Chains and heterogens:
PDB Chain Sequences:
>2fb3A (A:) mveqikdklgrpirdlrlsvtdrcnfrcdycmpkevfgddfvflpknelltfdemariak vyaelgvkkiritggeplmrrdldvliaklnqidgiediglttnglllkkhgqklydagl rrinvsldaiddtlfqsinnrnikattileqidyatsiglnvkvnvviqkginddqiipm leyfkdkhieirfiefmdvgndngwdfskvvtkdemltmieqhfeidpvepkyfgevaky yrhkdngvqfglitsvsqsfcstctrarlssdgkfygclfatvdgfnvkafirsgvtdee lkeqfkalwqirddrysdertaqtvanrqrkkinmnyigg
>2fb3A (A:) eqikdklgrpirdlrlsvtdrcnfrcdycmpkevfgddfvflpknelltfdemariakvy aelgvkkiritggeplmrrdldvliaklnqidgiediglttnglllkkhgqklydaglrr invsldaiddtlfqsinnrnikattileqidyatsiglnvkvnvviqkginddqiipmle yfkdkhieirfiefmdvgndngwdfskvvtkdemltmieqhfeidpvepkyfgevakyyr hkdngvqfglitsvsqsfcstctrarlssdgkfygclfatvdgfnvkafirsgvtdeelk eqfkalwqirddrysdertaqtvanrq
>2fb3B (B:) mveqikdklgrpirdlrlsvtdrcnfrcdycmpkevfgddfvflpknelltfdemariak vyaelgvkkiritggeplmrrdldvliaklnqidgiediglttnglllkkhgqklydagl rrinvsldaiddtlfqsinnrnikattileqidyatsiglnvkvnvviqkginddqiipm leyfkdkhieirfiefmdvgndngwdfskvvtkdemltmieqhfeidpvepkyfgevaky yrhkdngvqfglitsvsqsfcstctrarlssdgkfygclfatvdgfnvkafirsgvtdee lkeqfkalwqirddrysdertaqtvanrqrkkinmnyigg
>2fb3B (B:) qikdklgrpirdlrlsvtdrcnfrcdycmpkevfgddfvflpknelltfdemariakvya elgvkkiritggeplmrrdldvliaklnqidgiediglttnglllkkhgqklydaglrri nvsldaiddtlfqsinnrnikattileqidyatsiglnvkvnvviqkginddqiipmley fkdkhieirfiefmdvgndngwdfskvvtkdemltmieqhfeidpvepkyfgevakyyrh kdngvqfglitsvsqsfcstctrarlssdgkfygclfatvdgfnvkafirsgvtdeelke qfkalwqirddrysdertaqtvanrq