Chains and heterogens:
PDB Chain Sequences:
>3r7tA (A:) snamskadiivgiqwgdegkgkvvdklcenydfvcrsagghnaghtiwvngvryalhlmp sgvlhprciniigngvvvspevliaemaqfenlkgrlyisdrahlnlkhhslidiakekl kgknaigttgkgigpsyadkinrtghrvgellepqrlcealikdfeanktffemleieip saeelladlkrfneiltpyitdttrmlwkaldedkrvllegaqgsmldidhgtypyvtss stisagtltglglnpkeagniigivkayatrvgngafptedkgedgekiaqigkeigvst grkrrcgwfdavavrytarlngldalslmkldvldgfekikicrayeykgmeidyipsdl envqpiyeemdgwdkvfgikdydllpenakkyiarleelagvkvkyistsperddtiil
>3r7tA (A:) mskadiivgiqwgdegkgkvvdklcenydfvcrsagghnaghtiwvngvryalhlmpsgv lhprciniigngvvvspevliaemaqfenlkgrlyisdrahlnlkhhslidiakeklkgk gigpsyadkinrtghrvgellepqrlcealikdfeanktffemleieipsaeelladlkr fneiltpyitdttrmlwkaldedkrvllegaqgsmldidhgtypyvtssstisagtltgl glnpkeagniigivkayatrvgngafptedkgedgekiaqigkeigvstgrkrrcgwfda vavrytarlngldalslmkldvldgfekikicrayeykgmeidyipsdlenvqpiyeemd gwdkvfgikdydllpenakkyiarleelagvkvkyistsperddtiil