Type 'PDB ID' or 'Keyword' of structure, and click the 'Search' button.
The 'Random' button is to show random result page.
For more detailed description of search help, go to help page.

What's new?
How to use STAP2?
What is the STAP2?
  • STAP2 is a database that stores the refined NMR structure.
Goal of STAP2
  • The goal of the STAP2 is to provide a high quality of refined structure and its various structural analysis for almost all of NMR structures obtained from PDB (Protein Data Bank).
Expanded datasets
  • STAP2 now has most of NMR structures in PDB (2,405 to 10,583 structures, as of June 2015).
New method
  • Application of newly developed NOE-like distance restraint generated from initial NMR structure.
  • Instead NOE distance restraint, it prevents structural dislocation during refinement.
Various structural analysis
  • Various structural analysis of refined structure with visual elements.
  • 3D structure view, secondary structure scheme, tabular (score table) and graphical scores (radar charts).
PDB ID Search
  • Please select the 'PDB ID' in 'Field selection' and enter the PDB ID of the NMR structure into search box.
  • PDB ID should contain two or more characters (ex. '3g' or '3gb1' ).
Keyword Search
  • If you do not have a PDB ID, you can find refined structure through a several keyword search.
  • For example, if you select 'Classification' in keyword field and enter 'membrane' into search box, you can see the list of membrane associated structures.
  1. Yang, J.S., Kim, J.H., Oh, S., Han, G., Lee, S. and Lee, J. (2012) STAP Refinement of the NMR database: a database of 2405 refined solution NMR structures. Nucleic acids research, 40, D525-530.
  2. Kim, T.R., Yang, J.S., Shin, S. and Lee, J. (2013) Statistical torsion angle potential energy functions for protein structure modeling: a bicubic interpolation approach. Proteins, 81, 1156-1165.
  3. Ryu, H., Kim, T.R., Ahn, S., Ji, S. and Lee, J. (2014) Protein NMR structures refined without NOE data. PloS one, 9, e108888