>1po3B (B:) observed residues (from ATOM records)
vfehagardvirredfaktgattmrevlnripgvsapenngtgshdlamnfgirglnprl
asrstvlmdgipvpfapygqpqlslapvslgnmdaidvvrgggavrygpqsvggvvnfvt
raipqdfgieagvegqlsptssqnnpkethnlmvggtadngfgtallysgtrgsdwrehs
atriddlmlkskyapdevhtfnsllqyydgeadmpgglsradydadrwqstrpydrfwgr
rklaslgyqfqpdsqhkfniqgfytqtlrsgyleqgkritlsprnywvrgieprysqifm
igpsahevgvgyrylnesthemryytatssgqlpsgsspydrdtrsgteahawylddkid
ignwtitpgmrfehiesyqnnaitgtheevsynaplpalnvlyhltdswnlyantegsfg
tvqysqigkavqsgnvepekartwelgtryddgaltaemglflinfnnqydsnqtndtvt
argktrhtgletqarydlgtltptldnvsiyasyayvnaeirekgdtygnlvpfspkhkg
tlgvdykpgnwtfnlnsdfqssqfadnantvkesadgstgripgfmlwgarvaydfgpqm
adlnlafgvknifdqdyfirsyddnnkgiyagqprtlymqgslkf