Chains and heterogens:
PDB Chain Sequences:
>1pxcA (A:) mktqvaiigagpsglllgqllhkagidnvilerqtpdyvlgriragvleqgmvdllreag vdrrmardglvhegveiafagqrrridlkrlsggktvtvygqtevtrdlmeareacgatt vyqaaevrlhdlqgerpyvtferdgerlrldcdyiagcdgfhgisrqsipaerlkvferv ypfgwlglladtppvsheliyanhprgfalcsqrsatrsryyvqvplsekvedwsderfw telkarlpsevaeklvtgpsleksiaplrsfvvepmqhgrlflagdaahivpptgakgln laasdvstlyrlllkayregrgellerysaiclrriwkaerfswwmtsvlhrfpdtdafs qriqqteleyylgseaglatiaenfvglpyeeie