Chains and heterogens:
PDB Chain Sequences:
>4k9kA (A:) asvhgttyellrrqgidtvfgnpgsnelpflkdfpedfryilalqeacvvgiadgyaqas rkpafinlhsaagtgnamgalsnawnshsplivtagqqtramigvealltnvdaanlprp lvkwsyepasaaevphamsraihmasmapqgpvylsvpyddwdkdadpqshhlfdrhvss svrlndqdldilvkalnsasnpaivlgpdvdaananadcvmlaerlkapvwvapsaprcp fptrhpcfrglmpagiaaisqlleghdvvlvigapvfryyqydpgqylkpgtrlisvtcd pleaarapmgdaivadigamasalanlveessrqlptaapepakvdqdagrlhpetvfdt lndmapenaiylneststtaqmwqrlnmrnpgsyyfcaagglgfalpaaigvqlaeperq viavigdgsanysisalwtaaqyniptifvimnngtygalrwfagvleaenvpgldvpgi dfralakgygvqalkadnleqlkgslqealsakgpvlievstvshhhhhh
>4k9kA (A:) asvhgttyellrrqgidtvfgnpgsnelpflkdfpedfryilalqeacvvgiadgyaqas rkpafinlhsaagtgnamgalsnawnshsplivtagqqtramigvealltnvdaanlprp lvkwsyepasaaevphamsraihmasmapqgpvylsvpyddwdkdadpqshhlfdrhvss svrlndqdldilvkalnsasnpaivlgpdvdaananadcvmlaerlkapvwvapsaprcp fptrhpcfrglmpagiaaisqlleghdvvlvigapvfryyqydpgqylkpgtrlisvtcd pleaarapmgdaivadigamasalanlveessrqlptaapepakvdqdagrlhpetvfdt lndmapenaiylneststtaqmwqrlnmrnpgsyyfcaagglgfalpaaigvqlaeperq viavigdgsanysisalwtaaqyniptifvimnngtygalrwfagvleaenvpgldvpgi dfralakgygvqalkadnleqlkgslqealsakgpvlievstvs