Chains and heterogens:
PDB Chain Sequences:
>1s4pA (A:) efadapidtkttmdyitpsfankagkpkacyvtlvrnkelkgllssikyvenkinkkfpy pwvflndepfteefkeavtkavssevkfgilpkehwsypewinqtkaaeiradaatkyiy ggsesyrhmcryqsgffwrhelleeydwywrvepdiklycdinydvfkwmqenekvygft vsiheyevtiptlwqtsmdfikknpeyldennlmsflsndngktynlchfwsnfeianln lwrspayreyfdtldhqggffyerwgdapvhsiaaalflpkdkihyfsdigyhhppydnc pldkevynsnncecdqgndftfqgyscgkeyydaqglvkpknwkkfre
>1s4pA (A:) kttmdyitpsfgkpkacyvtlvrnkelkgllssikyvenkinkkfpypwvflndepftee fkeavtkavssevkfgilpkehwsypewinqtkaaeiradaatkyiyggsesyrhmcryq sgffwrhelleeydwywrvepdiklycdinydvfkwmqenekvygftvsiheyevtiptl wqtsmdfikknpeyldennlmsflsndngktynlchfwsnfeianlnlwrspayreyfdt ldhqggffyerwgdapvhsiaaalflpkdkihyfsdigyhhppydncpldkevynsnnce cdqgndftfqgyscgkeyydaqglvkpknwkkfre
>1s4pB (B:) efadapidtkttmdyitpsfankagkpkacyvtlvrnkelkgllssikyvenkinkkfpy pwvflndepfteefkeavtkavssevkfgilpkehwsypewinqtkaaeiradaatkyiy ggsesyrhmcryqsgffwrhelleeydwywrvepdiklycdinydvfkwmqenekvygft vsiheyevtiptlwqtsmdfikknpeyldennlmsflsndngktynlchfwsnfeianln lwrspayreyfdtldhqggffyerwgdapvhsiaaalflpkdkihyfsdigyhhppydnc pldkevynsnncecdqgndftfqgyscgkeyydaqglvkpknwkkfre
>1s4pB (B:) tkttmdyitpsfkpkacyvtlvrnkelkgllssikyvenkinkkfpypwvflndepftee fkeavtkavssevkfgilpkehwsypewinqtkaaeiradaatkyiyggsesyrhmcryq sgffwrhelleeydwywrvepdiklycdinydvfkwmqenekvygftvsiheyevtiptl wqtsmdfikknpeyldennlmsflsndngktynlchfwsnfeianlnlwrspayreyfdt ldhqggffyerwgdapvhsiaaalflpkdkihyfsdigyhhppydncpldkevynsnnce cdqgndftfqgyscgkeyydaqglvkpknwkkfre