Chains and heterogens:
PDB Chain Sequences:
>1am5A (A:) rvteqmkneadteyygvisigtppesfkvifdtgssnlwvssshcsaqacsnhnkfkprq sstyvetgktvdltygtggmrgilgqdtvsvgggsdpnqelgesqtepgpfqaaapfdgi lglaypsiaaagavpvfdnmgsqslvekdlfsfylsgggangsevmlggvdnshytgsih wipvtaekywqvaldgitvngqtaacegcqaivdtgtskivapvsalanimkdigasenq gemmgncasvqslpditftingvkqplppsayiegdqafctsglgssgvpsntselwifg dvflrnyytiydrtnnkvgfapaa