>4k9pB (B:) observed residues (from ATOM records)
asvhgttyellrrqgidtvfgnpgsnelpflkdfpedfryilalqeacvvgiadgyaqas
rkpafinlhsaagtgnamgalsnawnshsplivtagqqtramigvealltnvdaanlprp
lvkwsyepasaaevphamsraihmasmapqgpvylsvpyddwdkdadpqshhlfdrhvss
svrlndqdldilvkalnsasnpaivlgpdvdaananadcvmlaerlkapvwvapsaprcp
fptrhpcfrglmpagiaaisqlleghdvvlvigapvfryyqydpgqylkpgtrlisvtcd
pleaarapmgdaivadigamasalanlveessrqlptaapepakvdqdagrlhpetvfdt
lndmapenaiylneststtaqmwqrlnmrnpgsyyfcaagglgfalpaaigvqlaeperq
viavigdgsanysisalwtaaqyniptifvimnngtygilrwfagvleaenvpgldvpgi
dfralakgygvqalkadnleqlkgslqealsakgpvlievstvsp