Chains and heterogens:
PDB Chain Sequences:
>1q9tA (A:) divmsqspsslavsagekvtmsckssqsllnsrtrknylawyqqkpgqspklliywastr esgvpdrftgsgsgtdftltitsvqaedlavyyckqsynlrtfgggtkleikradaaptv sifppsseqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysm sstltltkdeyerhnsytceathktstspivksfnrnec
>1q9tB (B:) evklvesggglvqsggslrlscatsgftftdyymswvrqppgkalewlgfirnkangytt eyspsvkgrftisrdnsqsilylqmntlraedsatyycardhdgyyerfsywgqgtlvtv saakttppsvyplapgsaaqtnsmvtlgclvkgyfpepvtvtwnsgslssgvhtfpavlq sdlytlsssvtvpsstwpsetvtcnvahpasstkvdkkivprdc