You may include any references to papers as in: the use of JSmol in Proteopedia [1] or to the article describing Jmol [2] to the rescue.
Function
Bleomycin is a DNA cutting agent that is produced by actinomycetes. To protect themselves, these organisms have to sequester this lethal compound, which is achieved by a specific Bleomycin-binding protein (BBP) or Bleomycin-resistance protein (BRP).
The crystal structure of a BBP from Streptoalloteoichus hindustanus has been solved [3].
Another structure was solved in [4] .
A morphing from one structure to the other one is