>4p6tB (B:) observed residues (from ATOM records)
kyrvrknvlhltdtekrdfvrtvlilkekgiydryiawhgaagkfhtppgsdrnaahmss
aflpwhreyllrferdlqsinpevtlpywewetdaqmqdpsqsqiwsadfmggngnpikd
fivdtgpfaagrwttideqgnpsgglkrnfgatkeaptlptrddvlnalkitqydtppwd
mtsqnsfrnqlegfingpqlhnrvhrwvggqmgvvptapndpvfflhhanvdriwavwqi
ihrnqnyqpmkngpfgqnfrdpmypwnttpedvmnhrklgyvydie