Chains and heterogens:
PDB Chain Sequences:
>1xecA (A:) deasgigpeehfpevpeiepmgpvcpfrcqchlrvvqcsdlglekvpkdlppdtalldlq nnkiteikdgdfknlknlhtlilinnkiskispgafaplvklerlylsknqlkelpekmp ktlqelrvheneitkvrksvfnglnqmivvelgtnplkssgiengafqgmkklsyiriad tnittipqglppsltelhldgnkitkvdaaslkglnnlaklglsfnsisavdngslantp hlrelhlnnnklvkvpggladhkyiqvvylhnnnisaigsndfcppgyntkkasysgvsl fsnpvqyweiqpstfrcvyvraavqlgny
>1xecA (A:) gpvcpfrcqchlrvvqcsdlglekvpkdlppdtalldlqnnkiteikdgdfknlknlhtl ilinnkiskispgafaplvklerlylsknqlkelpekmpktlqelrvheneitkvrksvf nglnqmivvelgtnplkssgiengafqgmkklsyiriadtnittipqglppsltelhldg nkitkvdaaslkglnnlaklglsfnsisavdngslantphlrelhlnnnklvkvpgglad hkyiqvvylhnnnisaigsndfcppgyntkkasysgvslfsnpvqyweiqpstfrcvyvr aavql
>1xecB (B:) deasgigpeehfpevpeiepmgpvcpfrcqchlrvvqcsdlglekvpkdlppdtalldlq nnkiteikdgdfknlknlhtlilinnkiskispgafaplvklerlylsknqlkelpekmp ktlqelrvheneitkvrksvfnglnqmivvelgtnplkssgiengafqgmkklsyiriad tnittipqglppsltelhldgnkitkvdaaslkglnnlaklglsfnsisavdngslantp hlrelhlnnnklvkvpggladhkyiqvvylhnnnisaigsndfcppgyntkkasysgvsl fsnpvqyweiqpstfrcvyvraavqlgny
>1xecB (B:) gpvcpfrcqchlrvvqcsdlglekvpkdlppdtalldlqnnkiteikdgdfknlknlhtl ilinnkiskispgafaplvklerlylsknqlkelpekmpktlqelrvheneitkvrksvf nglnqmivvelgtnplkssgiengafqgmkklsyiriadtnittipqglppsltelhldg nkitkvdaaslkglnnlaklglsfnsisavdngslantphlrelhlnnnklvkvpgglad hkyiqvvylhnnnisaigsndfcppgyntkkasysgvslfsnpvqyweiqpstfrcvyvr aavql