>1xa6A (A:) observed residues (from ATOM records)
ppiwksylyqlqqeaprpkriicprevenrpkyygrefhgiisreqadellggvegayil
resqrqpgcytlalrfgnqtlnyrlfhdgkhfvgekrfesihdlvtdglitlyietkaae
yiskmttnpiyehigyatllryekthnfkvhtfrgphwceycanfmwgliaqgvrcsdcg
lnvhkqcskhvpndcqpdlkrikkvyccdlttlvkahntqrpmvvdicireiearglkse
glyrvsgftehiedvkmafdrdgekadisanvypdiniitgalklyfrdlpipvitydty
skfidaakisnaderleavhevlmllppahyetlrylmihlkkvtmnekdnfmnaenlgi
vfgptlmrppedstlttlhdmryqklivqilienedvlf