>1u28A (A:) observed residues (from ATOM records)
mkiaipkerrpgedrvaispevvkklvglgfeviveqgagvgasitddaltaagatiast
aaqalsqadvvwkvqrpmtaeegtdevalikegavlmchlgaltnrpvvealtkrkitay
amelmprisraqsmdilssqsnlagyravidgayefarafpmmmtaagtvpparvlvfgv
gvaglqaiatakrlgavvmatdvraatkeqveslggkfitvddeamktaetaggyakemg
eefrkkqaeavlkelvktdiaittalipgkpapvliteemvtkmkpgsviidlaveaggn
cplsepgkivvkhgvkivghtnvpsrvaadasplfaknllnfltphvdkdtktlvmkled
etvsgtcvtrdgaivhpa