Chains and heterogens:
PDB Chain Sequences:
>1aa4_ (-) mktlvhvasvekgrsyedfqkvynaialklreddeydnyigygpvlvrlawhisgtwdkh dntggsyggtyrfkkefndpsnaglqngfkflepihkefpwissgdlfslggvtavqemq gpkipwrcgrvdtpedttpdngrlpdadkdagyvrtffqrlnmndrevvalmgahalgkt hlknsgyegpggaannvftnefylnllnedwklekndanneqwdsksgymmlptdysliq dpkylsivkeyandqdkffkdfskafekllengitfpkdapspfifktleeqgl
>1aa4_ (-) lvhvasvekgrsyedfqkvynaialklreddeydnyigygpvlvrlawhisgtwdkhdnt ggsyggtyrfkkefndpsnaglqngfkflepihkefpwissgdlfslggvtavqemqgpk ipwrcgrvdtpedttpdngrlpdadkdagyvrtffqrlnmndrevvalmgahalgkthlk nsgyegpggaannvftnefylnllnedwklekndanneqwdsksgymmlptdysliqdpk ylsivkeyandqdkffkdfskafekllengitfpkdapspfifktleeqgl