Chains and heterogens:
PDB Chain Sequences:
>1po3A (A:) hhhhhhhhhhaqvniapgsldkalnqyaahsgftlsvdasltrgkqsnglhgdydvesgl qqlldgsglqvkplgnnswtlepapapkedaltvvgdwlgdarendvfehagardvirre dfaktgattmrevlnripgvsapenngtgshdlamnfgirglnprlasrstvlmdgipvp fapygqpqlslapvslgnmdaidvvrgggavrygpqsvggvvnfvtraipqdfgieagve gqlsptssqnnpkethnlmvggtadngfgtallysgtrgsdwrehsatriddlmlkskya pdevhtfnsllqyydgeadmpgglsradydadrwqstrpydrfwgrrklaslgyqfqpds qhkfniqgfytqtlrsgyleqgkritlsprnywvrgieprysqifmigpsahevgvgyry lnesthemryytatssgqlpsgsspydrdtrsgteahawylddkidignwtitpgmrfeh iesyqnnaitgtheevsynaplpalnvlyhltdswnlyantegsfgtvqysqigkavqsg nvepekartwelgtryddgaltaemglflinfnnqydsnqtndtvtargktrhtgletqa rydlgtltptldnvsiyasyayvnaeirekgdtygnlvpfspkhkgtlgvdykpgnwtfn lnsdfqssqfadnantvkesadgstgripgfmlwgarvaydfgpqmadlnlafgvknifd qdyfirsyddnnkgiyagqprtlymqgslkf
>1po3A (A:) ndvfehagardvirredfaktgattmrevlnripgvsapenngtgshdlamnfgirglnp rlasrstvlmdgipvpfapygqpqlslapvslgnmdaidvvrgggavrygpqsvggvvnf vtraipqdfgieagvegqlsptssqnnpkethnlmvggtadngfgtallysgtrgsdwre hsatriddlmlkskyapdevhtfnsllqyydgeadmpgglsradydadrwqstrpydrfw grrklaslgyqfqpdsqhkfniqgfytqtlrsgyleqgkritlsprnywvrgieprysqi fmigpsahevgvgyrylnesthemryytatssgqlpsgsspydrdtrsgteahawylddk idignwtitpgmrfehiesyqnnaitgtheevsynaplpalnvlyhltdswnlyantegs fgtvqysqigkavqsgnvepekartwelgtryddgaltaemglflinfnnqydsnqtndt vtargktrhtgletqarydlgtltptldnvsiyasyayvnaeirekgdtygnlvpfspkh kgtlgvdykpgnwtfnlnsdfqssqfadnantvkesadgstgripgfmlwgarvaydfgp qmadlnlafgvknifdqdyfirsyddnnkgiyagqprtlymqgslkf
>1po3B (B:) hhhhhhhhhhaqvniapgsldkalnqyaahsgftlsvdasltrgkqsnglhgdydvesgl qqlldgsglqvkplgnnswtlepapapkedaltvvgdwlgdarendvfehagardvirre dfaktgattmrevlnripgvsapenngtgshdlamnfgirglnprlasrstvlmdgipvp fapygqpqlslapvslgnmdaidvvrgggavrygpqsvggvvnfvtraipqdfgieagve gqlsptssqnnpkethnlmvggtadngfgtallysgtrgsdwrehsatriddlmlkskya pdevhtfnsllqyydgeadmpgglsradydadrwqstrpydrfwgrrklaslgyqfqpds qhkfniqgfytqtlrsgyleqgkritlsprnywvrgieprysqifmigpsahevgvgyry lnesthemryytatssgqlpsgsspydrdtrsgteahawylddkidignwtitpgmrfeh iesyqnnaitgtheevsynaplpalnvlyhltdswnlyantegsfgtvqysqigkavqsg nvepekartwelgtryddgaltaemglflinfnnqydsnqtndtvtargktrhtgletqa rydlgtltptldnvsiyasyayvnaeirekgdtygnlvpfspkhkgtlgvdykpgnwtfn lnsdfqssqfadnantvkesadgstgripgfmlwgarvaydfgpqmadlnlafgvknifd qdyfirsyddnnkgiyagqprtlymqgslkf
>1po3B (B:) vfehagardvirredfaktgattmrevlnripgvsapenngtgshdlamnfgirglnprl asrstvlmdgipvpfapygqpqlslapvslgnmdaidvvrgggavrygpqsvggvvnfvt raipqdfgieagvegqlsptssqnnpkethnlmvggtadngfgtallysgtrgsdwrehs atriddlmlkskyapdevhtfnsllqyydgeadmpgglsradydadrwqstrpydrfwgr rklaslgyqfqpdsqhkfniqgfytqtlrsgyleqgkritlsprnywvrgieprysqifm igpsahevgvgyrylnesthemryytatssgqlpsgsspydrdtrsgteahawylddkid ignwtitpgmrfehiesyqnnaitgtheevsynaplpalnvlyhltdswnlyantegsfg tvqysqigkavqsgnvepekartwelgtryddgaltaemglflinfnnqydsnqtndtvt argktrhtgletqarydlgtltptldnvsiyasyayvnaeirekgdtygnlvpfspkhkg tlgvdykpgnwtfnlnsdfqssqfadnantvkesadgstgripgfmlwgarvaydfgpqm adlnlafgvknifdqdyfirsyddnnkgiyagqprtlymqgslkf