NCCAT Proposal Central

Submit an access proposal to NCCAT through our Proposal Central portals below. We offer Instrumentation access through our General User Program (GUP), Cross-Training through our cross-Training Program (TP), and Screening access through our Grid Preparation and Screening program (GPS).



Titan Krios access


BAG access

Block Allocation Group

Apply for BAG access here.



Embedded Training

Embedded Cross-Training

Apply for TP1 access here.


Facility Manager Training

Facility Manager Cross-Training

Apply for TP2 access here.



Screening access

Grid preparation and screening

Apply for GUP3 access here.


Chameleon access

Blot free vitrification

Apply for GUP2 access here.

Accepting User Proposals to the National Center for CryoEM Access and Training (NCCAT)

The GUP1 access program supports single particle cryoEM data collection on one of our existing Titan Krios instruments using dedicated NCCAT instrumentation using a Gatan K3 direct-electron detector. The GUP2 cycle supports use of Chameleon (the commercialized version of Spotiton) with a feedback screening report. Lastly, the TP cycle supports embedded researcher cross-training (TP1) and facility manager cross-training (TP2). Additional classes of proposals open based on capacity and availability.

We have a quarterly call for proposals. Deadlines are: | July 1, 2023 for 2023-cycle4 | Oct 1, 2023 for 2024-cycle1 | Jan 1, 2024 for 2024-cycle2 | April 1, 2024 for 2024-cycle3 | July 1, 2024 for 2024-cycle4 |Oct 1, 2024 for 2025-cycle1 | Jan 1, 2025 for 2025-cycle2 | .

NCCAT is committed to an open and transparent application process to ensure equal-opportunity nationwide access.  

For more information please contact nccatuseroffice [at] .

Other Access


Rapid Krios access

Rapid Krios access

Apply for RAP1 access here.