fructokinase

The story

1. Proto-Indo-European*bʰrewHg-
2. Proto-Indo-European*bʰruHgyéti
3. Proto-Italic*frūgjōr
4. Proto-Italic*frūjōr
5. Latinfruor
6. Latinfrūctus
7. Englishfructo-
8. Proto-Indo-European*keyh₂-
9. Ancient Greekκινέω (kinéō)
10. Proto-Indo-European*dwóh₁
11. Proto-Indo-European*trísinflu.
12. Proto-Indo-European*dwís
13. Ancient Greekδιά (diá)
14. Ancient Greekδῐᾰ- (dĭă-)
15. Proto-Indo-European*steh₂-
16. Proto-Indo-European*stísteh₂ti
17. Proto-Hellenic*hístāmi
18. Ancient Greekῐ̔́στημῐ (hĭ́stēmĭ)
19. Ancient Greekδῐῐ̈́στημῐ (dĭĭ̈́stēmĭ)
20. Ancient Greekδῐᾰ́στᾰσῐς (dĭắstăsĭs)
21. Englishdiastase
22. Englishkinase
23. English todayfructokinase

From fructo- + kinase.