That's BS, and you should know it.
Here are two of the related patents: 1, 2.
They claim the structure itself, which is only possible due the legal loopholes which permit patenting biological information because it was in a "useful form", like purified DNA. By my count, the clock should have started running on that claim back in the 50s. They describe the use of the structure, to work with antibiotic modeling etc, as an embodiment of their invention, but that is not the real focus of the invention.
The patent itself should make it obvious that they aren't patenting a process or antibiotic: in the text check "D. Methods of Using the Atomic Coordinates of the 50S Ribosomal Subunit to Identify and Design Ligands of Interest". They cite tired old references such as "Molecular Modeling on the PC, 1998, John Wiley & Sons" (molecular modeling from 1998?!) and computer software packages like GRID (which could be used as part of an antibiotic design process). There is no specific example in the patent for actually using their structure to produce a particular antibiotic or drug. The text makes it blatantly clear that the processes they describe are nothing BUT prior art, and are only useful with the real focal point of the patent, which is the structure.
It's all just part of the game we play. Raw information is patented as "inventions" because we can, and it looks good on a resume and it's legal ammunition to throw around in this horribly broken system.