Chains and heterogens:
PDB Chain Sequences:
>1ejcA (A:) mdkfrvqgptrlqgevtisgaknaalpilfaallaeepveiqnvpklkdidttmklltql gtkverdgsvwidasnvnnfsapydlvktmrasiwalgplvarfgqgqvslpggcaigar pvdlhifgleklgaeikleegyvkasvngrlkgahivmdkvsvgatvtimsaatlaegtt iienaarepeivdtanflvalgakisgqgtdritiegverlgggvyrvlpdrietgtflv aaaisggkivcrnaqpdtldavlaklreagadietgedwisldmhgkrpkavtvrtaphp afptdmqaqftllnlvaegtgvitetifenrfmhvpelirmgahaeiesntvichgvekl sgaqvmatdlrasaslvlagciaegttvvdriyhidrgyeriedklralganiervkge