>5trtD (D:) observed residues (from ATOM records)
mgfldgkrilltgllsnrsiaygiakackregaelaftyvgdrfkdritefaaefgselv
fpcdvaddaqidalfaslkthwdsldglvhsigfapreaiagdfldgltrenfriahdis
aysfpalakaalpmlsddaslltlsylgaeraipnyntmglakaaleasvrylavslgak
gvrvnaisagpiktiksfgkildfvesnsplkrnvtieqvgnagafllsdlasgvtaevm
hvdsgfnavvggma