Chains and heterogens:
PDB Chain Sequences:
>1pi3A (A:) masvhgttyellrrqgidtvfgnpgsnqlpflkdfpedfryilalqeacvvgiadgyaqa srkpafinlhsaagtgnamgalsnawnshsplivtagqqtramigvealltnvdaanlpr plvkwsyepasaaevphamsraihmasmapqgpvylsvpyddwdkdadpqshhlfdrhvs ssvrlndqdldilvkalnsasnpaivlgpdvdaananadcvmlaerlkapvwvapsaprc pfptrhpcfrglmpagiaaisqlleghdvvlvigapvfryhqydpgqylkpgtrlisvtc dpleaarapmgdaivadigamasalanlveessrqlptaapepakvdqdagrlhpetvfd tlndmapenaiylneststtaqmwqrlnmrnpgsyyfcaagglgfalpaaigvqlaeper qviavigdgsanysisalwtaaqyniptifvimnngtygalrwfagvleaenvpgldvpg idfralakgygvqalkadnleqlkgslqealsakgpvlievstvspvk
>1pi3A (A:) asvhgttyellrrqgidtvfgnpgsnqlpflkdfpedfryilalqeacvvgiadgyaqas rkpafinlhsaagtgnamgalsnawnshsplivtagqqtramigvealltnvdaanlprp lvkwsyepasaaevphamsraihmasmapqgpvylsvpyddwdkdadpqshhlfdrhvss svrlndqdldilvkalnsasnpaivlgpdvdaananadcvmlaerlkapvwvapsaprcp fptrhpcfrglmpagiaaisqlleghdvvlvigapvfryhqydpgqylkpgtrlisvtcd pleaarapmgdaivadigamasalanlveessrqlptaapepakvdqdagrlhpetvfdt lndmapenaiylneststtaqmwqrlnmrnpgsyyfcaagglgfalpaaigvqlaeperq viavigdgsanysisalwtaaqyniptifvimnngtygalrwfagvleaenvpgldvpgi dfralakgygvqalkadnleqlkgslqealsakgpvlievstv