Chains and heterogens:
PDB Chain Sequences:
>4n28A (A:) mghhhhhhhhhhssghiegrhmlrertvrlqygsrveavyvlgtylwtdvysaapagaqt fslkhsehvwvevvrdgeaeevatngkqrwllspsttlrvtmsqasteassdkvtvnyyd eegsipidqaglfltaieisldvdadrdgvveknnpkkaswtwgpegqgaillvncdret pwlpkedcrdekvyskedlkdmsqmilrtkgpdrlpagyeivlyismsdsdkvgvfyven pffgqryihilgrrklyhvvkytggsaellffveglcfpdegfsglvsihvslleymaqd ipltpiftdtvifriapwimtpnilppvsvfvccmkdnylflkevknlvektncelkvcf qylnrgdrwiqdeiefgyieaphkgfpvvldsprdgnlkdfpvkellgpdfgyvtreplf esvtsldsfgnlevsppvtvngktyplgriligssfplsggrrmtkvvrdflkaqqvqap velysdwltvghvdefmsfvpipgtkkflllmastsacyklfrekqkdghgeaimfkglg gmsskritinkilsneslvqenlyfqrcldwnrdilkkelglteqdiidlpalfkmdedh raraffpnmvnmivldkdlgipkpfgpqveeecclemhvrglleplglectfiddisayh kflgevhcgtnvrrkpftfkwwhmvpsrrs
>4n28A (A:) rertvrlqygsrveavyvlgtylwtdvysaapagaqtfslkhsehvwvevvrdgeaeeva tngkqrwllspsttlrvtmsqasteassdkvtvnyydeegsipidqaglfltaieisldv dadrdgvveknnpkkaswtwgpegqgaillvncdretpwlpkedcrdekvyskedlkdms qmilrtkgpdrlpagyeivlyismsdsdkvgvfyvenpffgqryihilgrrklyhvvkyt ggsaellffveglcfpdegfsglvsihvslleymaqdipltpiftdtvifriapwimtpn ilppvsvfvccmkdnylflkevknlvektncelkvcfdrwiqdeiefgyieaphkgfpvv ldsprdgnlkdfpvkellgpdfgyvtreplfesvtsldsfgnlevsppvtvngktyplgr iligssfplsggrrmtkvvrdflkaqqvqapvelysdwltvghvdefmsfvpipgtkkfl llmastsacyklfrekqkdghgeaimfkglggmsskritinkilsneslvqenlyfqrcl dwnrdilkkelglteqdiidlpalfkmdedhraraffpnmvnmivldkdlgipkpfgpqv eeecclemhvrglleplglectfiddisayhkflgevhcgtnvrrkpftfkwwhmvpsr