>1sl6A (A:) observed residues (from ATOM records)
peksklqeiyqeltqlkqqqiyqeltdlktaferlcrhcpkdwtffqgncyfmsnsqrnw
hdsvtacqevraqlvviktaeeqnflqlqtsrsnrfswmglsdlnqegtwqwvdgsplsp
sfqrywnsgepnnsgnedcaefsgsgwndnrcdvdnywickkpaacfr