (IUCr, Chester, UK), Manfred Weiss (Helmholtz-Zentrum Berlin, DE) GIG-01,02,03