Chains and heterogens:
PDB Chain Sequences:
>1g4rA (A:) mgdkgtrvfkkaspngkltvylgkrdfvdhidlvepvdgvvlvdpeylkerrvyvtltca frygredldvlgltfrkdlfvanvqsfppapedkkpltrlqerlikklgehaypftfeip pnlpcsvtlqpgpedtgkacgvdyevkafcaenleekihkrnsvrlvirkvqyaperpgp qptaettrqflmsdkplhleasldkeiyyhgepisvnvhvtnntnktvkkikisvrqyad iclfntaqykcpvameeaddtvapsstfckvytltpflannrekrglaldgklkhedtnl asstllreganreilgiivsykvkvklvvsrggllgdlassdvavelpftlmhpkpkeep phrevpehetpvdtnlieldtndddivfedfar
>1g4rA (A:) rvfkkaspngkltvylgkrdfvdhidlvepvdgvvlvdpeylkerrvyvtltcafrygre dldvlgltfrkdlfvanvqsfppapedkkpltrlqerlikklgehaypftfeippnlpcs vtlqpgpedtgkacgvdyevkafcaenleekihkrnsvrlvirkvqyaperpgpqptaet trqflmsdkplhleasldkeiyyhgepisvnvhvtnntnktvkkikisvrqyadiclfnt aqykcpvameeaddtvapsstfckvytltpflannrekrglaldgklkhedtnlasstll reganreilgiivsykvkvklvvsdlassdvavelpftlmhpkpdivfedfar