Bioinorganic catalys is not that new but "artificial metalloenzymes" as it is called is a relatively new research area. But, I think it is one of the most amazing ones. Just think about it, you genetically modify an enzyme to do something else or to do something extra! How cool is that? For beginners, it is a nice review and starting point to dive into that world. Many examples of these enzymes and how single modifications can show dramatic effect on reactivity or selectivity.
It's open access!