>1pi3A (A:) observed residues (from ATOM records)
asvhgttyellrrqgidtvfgnpgsnqlpflkdfpedfryilalqeacvvgiadgyaqas
rkpafinlhsaagtgnamgalsnawnshsplivtagqqtramigvealltnvdaanlprp
lvkwsyepasaaevphamsraihmasmapqgpvylsvpyddwdkdadpqshhlfdrhvss
svrlndqdldilvkalnsasnpaivlgpdvdaananadcvmlaerlkapvwvapsaprcp
fptrhpcfrglmpagiaaisqlleghdvvlvigapvfryhqydpgqylkpgtrlisvtcd
pleaarapmgdaivadigamasalanlveessrqlptaapepakvdqdagrlhpetvfdt
lndmapenaiylneststtaqmwqrlnmrnpgsyyfcaagglgfalpaaigvqlaeperq
viavigdgsanysisalwtaaqyniptifvimnngtygalrwfagvleaenvpgldvpgi
dfralakgygvqalkadnleqlkgslqealsakgpvlievstv