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Amino Acid Flashcards: 20 Side-Chain Structures & Codes

Learn the 20 standard amino acids with 120 flashcards for side-chain recognition and drawing, plus one- and three-letter code recall in both directions.

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O tej talii

These amino acid flashcards train the 20 standard amino acids as six separate recall tasks. You’ll practice side-chain structure → amino-acid name, amino-acid name → side-chain drawing, amino-acid name → three-letter code, three-letter code → amino-acid name, amino-acid name → one-letter code, and one-letter code → amino-acid name. Each target has its own card, so remembering a code never hides a missed structure.

The structure cards show only the variable side chain. A small Cα attachment marker fixes the convention without turning the shared amino-acid backbone into another recognition task; proline also shows the side chain’s connection to the backbone nitrogen. The diagrams use one neutral connectivity convention. They do not test pH-dependent charge states or stereochemistry.

The fixed sequence introduces each structure before its drawing prompt and each code before its reverse lookup for the same amino acid. It interleaves all six directions, keeps every same-amino-acid variant at least three unrelated cards apart, and separates visually or code-confusable concepts. The review scheduler handles longer-term spacing after installation.

The deck deliberately leaves out side-chain class labels because classification schemes vary. It also excludes pKa values, charge-state tables, isoelectric points, codons, nutrition categories, full-backbone recognition, nonstandard amino acids and ambiguous sequence symbols, peptide-bond and protein-folding trivia, and exam, clinical, disease, supplement, dietary, or pronunciation material. Those mappings either vary by convention or belong outside this focused side-chain-and-code recall set.

IUPAC-IUB nomenclature recommendations, NCBI’s overview of amino acids and their side chains, and the NCBI amino-acid code table were used only to verify common-knowledge facts. All prompts, answers, selection, order, molecular diagrams, metadata, and cover composition were created independently. No source or competitor prose, images, screenshots, trade dress, or logos were copied. Facts are not claimed as proprietary. The original wording, organization, metadata, diagrams, and cover are dedicated under CC0 1.0 to the extent applicable rights exist.

Karty w tej talii

  1. Karta 1

    Pytanie

    Side-chain diagram showing CH₂ joined to a five-membered ring containing NH and N from the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Histidine — side chain: Cα–CH₂–imidazolyl.

  2. Karta 2

    Pytanie

    Valine → three-letter code

    Odpowiedź

    Val

  3. Karta 3

    Pytanie

    Serine → one-letter code

    Odpowiedź

    S

  4. Karta 4

    Pytanie

    Side-chain diagram showing CH₂–C(=O)–NH₂ from the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Asparagine — side chain: Cα–CH₂–C(=O)–NH₂.

  5. Karta 5

    Pytanie

    Phenylalanine → three-letter code

    Odpowiedź

    Phe

  6. Karta 6

    Pytanie

    Lysine → one-letter code

    Odpowiedź

    K

  7. Karta 7

    Pytanie

    Side-chain diagram showing one CH₃ group bonded to the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Alanine — side chain: Cα–CH₃.

  8. Karta 8

    Pytanie

    Isoleucine → three-letter code

    Odpowiedź

    Ile

  9. Karta 9

    Pytanie

    Cysteine → one-letter code

    Odpowiedź

    C

  10. Karta 10

    Pytanie

    Side-chain diagram showing CH₂–C(=O)–OH from the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Aspartate — side chain: Cα–CH₂–C(=O)–OH.

  11. Karta 11

    Pytanie

    Tyrosine → three-letter code

    Odpowiedź

    Tyr

  12. Karta 12

    Pytanie

    Arginine → one-letter code

    Odpowiedź

    R

  13. Karta 13

    Pytanie

    Side-chain diagram showing three CH₂ groups linking the Cα and Nα attachment markers.

    Which amino acid has this side chain?

    Odpowiedź

    Proline — side chain: Cα–(CH₂)₃–Nα.

  14. Karta 14

    Pytanie

    Leucine → three-letter code

    Odpowiedź

    Leu

  15. Karta 15

    Pytanie

    Threonine → one-letter code

    Odpowiedź

    T

  16. Karta 16

    Pytanie

    Side-chain diagram showing CH₂–CH₂–C(=O)–NH₂ from the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Glutamine — side chain: Cα–CH₂–CH₂–C(=O)–NH₂.

  17. Karta 17

    Pytanie

    Tryptophan → three-letter code

    Odpowiedź

    Trp

  18. Karta 18

    Pytanie

    Methionine → one-letter code

    Odpowiedź

    M

  19. Karta 19

    Pytanie

    Side-chain diagram showing a hydrogen bonded to the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Glycine — side chain: Cα–H.

  20. Karta 20

    Pytanie

    Glutamate → three-letter code

    Odpowiedź

    Glu

  21. Karta 21

    Pytanie

    Val → amino-acid name

    Odpowiedź

    Valine

  22. Karta 22

    Pytanie

    S → amino-acid name

    Odpowiedź

    Serine

  23. Karta 23

    Pytanie

    Asparagine → three-letter code

    Odpowiedź

    Asn

  24. Karta 24

    Pytanie

    Phenylalanine → one-letter code

    Odpowiedź

    F

  25. Karta 25

    Pytanie

    Side-chain diagram showing (CH₂)₄–NH₂ from the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Lysine — side chain: Cα–(CH₂)₄–NH₂.

  26. Karta 26

    Pytanie

    Alanine → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing one CH₃ group bonded to the Cα attachment marker.

    Side chain: Cα–CH₃.

  27. Karta 27

    Pytanie

    Ile → amino-acid name

    Odpowiedź

    Isoleucine

  28. Karta 28

    Pytanie

    C → amino-acid name

    Odpowiedź

    Cysteine

  29. Karta 29

    Pytanie

    Aspartate → three-letter code

    Odpowiedź

    Asp

  30. Karta 30

    Pytanie

    Tyrosine → one-letter code

    Odpowiedź

    Y

  31. Karta 31

    Pytanie

    Side-chain diagram showing (CH₂)₃–NH–C(=NH)–NH₂ from the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Arginine — side chain: Cα–(CH₂)₃–NH–C(=NH)–NH₂.

  32. Karta 32

    Pytanie

    Proline → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing three CH₂ groups linking the Cα and Nα attachment markers.

    Side chain: Cα–(CH₂)₃–Nα.

  33. Karta 33

    Pytanie

    Leu → amino-acid name

    Odpowiedź

    Leucine

  34. Karta 34

    Pytanie

    T → amino-acid name

    Odpowiedź

    Threonine

  35. Karta 35

    Pytanie

    Glutamine → three-letter code

    Odpowiedź

    Gln

  36. Karta 36

    Pytanie

    Tryptophan → one-letter code

    Odpowiedź

    W

  37. Karta 37

    Pytanie

    Side-chain diagram showing CH₂–CH₂–S–CH₃ from the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Methionine — side chain: Cα–CH₂–CH₂–S–CH₃.

  38. Karta 38

    Pytanie

    Glycine → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing a hydrogen bonded to the Cα attachment marker.

    Side chain: Cα–H.

  39. Karta 39

    Pytanie

    Glu → amino-acid name

    Odpowiedź

    Glutamate

  40. Karta 40

    Pytanie

    Histidine → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing CH₂ joined to a five-membered ring containing NH and N from the Cα attachment marker.

    Side chain: Cα–CH₂–imidazolyl.

  41. Karta 41

    Pytanie

    K → amino-acid name

    Odpowiedź

    Lysine

  42. Karta 42

    Pytanie

    Alanine → three-letter code

    Odpowiedź

    Ala

  43. Karta 43

    Pytanie

    Isoleucine → one-letter code

    Odpowiedź

    I

  44. Karta 44

    Pytanie

    Side-chain diagram showing CH₂–SH from the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Cysteine — side chain: Cα–CH₂–SH.

  45. Karta 45

    Pytanie

    Aspartate → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing CH₂–C(=O)–OH from the Cα attachment marker.

    Side chain: Cα–CH₂–C(=O)–OH.

  46. Karta 46

    Pytanie

    Tyr → amino-acid name

    Odpowiedź

    Tyrosine

  47. Karta 47

    Pytanie

    R → amino-acid name

    Odpowiedź

    Arginine

  48. Karta 48

    Pytanie

    Proline → three-letter code

    Odpowiedź

    Pro

  49. Karta 49

    Pytanie

    Leucine → one-letter code

    Odpowiedź

    L

  50. Karta 50

    Pytanie

    Side-chain diagram showing CH bonded to OH and CH₃ from the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Threonine — side chain: Cα–CH(OH)–CH₃.

  51. Karta 51

    Pytanie

    Glutamine → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing CH₂–CH₂–C(=O)–NH₂ from the Cα attachment marker.

    Side chain: Cα–CH₂–CH₂–C(=O)–NH₂.

  52. Karta 52

    Pytanie

    Trp → amino-acid name

    Odpowiedź

    Tryptophan

  53. Karta 53

    Pytanie

    M → amino-acid name

    Odpowiedź

    Methionine

  54. Karta 54

    Pytanie

    Glycine → three-letter code

    Odpowiedź

    Gly

  55. Karta 55

    Pytanie

    Glutamate → one-letter code

    Odpowiedź

    E

  56. Karta 56

    Pytanie

    Histidine → three-letter code

    Odpowiedź

    His

  57. Karta 57

    Pytanie

    Valine → one-letter code

    Odpowiedź

    V

  58. Karta 58

    Pytanie

    Side-chain diagram showing CH₂–OH from the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Serine — side chain: Cα–CH₂–OH.

  59. Karta 59

    Pytanie

    Asparagine → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing CH₂–C(=O)–NH₂ from the Cα attachment marker.

    Side chain: Cα–CH₂–C(=O)–NH₂.

  60. Karta 60

    Pytanie

    Phe → amino-acid name

    Odpowiedź

    Phenylalanine

    Abstract molecular study scene with colorful ball-and-stick side-chain forms arranged around an open center.

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    Amino Acid Flashcards: 20 Side-Chain Structures & Codes

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  61. Karta 61

    Pytanie

    I → amino-acid name

    Odpowiedź

    Isoleucine

  62. Karta 62

    Pytanie

    Cysteine → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing CH₂–SH from the Cα attachment marker.

    Side chain: Cα–CH₂–SH.

  63. Karta 63

    Pytanie

    Aspartate → one-letter code

    Odpowiedź

    D

  64. Karta 64

    Pytanie

    Side-chain diagram showing CH₂ joined to a six-membered ring with an opposite OH group from the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Tyrosine — side chain: Cα–CH₂–C₆H₄–OH (para).

  65. Karta 65

    Pytanie

    Arginine → three-letter code

    Odpowiedź

    Arg

  66. Karta 66

    Pytanie

    Pro → amino-acid name

    Odpowiedź

    Proline

  67. Karta 67

    Pytanie

    L → amino-acid name

    Odpowiedź

    Leucine

  68. Karta 68

    Pytanie

    Threonine → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing CH bonded to OH and CH₃ from the Cα attachment marker.

    Side chain: Cα–CH(OH)–CH₃.

  69. Karta 69

    Pytanie

    Glutamine → one-letter code

    Odpowiedź

    Q

  70. Karta 70

    Pytanie

    Side-chain diagram showing the Cα attachment marker joined through CH₂ to position 3 of fused five- and six-membered rings containing NH.

    Which amino acid has this side chain?

    Odpowiedź

    Tryptophan — side chain: Cα–CH₂–indol-3-yl.

  71. Karta 71

    Pytanie

    Methionine → three-letter code

    Odpowiedź

    Met

  72. Karta 72

    Pytanie

    Gly → amino-acid name

    Odpowiedź

    Glycine

  73. Karta 73

    Pytanie

    E → amino-acid name

    Odpowiedź

    Glutamate

  74. Karta 74

    Pytanie

    His → amino-acid name

    Odpowiedź

    Histidine

  75. Karta 75

    Pytanie

    V → amino-acid name

    Odpowiedź

    Valine

  76. Karta 76

    Pytanie

    Serine → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing CH₂–OH from the Cα attachment marker.

    Side chain: Cα–CH₂–OH.

  77. Karta 77

    Pytanie

    Asparagine → one-letter code

    Odpowiedź

    N

  78. Karta 78

    Pytanie

    Side-chain diagram showing CH₂ joined to a six-membered ring with alternating double bonds from the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Phenylalanine — side chain: Cα–CH₂–C₆H₅.

  79. Karta 79

    Pytanie

    Lysine → three-letter code

    Odpowiedź

    Lys

  80. Karta 80

    Pytanie

    Ala → amino-acid name

    Odpowiedź

    Alanine

  81. Karta 81

    Pytanie

    Proline → one-letter code

    Odpowiedź

    P

  82. Karta 82

    Pytanie

    Side-chain diagram showing CH₂–CH with two terminal CH₃ branches from the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Leucine — side chain: Cα–CH₂–CH(CH₃)₂.

  83. Karta 83

    Pytanie

    Threonine → three-letter code

    Odpowiedź

    Thr

  84. Karta 84

    Pytanie

    Gln → amino-acid name

    Odpowiedź

    Glutamine

  85. Karta 85

    Pytanie

    W → amino-acid name

    Odpowiedź

    Tryptophan

  86. Karta 86

    Pytanie

    Methionine → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing CH₂–CH₂–S–CH₃ from the Cα attachment marker.

    Side chain: Cα–CH₂–CH₂–S–CH₃.

  87. Karta 87

    Pytanie

    Glycine → one-letter code

    Odpowiedź

    G

  88. Karta 88

    Pytanie

    Side-chain diagram showing CH₂–CH₂–C(=O)–OH from the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Glutamate — side chain: Cα–CH₂–CH₂–C(=O)–OH.

  89. Karta 89

    Pytanie

    Histidine → one-letter code

    Odpowiedź

    H

  90. Karta 90

    Pytanie

    Side-chain diagram showing CH bonded to two CH₃ branches from the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Valine — side chain: Cα–CH(CH₃)₂.

  91. Karta 91

    Pytanie

    Serine → three-letter code

    Odpowiedź

    Ser

  92. Karta 92

    Pytanie

    Asn → amino-acid name

    Odpowiedź

    Asparagine

  93. Karta 93

    Pytanie

    F → amino-acid name

    Odpowiedź

    Phenylalanine

  94. Karta 94

    Pytanie

    Lysine → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing (CH₂)₄–NH₂ from the Cα attachment marker.

    Side chain: Cα–(CH₂)₄–NH₂.

  95. Karta 95

    Pytanie

    Alanine → one-letter code

    Odpowiedź

    A

  96. Karta 96

    Pytanie

    Side-chain diagram showing CH with one CH₃ branch and one CH₂–CH₃ branch from the Cα attachment marker.

    Which amino acid has this side chain?

    Odpowiedź

    Isoleucine — side chain: Cα–CH(CH₃)–CH₂–CH₃.

  97. Karta 97

    Pytanie

    Cysteine → three-letter code

    Odpowiedź

    Cys

  98. Karta 98

    Pytanie

    Asp → amino-acid name

    Odpowiedź

    Aspartate

  99. Karta 99

    Pytanie

    Y → amino-acid name

    Odpowiedź

    Tyrosine

  100. Karta 100

    Pytanie

    Arginine → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing (CH₂)₃–NH–C(=NH)–NH₂ from the Cα attachment marker.

    Side chain: Cα–(CH₂)₃–NH–C(=NH)–NH₂.

  101. Karta 101

    Pytanie

    Ser → amino-acid name

    Odpowiedź

    Serine

  102. Karta 102

    Pytanie

    N → amino-acid name

    Odpowiedź

    Asparagine

  103. Karta 103

    Pytanie

    Phenylalanine → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing CH₂ joined to a six-membered ring with alternating double bonds from the Cα attachment marker.

    Side chain: Cα–CH₂–C₆H₅.

  104. Karta 104

    Pytanie

    Lys → amino-acid name

    Odpowiedź

    Lysine

  105. Karta 105

    Pytanie

    A → amino-acid name

    Odpowiedź

    Alanine

  106. Karta 106

    Pytanie

    Isoleucine → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing CH with one CH₃ branch and one CH₂–CH₃ branch from the Cα attachment marker.

    Side chain: Cα–CH(CH₃)–CH₂–CH₃.

  107. Karta 107

    Pytanie

    Cys → amino-acid name

    Odpowiedź

    Cysteine

  108. Karta 108

    Pytanie

    D → amino-acid name

    Odpowiedź

    Aspartate

  109. Karta 109

    Pytanie

    Tyrosine → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing CH₂ joined to a six-membered ring with an opposite OH group from the Cα attachment marker.

    Side chain: Cα–CH₂–C₆H₄–OH (para).

  110. Karta 110

    Pytanie

    Arg → amino-acid name

    Odpowiedź

    Arginine

  111. Karta 111

    Pytanie

    P → amino-acid name

    Odpowiedź

    Proline

  112. Karta 112

    Pytanie

    Leucine → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing CH₂–CH with two terminal CH₃ branches from the Cα attachment marker.

    Side chain: Cα–CH₂–CH(CH₃)₂.

  113. Karta 113

    Pytanie

    Thr → amino-acid name

    Odpowiedź

    Threonine

  114. Karta 114

    Pytanie

    Q → amino-acid name

    Odpowiedź

    Glutamine

  115. Karta 115

    Pytanie

    Tryptophan → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing the Cα attachment marker joined through CH₂ to position 3 of fused five- and six-membered rings containing NH.

    Side chain: Cα–CH₂–indol-3-yl.

  116. Karta 116

    Pytanie

    Met → amino-acid name

    Odpowiedź

    Methionine

  117. Karta 117

    Pytanie

    G → amino-acid name

    Odpowiedź

    Glycine

  118. Karta 118

    Pytanie

    Glutamate → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing CH₂–CH₂–C(=O)–OH from the Cα attachment marker.

    Side chain: Cα–CH₂–CH₂–C(=O)–OH.

  119. Karta 119

    Pytanie

    H → amino-acid name

    Odpowiedź

    Histidine

  120. Karta 120

    Pytanie

    Valine → draw or recall the side chain

    Odpowiedź

    Side-chain diagram showing CH bonded to two CH₃ branches from the Cα attachment marker.

    Side chain: Cα–CH(CH₃)₂.

Abstract molecular study scene with colorful ball-and-stick side-chain forms arranged around an open center.

120 kart

Amino Acid Flashcards: 20 Side-Chain Structures & Codes

Ucz się z tej talii za darmo

Otworzy się Nibomo, żeby od razu zacząć naukę.