schellmann_loop schellmann_loop_seven seven-residue schellmann loop schellmann loop seven sequence Wild type: A motif of seven consecutive residues that contains two H-bonds in which: the main-chain CO of residue(i) is H-bonded to the main-chain NH of residue(i+6), the main-chain CO of residue(i+1) is H-bonded to the main-chain NH of residue(i+5). BS:00228 SO:0001124