Chains and heterogens:
PDB Chain Sequences:
>3a1nA (A:) milvtgssgqigtelvpylaekygkknviasdivqrdtggikfitldvsnrdeidravek ysidaifhlagilsakgekdpalaykvnmngtynileaakqhrvekvvipstigvfgpet pknkvpsititrprtmygvtkiaaellgqyyyekfgldvrslrypgiisykaeptagttd yaveifyyavkrekykcylapnralpmmympdalkalvdlyeadrdklvlrngynvtayt ftpselyskikeripefeieykedfrdkiaatwpesldsseasnewgfsieydldrtidd midhiseklgiegkhal
>3a1nA (A:) milvtgssgqigtelvpylaekygkknviasdivqrdtggikfitldvsnrdeidravek ysidaifhlagilsakgekdpalaykvnmngtynileaakqhrvekvvipstigvfgpet pknkvpsititrprtmygvtkiaaellgqyyyekfgldvrslrypgiisykaeptagttd yaveifyyavkrekykcylapnralpmmympdalkalvdlyeadrdklvlrngynvtayt ftpselyskikeripefeieykedfrdkiaatwpesldsseasnewgfsieydldrtidd midhiseklgiegkh
>3a1nB (B:) milvtgssgqigtelvpylaekygkknviasdivqrdtggikfitldvsnrdeidravek ysidaifhlagilsakgekdpalaykvnmngtynileaakqhrvekvvipstigvfgpet pknkvpsititrprtmygvtkiaaellgqyyyekfgldvrslrypgiisykaeptagttd yaveifyyavkrekykcylapnralpmmympdalkalvdlyeadrdklvlrngynvtayt ftpselyskikeripefeieykedfrdkiaatwpesldsseasnewgfsieydldrtidd midhiseklgiegkhal
>3a1nB (B:) milvtgssgqigtelvpylaekygkknviasdivqrdtggikfitldvsnrdeidravek ysidaifhlagilsakgekdpalaykvnmngtynileaakqhrvekvvipstigvfgpet pknkvpsititrprtmygvtkiaaellgqyyyekfgldvrslrypgiisykaeptagttd yaveifyyavkrekykcylapnralpmmympdalkalvdlyeadrdklvlrngynvtayt ftpselyskikeripefeieykedfrdkiaatwpesldsseasnewgfsieydldrtidd midhisekl