Chains and heterogens:
PDB Chain Sequences:
>1r87A (A:) knadsyakkphisalnapqldqrykneftigaavepyqlqnekdvqmlkrhfnsivaenv mkpisiqpeegkfnfeqadrivkfakangmdirfhtlvwhsqvpqwffldkegkpmvnet dpvkreqnkqlllkrlethiktiverykddikywdvvnevvgddgklrnspwyqiagidy ikvafqaarkyggdniklymndyntevepkrtalynlvkqlkeegvpidgighqshiqig wpseaeiektinmfaalgldnqiteldvsmygwpprayptydaipkqkfldqaarydrlf klyeklsdkisnvtfwgiadnhtwldsradvyydangnvvvdpnapyakvekgkgkdapf vfgpdykvkpaywaiidhk
>1r87A (A:) kphisalnapqldqrykneftigaavepyqlqnekdvqmlkrhfnsivaenvmkpisiqp eegkfnfeqadrivkfakangmdirfhtlvwhsqvpqwffldkegkpmvnetdpvkreqn kqlllkrlethiktiverykddikywdvvnevvgddgklrnspwyqiagidyikvafqaa rkyggdniklymndyntevepkrtalynlvkqlkeegvpidgighqshiqigwpseaeie ktinmfaalgldnqiteldvsmygwpprayptydaipkqkfldqaarydrlfklyeklsd kisnvtfwgiadnhtwldsradvyydangnvvvdpnapyakvekgkgkdapfvfgpdykv kpaywaiidhk