1. Sylvia S. Mader 2. Tyrosine (Tyr) 3. Glutamate (Glu) 4. Serine (Ser) 5. Histidine (His) 6. Aspartic acid (Asp) 7. Asparagines (Asn) 8. Cysteine (Cys) 9. Threonine (Thr) 10. Arginine (Arg) 11. Alanine (Ala) 12. Glutamine (Gln) 13. Valine (Val) 14. Leucine (Leu) 15. Isoleucine (Ile) 16. Proline (Pro) 17. Tryptophan (Trp) 18. Glycine (Gly) 19. Phenylalanine (Phe)20. Methionine (Met) 21. Lysine (Lys) 22. Messenger 23. Transfer 24. Ribosomal 25. Transcription 26. Translation27. 4.7 106 28. 3.3 109 29. 51342 30. RNA polymerase 31. Promoter 32. Transcription bubble 33. Initiation 34. Elongation 35. Termination 36. Mg2+ 37. Sigma factor 38. Terminator39. Hairpin 40. Promoter 41. Enhancer 42. Lactose operon 43. Tryptophan operon 44. Splicing 45. Polyadenylation 46. Prokaryotes 47. Eukaryotes 48. TATA boxes. 49. DNA-binding domain 50. Transcription-activating domain 51. Helix-turn-helix 52. Zinc finger 53. Helix-loop-helix 54. Leucine zipper 55. Basic zipper