Chains and heterogens:
PDB Chain Sequences:
>1i6mA (A:) mktifsgiqpsgvitignyigalrqfvelqheyncyfcivdqhaitvwqdphelrqnirr laalylavgidptqatlfiqsevpahaqaawmlqcivyigelermtqfkeksagkeavsa glltypplmaadillyntdivpvgedqkqhieltrdlaerfnkrygelftipearipkvg arimslvdptkkmsksdpnpkayitllddaktiekkiksavtdsegtirydkeakpgisn llniystlsgqsieelerqyegkgygvfkadlaqvvietlrpiqeryhhwmeseeldrvl degaekanrvasemvrkmeqamglgr