>4k9lA (A:) observed residues (from ATOM records)
asvhgttyellrrqgidtvfgnpgsnelpflkdfpedfryilalqeacvvgiadgyaqas
rkpafinlhsaagtgnamgalsnawnshsplivtagqqtramigvealltnvdaanlprp
lvkwsyepasaaevphamsraihmasmapqgpvylsvpyddwdkdadpqshhlfdrhvss
svrlndqdldilvkalnsasnpaivlgpdvdaananadcvmlaerlkapvwvapsaprcp
fptrhpcfrglmpagiaaisqlleghdvvlvigapvfrytqgqylkpgtrlisvtcdple
aarapmgdaivadigamasalanlveessrqlptaapepakvdqdagrlhpetvfdtlnd
mapenaiylneststtaqmwqrlnmrnpgsyyfcaagglgfalpaaigvqlaeperqvia
vigdgsanysisalwtaaqyniptifvimnngtygalrwfagvleaenvpgldvpgidfr
alakgygvqalkadnleqlkgslqealsakgpvlievstvsp