An interactive tool for prediction, visualization and selection of missing segments in proteins
SuperLooper2 is an interactive web service for the insertion
of missing segments such as loops in proteins. Loop candidates
are selected from a pre-calculated database containing ~700 million
protein fragments with a residue length of 3-35. The fragments are
extracted from structural coordinates deposited in the RSCB PDB 
The integration of the NGL viewer 
, a molecular viewer based on WebGL,
allows visualization and interactive selection of a loop from a
list of 100 suitable candidates. A color code is provided to
indicate clashes or other relevant criteria to promote an
individual choice of the most suitable loop.
A selected loop can be downloaded inserted into
the user provided protein. In addition, all 100 loop candidates can be downloaded
for further analyses.