Chains and heterogens:
PDB Chain Sequences:
>1qs2A (A:) kvedfkedkekakewgkekekewkltatekgkmnnfldnkndiktnykeitfsmagsfed eikdlkeidkmfdktnlsnsiityknvepttigfnksltegntinsdamaqfkeqfldrd ikfdsyldthltaqqvsskervilkvtvpsgkgsttptkagvilnnseykmlidngymvh vdkvskvvkkgveclqiegtlkksldfkndinaeahswgmknyeewakdltdsqrealdg yarqdykeinnylrnqggsgnekldaqiknisdalgkkpipenitvyrwcgmpefgyqis dplpslkdfeeqflntikedkgymstslsserlaafgsrkiilrlqvpkgstgaylsaig gfasekeilldkdskyhidkvteviikgvkryvvdatlltn