Chains and heterogens:
PDB Chain Sequences:
>2fn3A (A:) masvhgttyellrrqgidtvfgnpganelpflkdfpedfryilalqeacvvgiadgyaqa srkpafinlhsaagtgnamgalsnawnshsplivtagqqtramigvealltnvdaanlpr plvkwsyepasaaevphamsraihmasmapqgpvylsvpyddwdkdadpqshhlfdrhvs ssvrlndqdldilvkalnsasnpaivlgpdvdaananadcvmlaerlkapvwvapsaprc pfptrhpcfrglmpagiaaisqlleghdvvlvigapvfryhqydpgqylkpgtrlisvtc dpleaarapmgdaivadigamasalanlveessrqlptaapepakvdqdagrlhpetvfd tlndmapenaiylneststtaqmwqrlnmrnpgsyyfcaagglgfalpaaigvqlaeper qviavigdgsanysisalwtaaqyniptifvimnngtygalrwfagvleaenvpgldvpg idfralakgygvqalkadnleqlkgslqealsakgpvlievstvspvk
>2fn3A (A:) asvhgttyellrrqgidtvfgnpganelpflkdfpedfryilalqeacvvgiadgyaqas rkpafinlhsaagtgnamgalsnawnshsplivtagqqtramigvealltnvdaanlprp lvkwsyepasaaevphamsraihmasmapqgpvylsvpyddwdkdadpqshhlfdrhvss svrlndqdldilvkalnsasnpaivlgpdvdaananadcvmlaerlkapvwvapsaprcp fptrhpcfrglmpagiaaisqlleghdvvlvigapvfryhqydpgqylkpgtrlisvtcd pleaarapmgdaivadigamasalanlveessrqlptaapepakvdqdagrlhpetvfdt lndmapenaiylneststtaqmwqrlnmrnpgsyyfcaagglgfalpaaigvqlaeperq viavigdgsanysisalwtaaqyniptifvimnngtygalrwfagvleaenvpgldvpgi dfralakgygvqalkadnleqlkgslqealsakgpvlievstvs