Chains and heterogens:
PDB Chain Sequences:
>1kmkA (A:) ifsvdkvradfpvlsrevnglplayldsaasaqkpsqvidaeaefyrhgyaavhrgihtl saqatekmenvrkraslfinarsaeelvfvrgtteginlvanswgnsnvragdniiisqm ehhanivpwqmlcarvgaelrviplnpdgtlqletlptlfdektrllaithvsnvlgten plaemitlahqhgakvlvdgaqavmhhpvdvqaldcdfyvfsghklygptgigilyvkea llqemppwegggsmiatvslsegttwtkapwrfeagtpntggiiglgaaleyvsalglnn iaeyeqnlmhyalsqlesvpdltlygpqnrlgviafnlgkhhaydvgsfldnygiavrtg hhcamplmayynvpamcraslamyntheevdrlvtglqrihrllg