>3tzcD (D:) observed residues (from ATOM records)
msqfmnlegkvalvtgasrgigkaiaellaergakvigtatsesgaqaisdylgdngkgm
alnvtnpesieavlkaitdefggvdilvnnaewsdimetnltsifrlskavlrgmmkkrq
griinvgsvvanfaaakagvigftksmarevasrgvtvntvapgfietdmtkndeqrtat
laqvpagrlgdpreiasavaflaspeaayitgetlhvnggmy