Chains and heterogens:
PDB Chain Sequences:
>1hz4A (A:) eikdiredtmhaefnalraqvaindgnpdeaerlaklaleelppgwfysrivatsvlgev lhckgeltrslalmqqteqmarqhdvwhyalwsliqqseilfaqgflqtawetqekafql ineqhleqlpmheflvriraqllwawarldeaeasarsgievlssyqpqqqlqclamliq cslargdldnarsqlnrlenllgngkyhsdwisnankvrviywqmtgdkaaaanwlrhta kpefannhflqgqwrniaraqillgefepaeivleelnenarslrlmsdlnrnllllnql ywqagrksdaqrvlldalklanrtgfishfviegeamaqqlrqliqlntlpeleqhraqr ilrein