Chains and heterogens:
PDB Chain Sequences:
>3c9xA (A:) etgsapnhpsdsadseyitsvsigtpaqvlpldfdtgssdlwvfssetpkssatghaiyt psksstskkvsgaswsisygdgssssgdvytdkvtiggfsvntqgvesatrvstefvqdt visglvglafdsgnqvrphpqktwfsnaasslaeplftadlrhgqngsynfgyidtsvak gpvaytpvdnsqgfweftasgysvgggklnrnsidgiadtgttllllddnvvdayyanvq saqydnqqegvvfdcdedlpsfsfgvgsstitipgdllnltpleegsstcfgglqsssgi ginifgdvalkaalvvfdlgnerlgwaqk