Chains and heterogens:
PDB Chain Sequences:
>1iow_ (-) mtdkiavllggtsaerevslnsgaavlaglreggidaypvdpkevdvtqlksmgfqkvfi alhgrggedgtlqgmlelmglpytgsgvmasalsmdklrskllwqgaglpvapwvaltra efekglsdkqlaeisalglpvivkpsregssvgmskvvaenalqdalrlafqhdeevlie kwlsgpeftvailgeeilpsiriqpsgtfydyeakflsdetqyfcpagleasqeanlqal vlkawttlgckgwgridvmldsdgqfylleantspgmtshslvpmaarqagmsfsqlvvr ilelad