Chains and heterogens:
PDB Chain Sequences:
>1q9rA (A:) divmsqspsslavsagekvtmsckssqsllnsrtrknylawyqqkpgqspklliywastr esgvpdrftgsgsgtdftltitsvqaedlavyyckqsynlrtfgggtkleikradaaptv sifppsseqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysm sstltltkdeyerhnsytceathktstspivksfnrnec
>1q9rB (B:) evklvesggglvqsggslrlscatsgftftdyymswvrqppgkalewlgfirnkangytt eyspsvkgrftisrdnsqsilylqmntlraedsatyycardhdgyyerfsywgqgtlvtv saakttppsvyplapgsaaqtnsmvtlgclvkgyfpepvtvtwnsgslssgvhtfpavlq sdlytlsssvtvpsstwpsetvtcnvahpasstkvdkkivpr