Chains and heterogens:
PDB Chain Sequences:
>1q9vA (A:) divmsqspsslavsagekvtmsckssqsllnsrtrknylawyqqkpgqspklliywastr esgvpdrftgsgsgtdftltitsvqaedlavyyckqsynlrtfgggtkleikradaaptv sifppsseqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysm sstltltkdeyerhnsytceathktstspivksfnrnec
>1q9vB (B:) evklvesggglvqsggslrlscatsgftftdyymswvrqppgkalewlgfirnkangytt eyspsvkgrftisrdnsqsilylqmntlraedsatyycardhdgyyerfsywgqgtlvtv saakttppsvyplapgsaaqtnsmvtlgclvkgyfpepvtvtwnsgslssgvhtfpavlq sdlytlsssvtvpsstwpsetvtcnvahpasstkvdkkivpr