The Southeast Regional Collaborative Access Team (SER-CAT) is an organization consisting of 21 member institutions, formed in 1997 to provide third generation x-ray capabilities to macromolecular crystallographers and structural biologists in the southeastern region of the U.S. 

Emphasis is placed on de novo SAD/MAD structure determination, high-resolution structural analyses, large unit cells, drug design, structural genomics, soft X-ray data collection and next-generation beamline automation. SER-CAT is located at the Advanced Photon Source, Argonne National Laboratory, and is operated by the University of Georgia, with Professor Bi-Cheng Wang as Director.

Please peruse the pages of our website to find out more about SER-CAT and how we are "shining a new light" on protein crystallography.  Have a look at The SER-CAT Spectrum, our newsletter, to learn about recent breakthroughs.  As always, your comments and suggestions are welcome. 

Thank you for visiting! 


*News and Announcements*

General Information



Associate Memberships


Associate memberships are now available on a yearly basis with no capital; investment or long-term contractual commitment. Associate memberships are available to both academic and industrial users and provide full access to SER-CAT's outstanding Remote Access program at an attractive cost.


For more information, please contact SER-CAT Administrative Coordinator, Ms. Kathy S. Savage at



* * *




 The 11th Annual SER-CAT Symposium


The joint 44th Mid-Atlantic Macromolecular Crystallography Meeting and the 11th Annual SER-CAT Symposium will be held at the University of Maryland, Shady Grove campus in Rockville, MD on April 23 - 26, 2014.


For more detailed information, please check the link:


Past Symposia


The 10th Annual SER-CAT Symposium was held on March 15, 2013 at the Florida State University Chemical Sciences Laboratory Auditorium on the campus of Florida State University, Tallahassee, Florida. The Symposium was well organized by the local organizers, Dr. Hong Li, Dr. T "Soma" Somasundaram. More than 70 faculty, speakers, students and sposonrs attended the symposium. During the Symposium, participants shared their most recent research discoveries on structural biology and crystallography. The Symposium inclued 7 oral presentations, and 8 posters, and an afternoon workshop on data collection strategy hosted by SER-CAT beamline  scientists. Additional  information on the talks  presented is included in the 2013 Symposium Program Booklet.


2013 group


2013 SER-CAT Symposium Participants

Florida State University, Talahassee, Florida

SER-CAT extends its sincere gratitude to Drs. Hong Li, T "Soma" Somasundaram, and Florida State University for hosting such a successful event. Thanks also to all the attendees and speakers and participants for their support at the Symposium.

SER-CAT Annual Executive Board Meeting was held on Saturday,  March 13, 2013, at the Doubletree by Hilton Talahassee, Florida.

* * *


CONGRATULATIONS to SER-CAT's 2013 Award Winners!!

Dr. Susan Buchanan, NIDDK-NIH received 2013 SER-CAT Outstanding Science Award for her work on “Structural basis for iron piracy by pathogenic Neisseria"

.2013 award winner

Susan Buchanan (left) receives the 2013 SER-CAT

Outstanding Science Award from B.C. Wang

Dr. Matthew J. Schellenberg, NIEHS-NIH, received 2013 SER-CAT Young Investigator Award for his work on “Repair of 5'-topoisomerase II-DNA adducts by mammalian tyrosyl-DNA phosphodiesterase 2”

2013 young investigator award

Matthew J. Schellenberg  (left) receives the 2013 SER-CAT

Young Investigator Award from B.C. Wang

SER-CAT is pleased to recognize Dr. Buchanan and Dr. Schellenberg for their scientific achievements, and congratulates them again for receiving the 2013 science awards. A special thanks also to all of you who submitted nominations for this year's  presentations.

Click here for a list of previous SER-CAT Award Winners

* * *

2013 SER-CAT Awards nomination forms are available at the following links:

2014 SER-CAT Outstanding Science Award

2014 SER-CAT Young Investigator Award



New Rayonix MX300HS

The detector is fast (10Hz) however 22BM is flux limited so collecting data at 10 Hz is not recommended.

The best data is collected in shutterless mode which has been incorporated into SERGUI.

For example, a 720 image data set (1 degree images, one second exposure using 1Ĺ X-rays) on crystals of bovine trypsin was collected in 12 minutes.

The data were autoprocessed with cmdXDS.

The scaled structure factors were then used with the PHENIX AutoSol workflow to solve the S-SAD (14 sulfurs, 224 residues) 1 Ĺ X-rays. PHENIX solved the structure, HySS found the 14 sulfurs in the protein, 2 sulfate molecules and a bound calcium.  (delta F" for sulfur is 0.23 and calcium is 0.626 at this wavelength).

PHENIX solved the structure, HySS found the 14 sulfurs in the protein, 2 sulfate molecules and a bound calcium.  (delta F" for sulfur is 0.23 and calcium is 0.626 at this wavelength).

A total of 202 of the 224 residues were fit and the current model after AutoSol has an F-factor 0.2054 (Rfree = 0.2314).

A data collection guide has been prepared and may be downloaded by clicking the following link:

Rayonix MX300HS Users Guide

Please look it over since there are several changes in what you will need to do to collect data and process data with the new detector.

* * *

HKL2000 now availabel for the MX300HS

A new version of HKL2000 that can process the data from the MX300HS detector is available for download from HKL Research.  Please contact them for download instructions.  You will alos need to get an updated cr_info file.

* * *

Data Archiving

Users should avoid bringing firewire drives with metal cases for use at the beamlines.

The metal, being a wonderful heat conductor, is causing thermal failure because of the long download time required for data collection.

* * *

SER-CAT Automounters

Both BM and ID Robots are fully commissioned. All first time robotics users must contact Elizabeth Kolbusz (SER-CAT's User Support Coordinator) prior to their visit.

The ALS Style magnetic caps are available from Hampton Research, P/N HR4-779

The 18mm Mounted litholoops are available from Molecular Dimensions.

The dry shipping dewars compatible with SER-CAT puck holder are from Taylor-Wharton (Model: CX100 or CXR100). The product vendor is:

SER-CAT's robotic pucks, puck holder and tools are available from the University of Georgia Instrument Shop, 955 East Whitehall Rd., Athens, GA 30602. Please Contact Mr. Lewis Fortner via e-mail ( or  Fax (706-542-7921) for pricing and availability.

* * *


As a service to our Members, SER-CAT is pleased to provide helpful links for the following information:

Lease and/or Sale Opportunities Available by Members


Positions Available at SER-CAT and/or Member Institutions


Other Membership Announcements


* * *


Historical Presentation of SER-CAT  SER-CAT celebrated its 10th year Anniversary in 2007. In honor of this special occasion, SER-CAT's director Dr. Bi-Cheng Wang created a historical presentation highlighting many SER-CAT's exciting achievements. You are invited to view this PDF slideshow entitled, "SER-CAT: The First 10 Years" to see the chronological history of our development, including the important ribbon cutting ceremony held at the APS in 2002. We sincerely express our gratitude to each of you who supported SER-CAT's growth, and look forward to many more productive years ahead!

The Beamline dedication ceremony in Argonne, IL

Celebrating the official opening of SER-CAT's 1st beamline, October 2002, APS, ANL

   Photo of the Advanced Photon Source in Argonne, IL.


The SER-CAT Approach!


We would like to share another slide presentation given by SER-CAT Director Dr. Bi-Cheng Wang at the 9th International Conference on Biology and Synchrotron Radiation in Manchester, England, entitled, "Remaining Challenges in Long Wavelength Phasing: The SER-CAT Approach" (PDF). This presentation highlights SER-CAT's work on data collection at all possible wavelengths, including sulfur phasing.


* * *



SER-CAT Featured on World Business Review


SER-CAT was featured on the TV program World Business Review, which aired on the Bravo Network in February 2005. You may view the featured segment in streaming audio following the links below. If you would like a copy of this valuable resources to distribute locally ob CD or DVD, please contact Lily Li at


Windows Media video (300K)
Real Player video (300K)