Chains and heterogens:
PDB Chain Sequences:
>1cca_ (-) mktttplvhvasvekgrsyedfqkvynaialklreddeydnyigygpvlvrlawhisgtw dkhdntggsyggtyrfkkefndpsnaglqngfkflepihkefpwissgdlfslggvtavq emqgpkipwrcgrvdtpedttpdngrlpdadkdagyvrtffqrlnmndrevvalmgahal gkthlknsgyegpwgaannvftnefylnllnedwklekndanneqwdsksgymmlptdys liqdpkylsivkeyandqdkffkdfskafekllengitfpkdapspfifktleeqgl
>1cca_ (-) lvhvasvekgrsyedfqkvynaialklreddeydnyigygpvlvrlawhisgtwdkhdnt ggsyggtyrfkkefndpsnaglqngfkflepihkefpwissgdlfslggvtavqemqgpk ipwrcgrvdtpedttpdngrlpdadkdagyvrtffqrlnmndrevvalmgahalgkthlk nsgyegpwgaannvftnefylnllnedwklekndanneqwdsksgymmlptdysliqdpk ylsivkeyandqdkffkdfskafekllengitfpkdapspfifktleeqgl