Chains and heterogens:
PDB Chain Sequences:
>1u74A (A:) mittplvhvasvekgrsyedfqkvynaialklreddeydnyigygpvlvrlawhisgtwd khdntggsyggtyrfkkefndpsnaglqngfkflepihkefpwissgdlfslggvtavqe mqgpkipwrcgrvdtpedttpdngrlpdadkdagyvrtffqrlnmndrevvalmgahalg kthlknsgyegpwgaannvftnefylnllnedwklekndanneqwdsksgymmlptdysl iqdpkylsivkeyandqdkffkdfskafekllengitfpkdapspfifktleeqgl
>1u74A (A:) ttplvhvasvekgrsyedfqkvynaialklreddeydnyigygpvlvrlawhisgtwdkh dntggsyggtyrfkkefndpsnaglqngfkflepihkefpwissgdlfslggvtavqemq gpkipwrcgrvdtpedttpdngrlpdadkdagyvrtffqrlnmndrevvalmgahalgkt hlknsgyegpwgaannvftnefylnllnedwklekndanneqwdsksgymmlptdysliq dpkylsivkeyandqdkffkdfskafekllengitfpkdapspfifktleeqgl
>1u74B (B:) tefkagsakkgatlfktrclqchtvekggphkvgpnlhgifgrhsgqaegysytdanikk nvlwdennmseyltnpkkyipgtkmafgglkkekdrndlitylkkase
>1u74C (C:) mittplvhvasvekgrsyedfqkvynaialklreddeydnyigygpvlvrlawhisgtwd khdntggsyggtyrfkkefndpsnaglqngfkflepihkefpwissgdlfslggvtavqe mqgpkipwrcgrvdtpedttpdngrlpdadkdagyvrtffqrlnmndrevvalmgahalg kthlknsgyegpwgaannvftnefylnllnedwklekndanneqwdsksgymmlptdysl iqdpkylsivkeyandqdkffkdfskafekllengitfpkdapspfifktleeqgl
>1u74C (C:) ittplvhvasvekgrsyedfqkvynaialklreddeydnyigygpvlvrlawhisgtwdk hdntggsyggtyrfkkefndpsnaglqngfkflepihkefpwissgdlfslggvtavqem qgpkipwrcgrvdtpedttpdngrlpdadkdagyvrtffqrlnmndrevvalmgahalgk thlknsgyegpwgaannvftnefylnllnedwklekndanneqwdsksgymmlptdysli qdpkylsivkeyandqdkffkdfskafekllengitfpkdapspfifktleeqgl
>1u74D (D:) tefkagsakkgatlfktrclqchtvekggphkvgpnlhgifgrhsgqaegysytdanikk nvlwdennmseyltnpkkyipgtkmafgglkkekdrndlitylkkase