Chains and heterogens:
PDB Chain Sequences:
>3kr6A (A:) mdkfrvqgptklqgevtisgaknaalpilfaallaeepveiqnvpklkdvdtsmkllsql gakverdgsvhidardvnvfcapydlvktmrasiwalgplvarfgqgqvslpggctigar pvdlhisgleqlgatikleegyvkasvdgrlkgahivmdkvsvgatvtimcaatlaegtt iienaarepeivdtanflitlgakisgqgtdriviegverlgggvyrvlpdrietgtflv aaaisrgkiicrnaqpdtldavlaklrdagadievgedwisldmhgkrpkavnvrtaphp afptdmqaqftllnlvaegtgfitetvfenrfmhvpelsrmgahaeiesntvichgvekl sgaqvmatdlrasaslvlagciaegttvvdriyhidrgyeriedklralganiervkge