>3l93A (A:) observed residues (from ATOM records) namitkaiypgtfdpitnghldlvtrasamfshvilaiadssskkpmftldervalakkv taplknvevlgfselmaefakkhnanilvrglrsvsdfeyewqlanmnrhlmpklesvfl ipsekwsfissslvkevarhggditpflpkpvtkallakla