>1tt4B (B:) observed residues (from ATOM records)
dfhvsepytlgielemqvinppgydlsqdsstlidavkpqltageikhditesmlematg
vcrdidqaaaqlsamqhvilqaasehhlgicgggthpfqkwrtlenfgyliqqatvfgqh
vhvgcangddaiyllhglshfvphfialsaaspymqgadtrfacarlnifsafpdngpmp
wvsnwqefaglfrrlsyttmidsikdlhwdirpspafgtvevrvmdtpltldhainmagl
iqatahwllterpfkpqeqdyllykfnrfqacryglegvltdaytgdrrrladdtlrlld
nvtpsarklgadsaidalrlqvkkggneaqymrefiadggsliglvqkhceiwa