>1bxtB (B:) observed residues (from ATOM records)
ssqpdptpeqlnkssqftgvmgnlrclydnhfvegtnvrstgqllqhdlifpikdlklkn
ydsvktefnskdlatkyknkdvdifgsnyyyncyyktcmyggvtehhrnqiegkfpnitv
kvyednenilsfdittnkkqvtvqeldcktrkilvsrknlyefnnspyetgyikfiessg
dsfwydmmpapgaifdqskylmlyndnktvsssaiaievhltkk