FALC-Loop is an internet server for protein loop modeling. Users can submit a protein structure with one or more missing parts (called loops) through the Submit page and view and download the constructed loop models on the Queue page. A tutorial is provided on the Help page.


The FALC-Loop server uses the protein loop modeling method that employs fragment assembly and analytical loop closure developed in the Reference. The method shows an excellent performance when compared to previous loop sampling methods (See Table 1 of the Reference).