Chains and heterogens:
PDB Chain Sequences:
>1i6lA (A:) mktifsgiqpsgvitignyigalrqfvelqheyncyfcivdqhaitvwqdphelrqnirr laalylavgidptqatlfiqsevpahaqaawmlqcivyigelermtqfkeksagkeavsa glltypplmaadillyntdivpvgedqkqhieltrdlaerfnkrygelftipearipkvg arimslvdptkkmsksdpnpkayitllddaktiekkiksavtdsegtirydkeakpgisn llniystlsgqsieelerqyegkgygvfkadlaqvvietlrpiqeryhhwmeseeldrvl degaekanrvasemvrkmeqamglgr