Chains and heterogens:
PDB Chain Sequences:
>1krjA (A:) ttplvhvasvekgrsyedfqkvynaialklreddeydnyigygpvlvrlawhtsgtwdkh dntggsyggtyrfkkefndpsnaglqngfkflepihkefpwissgdlfslggvtavqemq gpkipwrcgrvdtpedttpdngrlpdadkdadyvrtffqrlnmndrevvalmgahtlgkt hlknsgyegpwdatnnvfdnsfylnllnedwklekndanneqwdsksgymmlptdysliq dpkylsivkeyandqdkffkdfskafekllengitfpkdapspfifktleeqgl