Chains and heterogens:
PDB Chain Sequences:
>2casA (A:) gvgistgtfnnqtefkflengwveitanssrlvhlnmpesenyrrvvvnnmdktavngnm alddihaqivtpwslvdanawgvwfnpgdwqlivntmselhlvsfeqeifnvvlktvses atqpptkvynndltaslmvaldsnntmpftpaamrsetlgfypwkptiptpwryyfqwdr tlipshtgtsgtptniyhgtdpddvqfytiensvpvhllrtgdefatgtfffdckpcrlt htwqtnralglppflnslpqsegatnfgdigvqqdkrrgvtqmgntnyiteatimrpaev gysapyysfeastqgpfktpiaagrggaqtdenqaadgnpryafgrqhgqkttttgetpe rftyiahqdtgrypegdwiqninfnlpvtndnvllptdpiggktginytnifntygplta lnnvppvypngqiwdkefdtdlkprlhvnapfvcqnncpgqlfvkvapnltneydpdasa nmsrivtysdfwwkgklvfkaklrashtwnpiqqmsinvdnqfnyvpsniggmkivyeks qlaprkly