Chains and heterogens:
PDB Chain Sequences:
>1a2g_ (-) lvhvasvekgrsyedfqkvynaialklreddeydnyigygpvlvrlawhisgtwdkhdnt ggsyggtyrfkkefndpsnaglqngfkflepihkefpwissgdlfslggvtavqemqgpk ipwrcgrvdtpedttpdngrlpdadkdagyvrtffqrlnmndrevvalmgahalgkthlk nsgyegpwgaannvftnefylnllnedwklekndanneqwdsksgymhlptdysliqdpk ylsivkeyandqdkffkdfskafekllengitfpkdapspfifktleeqgl