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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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Informazioni su questo mazzo

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.

Carte in questo mazzo

  1. Carta 1

    Domanda

    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?

    Risposta

    Histidine — side chain: Cα–CH₂–imidazolyl.

  2. Carta 2

    Domanda

    Valine → three-letter code

    Risposta

    Val

  3. Carta 3

    Domanda

    Serine → one-letter code

    Risposta

    S

  4. Carta 4

    Domanda

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

    Which amino acid has this side chain?

    Risposta

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

  5. Carta 5

    Domanda

    Phenylalanine → three-letter code

    Risposta

    Phe

  6. Carta 6

    Domanda

    Lysine → one-letter code

    Risposta

    K

  7. Carta 7

    Domanda

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

    Which amino acid has this side chain?

    Risposta

    Alanine — side chain: Cα–CH₃.

  8. Carta 8

    Domanda

    Isoleucine → three-letter code

    Risposta

    Ile

  9. Carta 9

    Domanda

    Cysteine → one-letter code

    Risposta

    C

  10. Carta 10

    Domanda

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

    Which amino acid has this side chain?

    Risposta

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

  11. Carta 11

    Domanda

    Tyrosine → three-letter code

    Risposta

    Tyr

  12. Carta 12

    Domanda

    Arginine → one-letter code

    Risposta

    R

  13. Carta 13

    Domanda

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

    Which amino acid has this side chain?

    Risposta

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

  14. Carta 14

    Domanda

    Leucine → three-letter code

    Risposta

    Leu

  15. Carta 15

    Domanda

    Threonine → one-letter code

    Risposta

    T

  16. Carta 16

    Domanda

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

    Which amino acid has this side chain?

    Risposta

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

  17. Carta 17

    Domanda

    Tryptophan → three-letter code

    Risposta

    Trp

  18. Carta 18

    Domanda

    Methionine → one-letter code

    Risposta

    M

  19. Carta 19

    Domanda

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

    Which amino acid has this side chain?

    Risposta

    Glycine — side chain: Cα–H.

  20. Carta 20

    Domanda

    Glutamate → three-letter code

    Risposta

    Glu

  21. Carta 21

    Domanda

    Val → amino-acid name

    Risposta

    Valine

  22. Carta 22

    Domanda

    S → amino-acid name

    Risposta

    Serine

  23. Carta 23

    Domanda

    Asparagine → three-letter code

    Risposta

    Asn

  24. Carta 24

    Domanda

    Phenylalanine → one-letter code

    Risposta

    F

  25. Carta 25

    Domanda

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

    Which amino acid has this side chain?

    Risposta

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

  26. Carta 26

    Domanda

    Alanine → draw or recall the side chain

    Risposta

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

    Side chain: Cα–CH₃.

  27. Carta 27

    Domanda

    Ile → amino-acid name

    Risposta

    Isoleucine

  28. Carta 28

    Domanda

    C → amino-acid name

    Risposta

    Cysteine

  29. Carta 29

    Domanda

    Aspartate → three-letter code

    Risposta

    Asp

  30. Carta 30

    Domanda

    Tyrosine → one-letter code

    Risposta

    Y

  31. Carta 31

    Domanda

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

    Which amino acid has this side chain?

    Risposta

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

  32. Carta 32

    Domanda

    Proline → draw or recall the side chain

    Risposta

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

    Side chain: Cα–(CH₂)₃–Nα.

  33. Carta 33

    Domanda

    Leu → amino-acid name

    Risposta

    Leucine

  34. Carta 34

    Domanda

    T → amino-acid name

    Risposta

    Threonine

  35. Carta 35

    Domanda

    Glutamine → three-letter code

    Risposta

    Gln

  36. Carta 36

    Domanda

    Tryptophan → one-letter code

    Risposta

    W

  37. Carta 37

    Domanda

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

    Which amino acid has this side chain?

    Risposta

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

  38. Carta 38

    Domanda

    Glycine → draw or recall the side chain

    Risposta

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

    Side chain: Cα–H.

  39. Carta 39

    Domanda

    Glu → amino-acid name

    Risposta

    Glutamate

  40. Carta 40

    Domanda

    Histidine → draw or recall the side chain

    Risposta

    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. Carta 41

    Domanda

    K → amino-acid name

    Risposta

    Lysine

  42. Carta 42

    Domanda

    Alanine → three-letter code

    Risposta

    Ala

  43. Carta 43

    Domanda

    Isoleucine → one-letter code

    Risposta

    I

  44. Carta 44

    Domanda

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

    Which amino acid has this side chain?

    Risposta

    Cysteine — side chain: Cα–CH₂–SH.

  45. Carta 45

    Domanda

    Aspartate → draw or recall the side chain

    Risposta

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

    Side chain: Cα–CH₂–C(=O)–OH.

  46. Carta 46

    Domanda

    Tyr → amino-acid name

    Risposta

    Tyrosine

  47. Carta 47

    Domanda

    R → amino-acid name

    Risposta

    Arginine

  48. Carta 48

    Domanda

    Proline → three-letter code

    Risposta

    Pro

  49. Carta 49

    Domanda

    Leucine → one-letter code

    Risposta

    L

  50. Carta 50

    Domanda

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

    Which amino acid has this side chain?

    Risposta

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

  51. Carta 51

    Domanda

    Glutamine → draw or recall the side chain

    Risposta

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

    Side chain: Cα–CH₂–CH₂–C(=O)–NH₂.

  52. Carta 52

    Domanda

    Trp → amino-acid name

    Risposta

    Tryptophan

  53. Carta 53

    Domanda

    M → amino-acid name

    Risposta

    Methionine

  54. Carta 54

    Domanda

    Glycine → three-letter code

    Risposta

    Gly

  55. Carta 55

    Domanda

    Glutamate → one-letter code

    Risposta

    E

  56. Carta 56

    Domanda

    Histidine → three-letter code

    Risposta

    His

  57. Carta 57

    Domanda

    Valine → one-letter code

    Risposta

    V

  58. Carta 58

    Domanda

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

    Which amino acid has this side chain?

    Risposta

    Serine — side chain: Cα–CH₂–OH.

  59. Carta 59

    Domanda

    Asparagine → draw or recall the side chain

    Risposta

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

    Side chain: Cα–CH₂–C(=O)–NH₂.

  60. Carta 60

    Domanda

    Phe → amino-acid name

    Risposta

    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. Carta 61

    Domanda

    I → amino-acid name

    Risposta

    Isoleucine

  62. Carta 62

    Domanda

    Cysteine → draw or recall the side chain

    Risposta

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

    Side chain: Cα–CH₂–SH.

  63. Carta 63

    Domanda

    Aspartate → one-letter code

    Risposta

    D

  64. Carta 64

    Domanda

    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?

    Risposta

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

  65. Carta 65

    Domanda

    Arginine → three-letter code

    Risposta

    Arg

  66. Carta 66

    Domanda

    Pro → amino-acid name

    Risposta

    Proline

  67. Carta 67

    Domanda

    L → amino-acid name

    Risposta

    Leucine

  68. Carta 68

    Domanda

    Threonine → draw or recall the side chain

    Risposta

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

    Side chain: Cα–CH(OH)–CH₃.

  69. Carta 69

    Domanda

    Glutamine → one-letter code

    Risposta

    Q

  70. Carta 70

    Domanda

    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?

    Risposta

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

  71. Carta 71

    Domanda

    Methionine → three-letter code

    Risposta

    Met

  72. Carta 72

    Domanda

    Gly → amino-acid name

    Risposta

    Glycine

  73. Carta 73

    Domanda

    E → amino-acid name

    Risposta

    Glutamate

  74. Carta 74

    Domanda

    His → amino-acid name

    Risposta

    Histidine

  75. Carta 75

    Domanda

    V → amino-acid name

    Risposta

    Valine

  76. Carta 76

    Domanda

    Serine → draw or recall the side chain

    Risposta

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

    Side chain: Cα–CH₂–OH.

  77. Carta 77

    Domanda

    Asparagine → one-letter code

    Risposta

    N

  78. Carta 78

    Domanda

    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?

    Risposta

    Phenylalanine — side chain: Cα–CH₂–C₆H₅.

  79. Carta 79

    Domanda

    Lysine → three-letter code

    Risposta

    Lys

  80. Carta 80

    Domanda

    Ala → amino-acid name

    Risposta

    Alanine

  81. Carta 81

    Domanda

    Proline → one-letter code

    Risposta

    P

  82. Carta 82

    Domanda

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

    Which amino acid has this side chain?

    Risposta

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

  83. Carta 83

    Domanda

    Threonine → three-letter code

    Risposta

    Thr

  84. Carta 84

    Domanda

    Gln → amino-acid name

    Risposta

    Glutamine

  85. Carta 85

    Domanda

    W → amino-acid name

    Risposta

    Tryptophan

  86. Carta 86

    Domanda

    Methionine → draw or recall the side chain

    Risposta

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

    Side chain: Cα–CH₂–CH₂–S–CH₃.

  87. Carta 87

    Domanda

    Glycine → one-letter code

    Risposta

    G

  88. Carta 88

    Domanda

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

    Which amino acid has this side chain?

    Risposta

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

  89. Carta 89

    Domanda

    Histidine → one-letter code

    Risposta

    H

  90. Carta 90

    Domanda

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

    Which amino acid has this side chain?

    Risposta

    Valine — side chain: Cα–CH(CH₃)₂.

  91. Carta 91

    Domanda

    Serine → three-letter code

    Risposta

    Ser

  92. Carta 92

    Domanda

    Asn → amino-acid name

    Risposta

    Asparagine

  93. Carta 93

    Domanda

    F → amino-acid name

    Risposta

    Phenylalanine

  94. Carta 94

    Domanda

    Lysine → draw or recall the side chain

    Risposta

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

    Side chain: Cα–(CH₂)₄–NH₂.

  95. Carta 95

    Domanda

    Alanine → one-letter code

    Risposta

    A

  96. Carta 96

    Domanda

    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?

    Risposta

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

  97. Carta 97

    Domanda

    Cysteine → three-letter code

    Risposta

    Cys

  98. Carta 98

    Domanda

    Asp → amino-acid name

    Risposta

    Aspartate

  99. Carta 99

    Domanda

    Y → amino-acid name

    Risposta

    Tyrosine

  100. Carta 100

    Domanda

    Arginine → draw or recall the side chain

    Risposta

    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. Carta 101

    Domanda

    Ser → amino-acid name

    Risposta

    Serine

  102. Carta 102

    Domanda

    N → amino-acid name

    Risposta

    Asparagine

  103. Carta 103

    Domanda

    Phenylalanine → draw or recall the side chain

    Risposta

    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. Carta 104

    Domanda

    Lys → amino-acid name

    Risposta

    Lysine

  105. Carta 105

    Domanda

    A → amino-acid name

    Risposta

    Alanine

  106. Carta 106

    Domanda

    Isoleucine → draw or recall the side chain

    Risposta

    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. Carta 107

    Domanda

    Cys → amino-acid name

    Risposta

    Cysteine

  108. Carta 108

    Domanda

    D → amino-acid name

    Risposta

    Aspartate

  109. Carta 109

    Domanda

    Tyrosine → draw or recall the side chain

    Risposta

    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. Carta 110

    Domanda

    Arg → amino-acid name

    Risposta

    Arginine

  111. Carta 111

    Domanda

    P → amino-acid name

    Risposta

    Proline

  112. Carta 112

    Domanda

    Leucine → draw or recall the side chain

    Risposta

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

    Side chain: Cα–CH₂–CH(CH₃)₂.

  113. Carta 113

    Domanda

    Thr → amino-acid name

    Risposta

    Threonine

  114. Carta 114

    Domanda

    Q → amino-acid name

    Risposta

    Glutamine

  115. Carta 115

    Domanda

    Tryptophan → draw or recall the side chain

    Risposta

    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. Carta 116

    Domanda

    Met → amino-acid name

    Risposta

    Methionine

  117. Carta 117

    Domanda

    G → amino-acid name

    Risposta

    Glycine

  118. Carta 118

    Domanda

    Glutamate → draw or recall the side chain

    Risposta

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

    Side chain: Cα–CH₂–CH₂–C(=O)–OH.

  119. Carta 119

    Domanda

    H → amino-acid name

    Risposta

    Histidine

  120. Carta 120

    Domanda

    Valine → draw or recall the side chain

    Risposta

    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 carte

Amino Acid Flashcards: 20 Side-Chain Structures & Codes

Studia questo mazzo gratis

Nibomo si apre e puoi iniziare a studiare.