Chains and heterogens:
PDB Chain Sequences:
>4cavA (A:) gprsqtqpvprfdetstdtggpikiidpekvskepdallegfewatldltnetelqelwd lltyhyveddnamfrfrysqsflhwalmspgwkkewhvgvratksrklvasicgvptein vrnqklkvveinflcihkklrskrltpvlikeitrrcylngiyqaiytagvvlptpvssc ryyhrpldwlklyevgfsplpagstkarqitknhlpsttstpglrpmepkdidtvhdllq rylsrfalnqaftreevdhwlvhkpetvkeqvvwayvvedpethkitdffsfynlestvi qnpkhdnvraaylyyyatetaftnnmkalkerllmlmndalilakkahfdvfnaltlhdn plfleqlkfgagdgqlhfylynyrtapvpggvneknlpdekrmggvgivml
>4cavA (A:) ggpikiidpekvskepdallegfewatldltnetelqelwdlltyhyveddnamfrfrys qsflhwalmspgwkkewhvgvratksrklvasicgvpteinvrnqklkvveinflcihkk lrskrltpvlikeitrrcylngiyqaiytagvvlptpvsscryyhrpldwlklyevgfsp lpagstkarqitknhlpsttstpglrpmepkdidtvhdllqrylsrfalnqaftreevdh wlvhkpetvkeqvvwayvvedpethkitdffsfynlestviqnpkhdnvraaylyyyate taftnnmkalkerllmlmndalilakkahfdvfnaltlhdnplfleqlkfgagdgqlhfy lynyrtapvpggvneknlpdekrmggvgivml