ACA: The Structural Science Society is returning to an in-person gathering for the 72nd annual meeting. Scientists interested in biological, chemical, and material structures will travel to the heart of Portland, Oregon, July 29 - August 3, 2022.

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Workshops are designed for individuals in the same field, discipline or interests to network and learn the most recent developments and techniques. Workshops require registration and an additional registration fee to attend (which is not included in the Annual Conference registration). You must be registered for the 2022 ACA Annual Conference in order to register for a pre-conference workshop.

Registration is required to attend a workshop and space is limited!  Register today!
Featured Workshops @ ACA2022
  WK1: Applications of Small Angle Scattering to Structural Biology: An Introduction
WK2: Crystallographic and cryo-EM Structure Solution with Phenix
WK3: Cryo-Electron Tomography: State of the Art Methods
WK4: Hands-on Single-Particle Cryo-EM Data Analysis with Cryo EDU
WK5: CryoEM Sample Preparation Training using Center Merit Badges
WK6: Advanced Software Tools for Single Crystal Diffraction
WK7: Visualizing Structure
WK8: Microcrystal Electron Diffraction (MicroED)

Call for Submissions

The American Crystallographic Association (ACA) is in the preliminary stages of creating a online portal of videos that aim to help the ACA community promote and develop crystallographic literacy in the classroom and beyond.  Find out more...  


Introducing ACA: The Structural Science Society

After over a year of development we are excited to launch the new ACA logo incorporating "The Structural Science Society".  The ACA has always been a home for structural scientists and as the science develops and grows so are we.  ACA Vice President Cora Lind-Kovacs summed up the change perfectly:

"As we continue to push for new frontiers, combining data obtained by such methods with traditional crystallographic diffraction or other scattering techniques holds tremendous potential, and the addition of “The Structural Science Society” shows that the ACA is committed to providing a place that brings together all scientists that are pursuing atomic level structural analysis."  

Read the announcement and find out more about the logo.  


Join or Renew Today!


Crystallography and structural science have been and continue to be on the forefront of major discoveries in the life sciences, medicinal chemistry, and materials science. The American Crystallographic Association, Inc. (ACA) is the home for over 1,000 structural scientists all over the world who are united by the common purpose to “promote interactions among scientists who study the structure of matter at atomic (or near atomic) resolution”.

The annual ACA membership renewal period for 2022 is open and new members are always welcome to join! Annual dues allow us to share our scientific passions and accomplishments through different approaches, including the annual conference, publications and educational outreach.

Membership in the ACA is open to any person who is actively interested in the purposes of the Association. The ACA welcomes everyone from students to retirees. All of our members contribute to the life and vigor of the Association.

ReleXions: Spring 2022



Education & Outreach

Crystal growing competitions are wonderful events that get kids excited about science.  We are proud to support a number of crystal growing competitions around the US.  Find out more...

(pictured above: STARS Teammates from the Cobb County Crystal Growing Competition)


ACA Statement on the Russian Invasion of the Ukraine

On March 14, 2022 ACA issued a statement concerning the situation in the Ukraine.