>3ct7A (A:) observed residues (from ATOM records)
mkispslmcmdllkfkeqiefidshadyfhidimdghfvpnltlspffvsqvkklatkpl
dchlmvtrpqdyiaqlaragadfitlhpetingqafrlideirrhdmkvglilnpetpve
amkyyihkadkitvmtvdpgfagqpfipemldklaelkawreregleyeievdgscnqat
yeklmaagadvfivgtsglfnhaenideawrimtaqila