Chains and heterogens:
PDB Chain Sequences:
>1aen_ (-) lvhvasvekgrsyedfqkvynaialklreddeydnyigygpvlvrlawhisgtwdkhdnt ggsyggtyrfkkefndpsnaglqngfkflepihkefpwissgdlfslggvtavqemqgpk ipwrcgrvdtpedttpdngrlpdadkdagyvrtffqrlnmndrevvalmgahalgkthlk nsgyegpggaannvftnefylnllnedwklekndanneqwdsksgymmlptdysliqdpk ylsivkeyandqdkffkdfskafeklledgitfpkdapspfifktleeqgl