Chains and heterogens:
PDB Chain Sequences:
>1fs9A (A:) mtkfklllagslvaivsmgllasninerekervalnktahsqgiegkamseewaryyprq fdswkktkesdnitdmlkekpalvvawagypfskdynaprghyyalqdnintlrtgapvd gktgplpsacwtckspdvpriieqdgeleyftgkwakygdeivntigcynchddksaelk skvpyldrglsaagfktfaesthqekrslvcaqchveyyfkktewkddkgvdktamvvtl pwskgisteqmeayydeinfadwthgisktpmlkaqhpdwelyktgihgqkgvscadchm pytqegavkysdhkvgnpldnmdkscmnchreseqklkdivkqkferkeflqdiafdnig kahletgkamelgatdaelkeirthirhaqwradmaiaghgsffhapeevlrllasgnee aqkariklvkvlakygaidyvapdfetkekaqklakvdmeafiaeklkfkqtleqewkkq aiakgrlnpeslkgvdekssyydktkk
>1fs9A (A:) ktahsqgiegkamseewaryyprqfdswkktkesdnitdmlkekpalvvawagypfskdy naprghyyalqdnintlrtgapvdgktgplpsacwtckspdvpriieqdgeleyftgkwa kygdeivntigcynchddksaelkskvpyldrglsaagfktfaesthqekrslvcaqchv eyyfkktewkddkgvdktamvvtlpwskgisteqmeayydeinfadwthgisktpmlkaq hpdwelyktgihgqkgvscadchmpytqegavkysdhkvgnpldnmdkscmnchreseqk lkdivkqkferkeflqdiafdnigkahletgkamelgatdaelkeirthirhaqwradma iaghgsffhapeevlrllasgneeaqkariklvkvlakygaidyvapdfetkekaqklak vdmeafiaeklkfkqtleqewkkqaiakgrlnpeslkgvdekssyydktkk