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.

Về bộ thẻ này

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.

Thẻ trong bộ này

  1. Thẻ 1

    Câu hỏi

    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?

    Câu trả lời

    Histidine — side chain: Cα–CH₂–imidazolyl.

  2. Thẻ 2

    Câu hỏi

    Valine → three-letter code

    Câu trả lời

    Val

  3. Thẻ 3

    Câu hỏi

    Serine → one-letter code

    Câu trả lời

    S

  4. Thẻ 4

    Câu hỏi

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

    Which amino acid has this side chain?

    Câu trả lời

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

  5. Thẻ 5

    Câu hỏi

    Phenylalanine → three-letter code

    Câu trả lời

    Phe

  6. Thẻ 6

    Câu hỏi

    Lysine → one-letter code

    Câu trả lời

    K

  7. Thẻ 7

    Câu hỏi

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

    Which amino acid has this side chain?

    Câu trả lời

    Alanine — side chain: Cα–CH₃.

  8. Thẻ 8

    Câu hỏi

    Isoleucine → three-letter code

    Câu trả lời

    Ile

  9. Thẻ 9

    Câu hỏi

    Cysteine → one-letter code

    Câu trả lời

    C

  10. Thẻ 10

    Câu hỏi

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

    Which amino acid has this side chain?

    Câu trả lời

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

  11. Thẻ 11

    Câu hỏi

    Tyrosine → three-letter code

    Câu trả lời

    Tyr

  12. Thẻ 12

    Câu hỏi

    Arginine → one-letter code

    Câu trả lời

    R

  13. Thẻ 13

    Câu hỏi

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

    Which amino acid has this side chain?

    Câu trả lời

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

  14. Thẻ 14

    Câu hỏi

    Leucine → three-letter code

    Câu trả lời

    Leu

  15. Thẻ 15

    Câu hỏi

    Threonine → one-letter code

    Câu trả lời

    T

  16. Thẻ 16

    Câu hỏi

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

    Which amino acid has this side chain?

    Câu trả lời

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

  17. Thẻ 17

    Câu hỏi

    Tryptophan → three-letter code

    Câu trả lời

    Trp

  18. Thẻ 18

    Câu hỏi

    Methionine → one-letter code

    Câu trả lời

    M

  19. Thẻ 19

    Câu hỏi

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

    Which amino acid has this side chain?

    Câu trả lời

    Glycine — side chain: Cα–H.

  20. Thẻ 20

    Câu hỏi

    Glutamate → three-letter code

    Câu trả lời

    Glu

  21. Thẻ 21

    Câu hỏi

    Val → amino-acid name

    Câu trả lời

    Valine

  22. Thẻ 22

    Câu hỏi

    S → amino-acid name

    Câu trả lời

    Serine

  23. Thẻ 23

    Câu hỏi

    Asparagine → three-letter code

    Câu trả lời

    Asn

  24. Thẻ 24

    Câu hỏi

    Phenylalanine → one-letter code

    Câu trả lời

    F

  25. Thẻ 25

    Câu hỏi

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

    Which amino acid has this side chain?

    Câu trả lời

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

  26. Thẻ 26

    Câu hỏi

    Alanine → draw or recall the side chain

    Câu trả lời

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

    Side chain: Cα–CH₃.

  27. Thẻ 27

    Câu hỏi

    Ile → amino-acid name

    Câu trả lời

    Isoleucine

  28. Thẻ 28

    Câu hỏi

    C → amino-acid name

    Câu trả lời

    Cysteine

  29. Thẻ 29

    Câu hỏi

    Aspartate → three-letter code

    Câu trả lời

    Asp

  30. Thẻ 30

    Câu hỏi

    Tyrosine → one-letter code

    Câu trả lời

    Y

  31. Thẻ 31

    Câu hỏi

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

    Which amino acid has this side chain?

    Câu trả lời

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

  32. Thẻ 32

    Câu hỏi

    Proline → draw or recall the side chain

    Câu trả lời

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

    Side chain: Cα–(CH₂)₃–Nα.

  33. Thẻ 33

    Câu hỏi

    Leu → amino-acid name

    Câu trả lời

    Leucine

  34. Thẻ 34

    Câu hỏi

    T → amino-acid name

    Câu trả lời

    Threonine

  35. Thẻ 35

    Câu hỏi

    Glutamine → three-letter code

    Câu trả lời

    Gln

  36. Thẻ 36

    Câu hỏi

    Tryptophan → one-letter code

    Câu trả lời

    W

  37. Thẻ 37

    Câu hỏi

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

    Which amino acid has this side chain?

    Câu trả lời

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

  38. Thẻ 38

    Câu hỏi

    Glycine → draw or recall the side chain

    Câu trả lời

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

    Side chain: Cα–H.

  39. Thẻ 39

    Câu hỏi

    Glu → amino-acid name

    Câu trả lời

    Glutamate

  40. Thẻ 40

    Câu hỏi

    Histidine → draw or recall the side chain

    Câu trả lời

    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. Thẻ 41

    Câu hỏi

    K → amino-acid name

    Câu trả lời

    Lysine

  42. Thẻ 42

    Câu hỏi

    Alanine → three-letter code

    Câu trả lời

    Ala

  43. Thẻ 43

    Câu hỏi

    Isoleucine → one-letter code

    Câu trả lời

    I

  44. Thẻ 44

    Câu hỏi

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

    Which amino acid has this side chain?

    Câu trả lời

    Cysteine — side chain: Cα–CH₂–SH.

  45. Thẻ 45

    Câu hỏi

    Aspartate → draw or recall the side chain

    Câu trả lời

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

    Side chain: Cα–CH₂–C(=O)–OH.

  46. Thẻ 46

    Câu hỏi

    Tyr → amino-acid name

    Câu trả lời

    Tyrosine

  47. Thẻ 47

    Câu hỏi

    R → amino-acid name

    Câu trả lời

    Arginine

  48. Thẻ 48

    Câu hỏi

    Proline → three-letter code

    Câu trả lời

    Pro

  49. Thẻ 49

    Câu hỏi

    Leucine → one-letter code

    Câu trả lời

    L

  50. Thẻ 50

    Câu hỏi

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

    Which amino acid has this side chain?

    Câu trả lời

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

  51. Thẻ 51

    Câu hỏi

    Glutamine → draw or recall the side chain

    Câu trả lời

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

    Side chain: Cα–CH₂–CH₂–C(=O)–NH₂.

  52. Thẻ 52

    Câu hỏi

    Trp → amino-acid name

    Câu trả lời

    Tryptophan

  53. Thẻ 53

    Câu hỏi

    M → amino-acid name

    Câu trả lời

    Methionine

  54. Thẻ 54

    Câu hỏi

    Glycine → three-letter code

    Câu trả lời

    Gly

  55. Thẻ 55

    Câu hỏi

    Glutamate → one-letter code

    Câu trả lời

    E

  56. Thẻ 56

    Câu hỏi

    Histidine → three-letter code

    Câu trả lời

    His

  57. Thẻ 57

    Câu hỏi

    Valine → one-letter code

    Câu trả lời

    V

  58. Thẻ 58

    Câu hỏi

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

    Which amino acid has this side chain?

    Câu trả lời

    Serine — side chain: Cα–CH₂–OH.

  59. Thẻ 59

    Câu hỏi

    Asparagine → draw or recall the side chain

    Câu trả lời

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

    Side chain: Cα–CH₂–C(=O)–NH₂.

  60. Thẻ 60

    Câu hỏi

    Phe → amino-acid name

    Câu trả lời

    Phenylalanine

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

    120 thẻ

    Amino Acid Flashcards: 20 Side-Chain Structures & Codes

    Học bộ thẻ này miễn phí

    Nibomo sẽ mở ra để bạn bắt đầu học.

  61. Thẻ 61

    Câu hỏi

    I → amino-acid name

    Câu trả lời

    Isoleucine

  62. Thẻ 62

    Câu hỏi

    Cysteine → draw or recall the side chain

    Câu trả lời

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

    Side chain: Cα–CH₂–SH.

  63. Thẻ 63

    Câu hỏi

    Aspartate → one-letter code

    Câu trả lời

    D

  64. Thẻ 64

    Câu hỏi

    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?

    Câu trả lời

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

  65. Thẻ 65

    Câu hỏi

    Arginine → three-letter code

    Câu trả lời

    Arg

  66. Thẻ 66

    Câu hỏi

    Pro → amino-acid name

    Câu trả lời

    Proline

  67. Thẻ 67

    Câu hỏi

    L → amino-acid name

    Câu trả lời

    Leucine

  68. Thẻ 68

    Câu hỏi

    Threonine → draw or recall the side chain

    Câu trả lời

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

    Side chain: Cα–CH(OH)–CH₃.

  69. Thẻ 69

    Câu hỏi

    Glutamine → one-letter code

    Câu trả lời

    Q

  70. Thẻ 70

    Câu hỏi

    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?

    Câu trả lời

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

  71. Thẻ 71

    Câu hỏi

    Methionine → three-letter code

    Câu trả lời

    Met

  72. Thẻ 72

    Câu hỏi

    Gly → amino-acid name

    Câu trả lời

    Glycine

  73. Thẻ 73

    Câu hỏi

    E → amino-acid name

    Câu trả lời

    Glutamate

  74. Thẻ 74

    Câu hỏi

    His → amino-acid name

    Câu trả lời

    Histidine

  75. Thẻ 75

    Câu hỏi

    V → amino-acid name

    Câu trả lời

    Valine

  76. Thẻ 76

    Câu hỏi

    Serine → draw or recall the side chain

    Câu trả lời

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

    Side chain: Cα–CH₂–OH.

  77. Thẻ 77

    Câu hỏi

    Asparagine → one-letter code

    Câu trả lời

    N

  78. Thẻ 78

    Câu hỏi

    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?

    Câu trả lời

    Phenylalanine — side chain: Cα–CH₂–C₆H₅.

  79. Thẻ 79

    Câu hỏi

    Lysine → three-letter code

    Câu trả lời

    Lys

  80. Thẻ 80

    Câu hỏi

    Ala → amino-acid name

    Câu trả lời

    Alanine

  81. Thẻ 81

    Câu hỏi

    Proline → one-letter code

    Câu trả lời

    P

  82. Thẻ 82

    Câu hỏi

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

    Which amino acid has this side chain?

    Câu trả lời

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

  83. Thẻ 83

    Câu hỏi

    Threonine → three-letter code

    Câu trả lời

    Thr

  84. Thẻ 84

    Câu hỏi

    Gln → amino-acid name

    Câu trả lời

    Glutamine

  85. Thẻ 85

    Câu hỏi

    W → amino-acid name

    Câu trả lời

    Tryptophan

  86. Thẻ 86

    Câu hỏi

    Methionine → draw or recall the side chain

    Câu trả lời

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

    Side chain: Cα–CH₂–CH₂–S–CH₃.

  87. Thẻ 87

    Câu hỏi

    Glycine → one-letter code

    Câu trả lời

    G

  88. Thẻ 88

    Câu hỏi

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

    Which amino acid has this side chain?

    Câu trả lời

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

  89. Thẻ 89

    Câu hỏi

    Histidine → one-letter code

    Câu trả lời

    H

  90. Thẻ 90

    Câu hỏi

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

    Which amino acid has this side chain?

    Câu trả lời

    Valine — side chain: Cα–CH(CH₃)₂.

  91. Thẻ 91

    Câu hỏi

    Serine → three-letter code

    Câu trả lời

    Ser

  92. Thẻ 92

    Câu hỏi

    Asn → amino-acid name

    Câu trả lời

    Asparagine

  93. Thẻ 93

    Câu hỏi

    F → amino-acid name

    Câu trả lời

    Phenylalanine

  94. Thẻ 94

    Câu hỏi

    Lysine → draw or recall the side chain

    Câu trả lời

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

    Side chain: Cα–(CH₂)₄–NH₂.

  95. Thẻ 95

    Câu hỏi

    Alanine → one-letter code

    Câu trả lời

    A

  96. Thẻ 96

    Câu hỏi

    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?

    Câu trả lời

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

  97. Thẻ 97

    Câu hỏi

    Cysteine → three-letter code

    Câu trả lời

    Cys

  98. Thẻ 98

    Câu hỏi

    Asp → amino-acid name

    Câu trả lời

    Aspartate

  99. Thẻ 99

    Câu hỏi

    Y → amino-acid name

    Câu trả lời

    Tyrosine

  100. Thẻ 100

    Câu hỏi

    Arginine → draw or recall the side chain

    Câu trả lời

    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. Thẻ 101

    Câu hỏi

    Ser → amino-acid name

    Câu trả lời

    Serine

  102. Thẻ 102

    Câu hỏi

    N → amino-acid name

    Câu trả lời

    Asparagine

  103. Thẻ 103

    Câu hỏi

    Phenylalanine → draw or recall the side chain

    Câu trả lời

    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. Thẻ 104

    Câu hỏi

    Lys → amino-acid name

    Câu trả lời

    Lysine

  105. Thẻ 105

    Câu hỏi

    A → amino-acid name

    Câu trả lời

    Alanine

  106. Thẻ 106

    Câu hỏi

    Isoleucine → draw or recall the side chain

    Câu trả lời

    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. Thẻ 107

    Câu hỏi

    Cys → amino-acid name

    Câu trả lời

    Cysteine

  108. Thẻ 108

    Câu hỏi

    D → amino-acid name

    Câu trả lời

    Aspartate

  109. Thẻ 109

    Câu hỏi

    Tyrosine → draw or recall the side chain

    Câu trả lời

    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. Thẻ 110

    Câu hỏi

    Arg → amino-acid name

    Câu trả lời

    Arginine

  111. Thẻ 111

    Câu hỏi

    P → amino-acid name

    Câu trả lời

    Proline

  112. Thẻ 112

    Câu hỏi

    Leucine → draw or recall the side chain

    Câu trả lời

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

    Side chain: Cα–CH₂–CH(CH₃)₂.

  113. Thẻ 113

    Câu hỏi

    Thr → amino-acid name

    Câu trả lời

    Threonine

  114. Thẻ 114

    Câu hỏi

    Q → amino-acid name

    Câu trả lời

    Glutamine

  115. Thẻ 115

    Câu hỏi

    Tryptophan → draw or recall the side chain

    Câu trả lời

    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. Thẻ 116

    Câu hỏi

    Met → amino-acid name

    Câu trả lời

    Methionine

  117. Thẻ 117

    Câu hỏi

    G → amino-acid name

    Câu trả lời

    Glycine

  118. Thẻ 118

    Câu hỏi

    Glutamate → draw or recall the side chain

    Câu trả lời

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

    Side chain: Cα–CH₂–CH₂–C(=O)–OH.

  119. Thẻ 119

    Câu hỏi

    H → amino-acid name

    Câu trả lời

    Histidine

  120. Thẻ 120

    Câu hỏi

    Valine → draw or recall the side chain

    Câu trả lời

    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 thẻ

Amino Acid Flashcards: 20 Side-Chain Structures & Codes

Học bộ thẻ này miễn phí

Nibomo sẽ mở ra để bạn bắt đầu học.