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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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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.

Bu destedeki kartlar

  1. Kart 1

    Soru

    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?

    Cevap

    Histidine — side chain: Cα–CH₂–imidazolyl.

  2. Kart 2

    Soru

    Valine → three-letter code

    Cevap

    Val

  3. Kart 3

    Soru

    Serine → one-letter code

    Cevap

    S

  4. Kart 4

    Soru

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

    Which amino acid has this side chain?

    Cevap

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

  5. Kart 5

    Soru

    Phenylalanine → three-letter code

    Cevap

    Phe

  6. Kart 6

    Soru

    Lysine → one-letter code

    Cevap

    K

  7. Kart 7

    Soru

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

    Which amino acid has this side chain?

    Cevap

    Alanine — side chain: Cα–CH₃.

  8. Kart 8

    Soru

    Isoleucine → three-letter code

    Cevap

    Ile

  9. Kart 9

    Soru

    Cysteine → one-letter code

    Cevap

    C

  10. Kart 10

    Soru

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

    Which amino acid has this side chain?

    Cevap

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

  11. Kart 11

    Soru

    Tyrosine → three-letter code

    Cevap

    Tyr

  12. Kart 12

    Soru

    Arginine → one-letter code

    Cevap

    R

  13. Kart 13

    Soru

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

    Which amino acid has this side chain?

    Cevap

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

  14. Kart 14

    Soru

    Leucine → three-letter code

    Cevap

    Leu

  15. Kart 15

    Soru

    Threonine → one-letter code

    Cevap

    T

  16. Kart 16

    Soru

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

    Which amino acid has this side chain?

    Cevap

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

  17. Kart 17

    Soru

    Tryptophan → three-letter code

    Cevap

    Trp

  18. Kart 18

    Soru

    Methionine → one-letter code

    Cevap

    M

  19. Kart 19

    Soru

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

    Which amino acid has this side chain?

    Cevap

    Glycine — side chain: Cα–H.

  20. Kart 20

    Soru

    Glutamate → three-letter code

    Cevap

    Glu

  21. Kart 21

    Soru

    Val → amino-acid name

    Cevap

    Valine

  22. Kart 22

    Soru

    S → amino-acid name

    Cevap

    Serine

  23. Kart 23

    Soru

    Asparagine → three-letter code

    Cevap

    Asn

  24. Kart 24

    Soru

    Phenylalanine → one-letter code

    Cevap

    F

  25. Kart 25

    Soru

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

    Which amino acid has this side chain?

    Cevap

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

  26. Kart 26

    Soru

    Alanine → draw or recall the side chain

    Cevap

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

    Side chain: Cα–CH₃.

  27. Kart 27

    Soru

    Ile → amino-acid name

    Cevap

    Isoleucine

  28. Kart 28

    Soru

    C → amino-acid name

    Cevap

    Cysteine

  29. Kart 29

    Soru

    Aspartate → three-letter code

    Cevap

    Asp

  30. Kart 30

    Soru

    Tyrosine → one-letter code

    Cevap

    Y

  31. Kart 31

    Soru

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

    Which amino acid has this side chain?

    Cevap

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

  32. Kart 32

    Soru

    Proline → draw or recall the side chain

    Cevap

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

    Side chain: Cα–(CH₂)₃–Nα.

  33. Kart 33

    Soru

    Leu → amino-acid name

    Cevap

    Leucine

  34. Kart 34

    Soru

    T → amino-acid name

    Cevap

    Threonine

  35. Kart 35

    Soru

    Glutamine → three-letter code

    Cevap

    Gln

  36. Kart 36

    Soru

    Tryptophan → one-letter code

    Cevap

    W

  37. Kart 37

    Soru

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

    Which amino acid has this side chain?

    Cevap

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

  38. Kart 38

    Soru

    Glycine → draw or recall the side chain

    Cevap

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

    Side chain: Cα–H.

  39. Kart 39

    Soru

    Glu → amino-acid name

    Cevap

    Glutamate

  40. Kart 40

    Soru

    Histidine → draw or recall the side chain

    Cevap

    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. Kart 41

    Soru

    K → amino-acid name

    Cevap

    Lysine

  42. Kart 42

    Soru

    Alanine → three-letter code

    Cevap

    Ala

  43. Kart 43

    Soru

    Isoleucine → one-letter code

    Cevap

    I

  44. Kart 44

    Soru

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

    Which amino acid has this side chain?

    Cevap

    Cysteine — side chain: Cα–CH₂–SH.

  45. Kart 45

    Soru

    Aspartate → draw or recall the side chain

    Cevap

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

    Side chain: Cα–CH₂–C(=O)–OH.

  46. Kart 46

    Soru

    Tyr → amino-acid name

    Cevap

    Tyrosine

  47. Kart 47

    Soru

    R → amino-acid name

    Cevap

    Arginine

  48. Kart 48

    Soru

    Proline → three-letter code

    Cevap

    Pro

  49. Kart 49

    Soru

    Leucine → one-letter code

    Cevap

    L

  50. Kart 50

    Soru

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

    Which amino acid has this side chain?

    Cevap

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

  51. Kart 51

    Soru

    Glutamine → draw or recall the side chain

    Cevap

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

    Side chain: Cα–CH₂–CH₂–C(=O)–NH₂.

  52. Kart 52

    Soru

    Trp → amino-acid name

    Cevap

    Tryptophan

  53. Kart 53

    Soru

    M → amino-acid name

    Cevap

    Methionine

  54. Kart 54

    Soru

    Glycine → three-letter code

    Cevap

    Gly

  55. Kart 55

    Soru

    Glutamate → one-letter code

    Cevap

    E

  56. Kart 56

    Soru

    Histidine → three-letter code

    Cevap

    His

  57. Kart 57

    Soru

    Valine → one-letter code

    Cevap

    V

  58. Kart 58

    Soru

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

    Which amino acid has this side chain?

    Cevap

    Serine — side chain: Cα–CH₂–OH.

  59. Kart 59

    Soru

    Asparagine → draw or recall the side chain

    Cevap

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

    Side chain: Cα–CH₂–C(=O)–NH₂.

  60. Kart 60

    Soru

    Phe → amino-acid name

    Cevap

    Phenylalanine

    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

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  61. Kart 61

    Soru

    I → amino-acid name

    Cevap

    Isoleucine

  62. Kart 62

    Soru

    Cysteine → draw or recall the side chain

    Cevap

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

    Side chain: Cα–CH₂–SH.

  63. Kart 63

    Soru

    Aspartate → one-letter code

    Cevap

    D

  64. Kart 64

    Soru

    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?

    Cevap

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

  65. Kart 65

    Soru

    Arginine → three-letter code

    Cevap

    Arg

  66. Kart 66

    Soru

    Pro → amino-acid name

    Cevap

    Proline

  67. Kart 67

    Soru

    L → amino-acid name

    Cevap

    Leucine

  68. Kart 68

    Soru

    Threonine → draw or recall the side chain

    Cevap

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

    Side chain: Cα–CH(OH)–CH₃.

  69. Kart 69

    Soru

    Glutamine → one-letter code

    Cevap

    Q

  70. Kart 70

    Soru

    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?

    Cevap

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

  71. Kart 71

    Soru

    Methionine → three-letter code

    Cevap

    Met

  72. Kart 72

    Soru

    Gly → amino-acid name

    Cevap

    Glycine

  73. Kart 73

    Soru

    E → amino-acid name

    Cevap

    Glutamate

  74. Kart 74

    Soru

    His → amino-acid name

    Cevap

    Histidine

  75. Kart 75

    Soru

    V → amino-acid name

    Cevap

    Valine

  76. Kart 76

    Soru

    Serine → draw or recall the side chain

    Cevap

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

    Side chain: Cα–CH₂–OH.

  77. Kart 77

    Soru

    Asparagine → one-letter code

    Cevap

    N

  78. Kart 78

    Soru

    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?

    Cevap

    Phenylalanine — side chain: Cα–CH₂–C₆H₅.

  79. Kart 79

    Soru

    Lysine → three-letter code

    Cevap

    Lys

  80. Kart 80

    Soru

    Ala → amino-acid name

    Cevap

    Alanine

  81. Kart 81

    Soru

    Proline → one-letter code

    Cevap

    P

  82. Kart 82

    Soru

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

    Which amino acid has this side chain?

    Cevap

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

  83. Kart 83

    Soru

    Threonine → three-letter code

    Cevap

    Thr

  84. Kart 84

    Soru

    Gln → amino-acid name

    Cevap

    Glutamine

  85. Kart 85

    Soru

    W → amino-acid name

    Cevap

    Tryptophan

  86. Kart 86

    Soru

    Methionine → draw or recall the side chain

    Cevap

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

    Side chain: Cα–CH₂–CH₂–S–CH₃.

  87. Kart 87

    Soru

    Glycine → one-letter code

    Cevap

    G

  88. Kart 88

    Soru

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

    Which amino acid has this side chain?

    Cevap

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

  89. Kart 89

    Soru

    Histidine → one-letter code

    Cevap

    H

  90. Kart 90

    Soru

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

    Which amino acid has this side chain?

    Cevap

    Valine — side chain: Cα–CH(CH₃)₂.

  91. Kart 91

    Soru

    Serine → three-letter code

    Cevap

    Ser

  92. Kart 92

    Soru

    Asn → amino-acid name

    Cevap

    Asparagine

  93. Kart 93

    Soru

    F → amino-acid name

    Cevap

    Phenylalanine

  94. Kart 94

    Soru

    Lysine → draw or recall the side chain

    Cevap

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

    Side chain: Cα–(CH₂)₄–NH₂.

  95. Kart 95

    Soru

    Alanine → one-letter code

    Cevap

    A

  96. Kart 96

    Soru

    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?

    Cevap

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

  97. Kart 97

    Soru

    Cysteine → three-letter code

    Cevap

    Cys

  98. Kart 98

    Soru

    Asp → amino-acid name

    Cevap

    Aspartate

  99. Kart 99

    Soru

    Y → amino-acid name

    Cevap

    Tyrosine

  100. Kart 100

    Soru

    Arginine → draw or recall the side chain

    Cevap

    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. Kart 101

    Soru

    Ser → amino-acid name

    Cevap

    Serine

  102. Kart 102

    Soru

    N → amino-acid name

    Cevap

    Asparagine

  103. Kart 103

    Soru

    Phenylalanine → draw or recall the side chain

    Cevap

    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. Kart 104

    Soru

    Lys → amino-acid name

    Cevap

    Lysine

  105. Kart 105

    Soru

    A → amino-acid name

    Cevap

    Alanine

  106. Kart 106

    Soru

    Isoleucine → draw or recall the side chain

    Cevap

    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. Kart 107

    Soru

    Cys → amino-acid name

    Cevap

    Cysteine

  108. Kart 108

    Soru

    D → amino-acid name

    Cevap

    Aspartate

  109. Kart 109

    Soru

    Tyrosine → draw or recall the side chain

    Cevap

    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. Kart 110

    Soru

    Arg → amino-acid name

    Cevap

    Arginine

  111. Kart 111

    Soru

    P → amino-acid name

    Cevap

    Proline

  112. Kart 112

    Soru

    Leucine → draw or recall the side chain

    Cevap

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

    Side chain: Cα–CH₂–CH(CH₃)₂.

  113. Kart 113

    Soru

    Thr → amino-acid name

    Cevap

    Threonine

  114. Kart 114

    Soru

    Q → amino-acid name

    Cevap

    Glutamine

  115. Kart 115

    Soru

    Tryptophan → draw or recall the side chain

    Cevap

    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. Kart 116

    Soru

    Met → amino-acid name

    Cevap

    Methionine

  117. Kart 117

    Soru

    G → amino-acid name

    Cevap

    Glycine

  118. Kart 118

    Soru

    Glutamate → draw or recall the side chain

    Cevap

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

    Side chain: Cα–CH₂–CH₂–C(=O)–OH.

  119. Kart 119

    Soru

    H → amino-acid name

    Cevap

    Histidine

  120. Kart 120

    Soru

    Valine → draw or recall the side chain

    Cevap

    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

Bu desteyle ücretsiz çalış

Nibomo açılır ve hemen çalışmaya başlayabilirsiniz.