Chains and heterogens:
PDB Chain Sequences:
>1u28A (A:) mkiaipkerrpgedrvaispevvkklvglgfeviveqgagvgasitddaltaagatiast aaqalsqadvvwkvqrpmtaeegtdevalikegavlmchlgaltnrpvvealtkrkitay amelmprisraqsmdilssqsnlagyravidgayefarafpmmmtaagtvpparvlvfgv gvaglqaiatakrlgavvmatdvraatkeqveslggkfitvddeamktaetaggyakemg eefrkkqaeavlkelvktdiaittalipgkpapvliteemvtkmkpgsviidlaveaggn cplsepgkivvkhgvkivghtnvpsrvaadasplfaknllnfltphvdkdtktlvmkled etvsgtcvtrdgaivhpaltgqga
>1u28A (A:) mkiaipkerrpgedrvaispevvkklvglgfeviveqgagvgasitddaltaagatiast aaqalsqadvvwkvqrpmtaeegtdevalikegavlmchlgaltnrpvvealtkrkitay amelmprisraqsmdilssqsnlagyravidgayefarafpmmmtaagtvpparvlvfgv gvaglqaiatakrlgavvmatdvraatkeqveslggkfitvddeamktaetaggyakemg eefrkkqaeavlkelvktdiaittalipgkpapvliteemvtkmkpgsviidlaveaggn cplsepgkivvkhgvkivghtnvpsrvaadasplfaknllnfltphvdkdtktlvmkled etvsgtcvtrdgaivhpa
>1u28B (B:) mkiaipkerrpgedrvaispevvkklvglgfeviveqgagvgasitddaltaagatiast aaqalsqadvvwkvqrpmtaeegtdevalikegavlmchlgaltnrpvvealtkrkitay amelmprisraqsmdilssqsnlagyravidgayefarafpmmmtaagtvpparvlvfgv gvaglqaiatakrlgavvmatdvraatkeqveslggkfitvddeamktaetaggyakemg eefrkkqaeavlkelvktdiaittalipgkpapvliteemvtkmkpgsviidlaveaggn cplsepgkivvkhgvkivghtnvpsrvaadasplfaknllnfltphvdkdtktlvmkled etvsgtcvtrdgaivhpaltgqga
>1u28B (B:) mkiaipkerrpgedrvaispevvkklvglgfeviveqgagvgasitddaltaagatiast aaqalsqadvvwkvqrpmtaeegtdevalikegavlmchlgaltnrpvvealtkrkitay amelmprisraqsmdilssqsnlagyravidgayefarafpmmmtaagtvpparvlvfgv gvaglqaiatakrlgavvmatdvraatkeqveslggkfitvdrkkqaeavlkelvktdia ittalipgkpapvliteemvtkmkpgsviidlaveaggncplsepgkivvkhgvkivght nvpsrvaadasplfaknllnfltphvdkdktlvmkledetvsgtcvtrdgaivhpaltg
>1u28C (C:) mnrsifnvilggfgseggvaaaggaagdrsvkagsaedaafimknaskviivpgygmava qaqhalremadvlkkegvevsyaihpvagrmpghmnvllaeanvpydevfeleeinssfq tadvafvigandvtnpaaktdpsspiygmpildvekagtvlfikrsmasgyagvenelff rnntmmlfgdakkmteqivqamn
>1u28C (C:) svkagsaedaafimknaskviivpgygmavaqaqhalremadvlkkegvevsyaihpvag rmpghmnvllaeanvpydevfeleeinssfqtadvafvigandvtnpaaktdpsspiygm pildvekagtvlfikrsmasgyagvenelffrnntmmlfgdakkmteqivqamn