>5t54A (A:) observed residues (from ATOM records)
selsfnypnfqsveditfqggasprnetlqltptdsngipirqraghavysqpfqlrdts
fyttftfvirttsnspadgfaifiappdfpvkryggylglfepntatntsankvvavefd
twvntewkepryrhigidvnsivsvrvtrwqdkdvfsrsiatahvgydgiskiltafvty
pdggnyvlshvvdlaeifpgdvrigfsgatgqyetqyihswsfsststn