The American Crystallographic Association proudly announces the Class of 2025 ACA Fellows—an exceptional group of scientists whose groundbreaking research, impactful teaching, and dedicated service have shaped the field of crystallography and structural science in profound ways. This year’s honorees represent a remarkable spectrum of contributions, from advancing foundational methods and developing revolutionary technologies to championing education, mentoring, and equity across the global scientific community.
Please join us in congratulating:
- Graciela Diaz de Delgado (Universidad de Los Andes, Venezuela), internationally recognized for her leadership in Latin American crystallography, instrumental IUCr service, and deep commitment to graduate education and community building.
- Zygmunt Derewenda (University of Virginia), whose distinguished research in molecular physiology and structural biology is matched by decades of mentoring and service across the ACA and global structural science community.
- Tamir Gonen (UCLA/HHMI), the pioneering mind behind MicroED, whose innovative methods have revolutionized molecular structure determination and opened new frontiers in cryo-EM and structural biology.
- Igor Levin (NIST), for his influential work on materials structure and data science, and for driving forward national and international collaborations in multimodal structural characterization.
- Zbyszek Otwinowski (UT Southwestern), for seminal contributions to X-ray data processing and crystallographic software development, including the foundational HKL suite used worldwide.
- Sean Parkin (University of Kentucky), a prolific crystallographer and educator whose work spans hundreds of structures, critical methodology papers, and tireless editorial and community service.
- Bernard D. Santarsiero (University of Illinois Chicago), a passionate advocate for diversity and inclusion in science, whose structural work supports therapeutic discovery and societal impact.
- Charlotte Stern (Northwestern University), whose decades-long career in service crystallography has empowered countless collaborators, students, and research teams with structural insight and educational mentorship.
- Kraig A. Wheeler (Whitworth University), a leader in crystallographic education and crystal engineering, whose work fosters undergraduate research and structural literacy at the national level.
Each of these individuals embodies the spirit of the ACA Fellows program—scientific excellence coupled with service and leadership. We thank them for their contributions and are honored to recognize their achievements.
