The page you are visiting links to the oldest, original version of LOOPP program. This version is outdated, especially in its database part. Unless you have a specific reason to use this version, please consider using the current version here.

Learning, Observing and Outputting
Protein Patterns (LOOPP)
by Jarek Meller and Ron Elber

The LOOPP program (Learning, Observing and Outputting Protein Patterns). A program for potential optimization and alignments. LOOPP aligns sequence to sequence, sequence to structure, and structure to structure. It further enables the optimization of potentials and scoring functions for the above mentioned applications.

To submit your sequence to our server, complete the requested information below, then click Submit/Run Prediction.
Your results will be sent to you by email at the address you provide.

Type the information into the fields Description of field
Your email address
Name of sequence (optional)


Paste, or type your sequence

  • amino acids in one-letter code
  • white spaces allowed
  • non-standard amino acids ignored
  • use SRS6 to get your sequence from a public database