High-Throughput Crystallization Screening Center

Our Expertise – Your Results

The High-Throughput Crystallization Screening Center performs crystal-growth screening experiments in 1,536-well microassay plates for both soluble and membrane biological macromolecules. You send the sample, we do the rest.

December 2019 (updated 11/27/2019)

December 2019 Standard Soluble Screen

  • Reservation Deadline: Friday, December 6th
  • Package Acceptance: Tues Dec 10thThurs Dec 19th
  • Plate Setup:
    • Tues Dec 10thThurs Dec 12th
    • Mon Dec 16thThurs Dec 19th

Please note:

We do not set up samples for screening on Fridays.

During the Holidays, imaging dates of experiments may be offset slightly.

There is no membrane screen scheduled for December.

Click ‘Get a Crystal‘ for details.

From February 2000, the laboratory has been used to set up over 24 million crystallization experiments on >16,000 biological macromolecules. Over 1,000 laboratories worldwide have used and benefited from the service.

In the Literature!

For each crystallization experiment run at the HTCSC, 13,824 images are generated. Currently, a user has to visually inspect each of those images to determine if a crystal has formed or not, a major investment of person-time.

The Machine Recognition of Crystallization Outcomes (MARCO) initiative, a multi-institutional collaboration, has assembled a massive database of annotated images of macromolecular crystallization experiments (including those from the HTCSC). The MARCO initiative has developed an innovative algorithm to apply machine learning to these images, taking a major step forward in automatic image analysis of crystallization experiments. The paper (Classification of crystallization outcomes using deep convolutional neural networks) is just out in PLoS ONE!

We are working to implement this algorithm for HTCSC users for automatic classification of images – stay tuned!

  • At the HTCSC 1,536 different chemical conditions are sampled representing many of the commercially available crystallization screens. Each condition is imaged visually over a period of six weeks. Second Order Non-linear Imaging of Chiral Crystals (SONICC) and UV Two Photon Emitted Fluorescence (UV-TPEF) imaging of crystallization screening also take place to identify biological crystals not picked up visually or those obscured by precipitate.
  • Color images, and SONICC and UV-TPEF images are integrated with the analysis software provided as part of the service. Lead crystallization conditions can be identified and the complete set of results used to analyze the samples solubility phase diagram.
  • Current list of crystallization cocktails.

HTCSC Policies and User Fees

Commercial users please inquire about using the HTCSC by emailing sbowman@hwi.buffalo.edu.


New Formulatrix Rock Imager will be installed soon!

We will be installing a new Rock Imager in for imaging low temperature experiments during December, 2019.  More updates soon!

MacroscopeJ and Catalina macOS

MacroscopeJ for macOS is a 32 bit app and, starting with Catalina, no longer supported by macOS.

We are currently working on a new release which will be fully supported on Catalina.

If you have upgraded to Catalina and need MacroscopeJ immediately to view your images, please contact us at htslab@hwi.buffalo.edu to get access to the beta version of MacroscopeJ that is compatible with Catalina.

Accessing your images via the ftp server.

  • Because of recent changes for both Mac and Windows OS, we recommend using FileZilla to access and transfer images from the ftp server, as it works across platforms.
  • For more details: Analyze Your Results

Online submission form

In May 2018 we started using an online submission form.

  • To make a reservation, please email htslab@hwi.buffalo.edu by the reservation deadline (see above for current dates) to reserve a space in the queue.  Include the following information in your reservation email:
  1. User name and contact information
  2. PI/Institution name and contact information
  3. Number of samples you will be sending, as well as approximate date you will be shipping the sample(s)
  • You will receive an email confirmation from us for your reservation.  Once your sample is ready to ship, please fill out the online submission form including payment information.