>4mu3A (A:) observed residues (from ATOM records)
sarigevkretkqtnvsvkinldghgvsdsstgipfldhmldqlashglfdvhvratgdt
hiddhhtnedvalaigtallkalgerkginrfgdftapldealihvsldlsgrpylgynl
eiptqrvgtydtqlvehffqslvntsgmtlhirqlagknshhiieatfkafaralrqate
sdprrg