“…Nevertheless, some useful enzymes have been reported comprising the ADHs from Sphingobium yanoikuyae (SyADH) (Lavandera et al, 2008a;Cuetos et al, 2012;Man et al, 2014), Ralstonia sp. (RasADH) (Lavandera et al, 2008a;Cuetos et al, 2012;Man et al, 2014), Sporobolomyces salmonicolor (SsADH) Li et al, 2009;Li et al, 2010;Chen et al, 2012) Kluyveromyces polysporus (KpADH) (Xu et al, 2018) Clostridium acetobutylicum (CaADH) (Applegate et al, 2011), hydroxysteroid dehydrogenases (Zhu et al, 2006a;Ferrandi et al, 2020) and enzymes from Kluyveromyces marxianus (Li et al, 2019) or Kluyveromyces polysporus (Xu et al, 2018;Zhou et al, 2020). A selection of bulky ketones reduced by ADHs is given in Figure 17.…”