Chains and heterogens:
PDB Chain Sequences:
>1i39A (A:) mkagideagkgcvigplvvagvacsdedrlrklgvkdskklsqgrreelaeeirkicrte vlkvspenldermaaktineilkecyaeiilrlkpeiayvdspdviperlsreleeitgl rvvaehkadekyplvaaasiiakverereierlkekfgdfgsgyasdprtrevlkewias gripscvrmrwktvsnlrqk