Chains and heterogens:
PDB Chain Sequences:
>2ptgA (A:) gplpvdlrgktafvagvadsngygwaickllraagarvlvgtwppvysifkkglessrfe qdsfyaqepsskvaaeaaekpvdlvfdkiypldavfdtpqdvppevssnkryagvggfti sevaeavradvgqidilvhslangpevtkpllqtsrkgylaavssssysfvsllqhflpl mkeggsalalsyiasekvipgygggmssakaalesdcrtlafeagraravrvncisagpl ksraasaigkagdktfidlaidyseanaplqkelesddvgraalfllsplaravtgatly vdnglhamgqaldsksltp
>2ptgA (A:) plpvdlrgktafvagvadsngygwaickllraagarvlvgtwppvysifkkvfdkiypld avfdtpqdvppevssnyagvggftisevaeavradvgqidilvhslangpevtkpllqts rkgylaavssssysfvsllqhflplmkeggsalalsyialesdcrtlafeagraravrvn cisagplkelesddvgraalfllsplaravtgatlyvdnglham
>2ptgB (B:) gplpvdlrgktafvagvadsngygwaickllraagarvlvgtwppvysifkkglessrfe qdsfyaqepsskvaaeaaekpvdlvfdkiypldavfdtpqdvppevssnkryagvggfti sevaeavradvgqidilvhslangpevtkpllqtsrkgylaavssssysfvsllqhflpl mkeggsalalsyiasekvipgygggmssakaalesdcrtlafeagraravrvncisagpl ksraasaigkagdktfidlaidyseanaplqkelesddvgraalfllsplaravtgatly vdnglhamgqaldsksltp
>2ptgB (B:) plpvdlrgktafvagvadsngygwaickllraagarvlvgtwppvysifkkvfdkiypld avfdtpqdvppevssnyagvggftisevaeavradvgqidilvhslangpevtkpllqts rkgylaavssssysfvsllqhflplmkeggsalalsyialesdcrtlafeagraravrvn cisagplkelesddvgraalfllsplaravtgatlyvdnglham