Chains and heterogens:
PDB Chain Sequences:
>1ccb_ (-) mktttplvhvasvekgrsyedfqkvynaialklreddeydnyigygpvlvrlawhisgtw dkhdntggsyggtyrfkkefndpsnaglqngfkflepihkefpwissgdlfslggvtavq emqgpkipwrcgrvdtpedttpdngrlpdadkdagyvrtffqrlnmndrevvalmgahal gkthlknsgyegpwgaannvftnefylnllnedwklekndanneqwdsksgymmlpteys liqdpkylsivkeyandqdkffkdfskafekllengitfpkdapspfifktleeqgl
>1ccb_ (-) lvhvasvekgrsyedfqkvynaialklreddeydnyigygpvlvrlawhisgtwdkhdnt ggsyggtyrfkkefndpsnaglqngfkflepihkefpwissgdlfslggvtavqemqgpk ipwrcgrvdtpedttpdngrlpdadkdagyvrtffqrlnmndrevvalmgahalgkthlk nsgyegpwgaannvftnefylnllnedwklekndanneqwdsksgymmlpteysliqdpk ylsivkeyandqdkffkdfskafekllengitfpkdapspfifktleeqgl