Chains and heterogens:
PDB Chain Sequences:
>1us2A (A:) mvaasegnvvievdmangwrgnasgstshsgitysadgvtfaalgdgvgavfdiarpttl edaviamvvnvsaefkaseanlqifaqlkedwskgewdclaasseltadtdltltctide dddkfnqtardvqvgiqakgtpagtitiksvtitlaqeaysanvdhlrdlapsdfpigva vsntdsatynlltnsreqavvkkhfnhltagnimkmsymqptegnfnftnadafvdwate nnmtvhghalvwhsdyqvpnfmknwagsaedflaaldthittivdhyeakgnlvswdvvn aaiddnspanfrttdsafyvksgnssvyierafqtaraadpavilyyndynieqnnaktt kmvdmvkdfqarsipidgvgfqmhvcmnypsianisaamkkvvdlgllvkiteldvavnq phcdaypankinplteaaqlaqkkrycdvvkayldtvpvnqrggisvwgttdantwldgl yreqfedekiswpllfdnnyndkpalrgfadaligtqctnthelhhhhhh
>1us2A (A:) ievdmangwrgnasgstshsgitysadgvtfaalgdgvgavfdiarpttledaviamvvn vsaefkaseanlqifaqlkedwskgewdclaasselttdltltctidedddkfnqtardv qvgiqakgtpagtitiksvtitlaysanvdhlrdlapsdfpigvavsntdsatynlltns reqavvkkhfnhltagnimkmsymqptegnfnftnadafvdwatennmtvhghalvwhsd yqvpnfmknwagsaedflaaldthittivdhyeakgnlvswdvvnaaiddnspanfrttd safyvksgnssvyierafqtaraadpavilyyndynieqnnakttkmvdmvkdfqarsip idgvgfqmhvcmnypsianisaamkkvvdlgllvkiteldvavnqphcdaypankinplt eaaqlaqkkrycdvvkayldtvpvnqrggisvwgttdantwldglyreqfedekiswpll fdnnyndkpalrgfadaligtqctnth