लॉग इनमुफ़्त शुरू करें

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.

लेखक Flashcards Open Source App

इस डेक के बारे में

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.

इस डेक के कार्ड

  1. कार्ड 1

    प्रश्न

    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?

    उत्तर

    Histidine — side chain: Cα–CH₂–imidazolyl.

  2. कार्ड 2

    प्रश्न

    Valine → three-letter code

    उत्तर

    Val

  3. कार्ड 3

    प्रश्न

    Serine → one-letter code

    उत्तर

    S

  4. कार्ड 4

    प्रश्न

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

    Which amino acid has this side chain?

    उत्तर

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

  5. कार्ड 5

    प्रश्न

    Phenylalanine → three-letter code

    उत्तर

    Phe

  6. कार्ड 6

    प्रश्न

    Lysine → one-letter code

    उत्तर

    K

  7. कार्ड 7

    प्रश्न

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

    Which amino acid has this side chain?

    उत्तर

    Alanine — side chain: Cα–CH₃.

  8. कार्ड 8

    प्रश्न

    Isoleucine → three-letter code

    उत्तर

    Ile

  9. कार्ड 9

    प्रश्न

    Cysteine → one-letter code

    उत्तर

    C

  10. कार्ड 10

    प्रश्न

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

    Which amino acid has this side chain?

    उत्तर

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

  11. कार्ड 11

    प्रश्न

    Tyrosine → three-letter code

    उत्तर

    Tyr

  12. कार्ड 12

    प्रश्न

    Arginine → one-letter code

    उत्तर

    R

  13. कार्ड 13

    प्रश्न

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

    Which amino acid has this side chain?

    उत्तर

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

  14. कार्ड 14

    प्रश्न

    Leucine → three-letter code

    उत्तर

    Leu

  15. कार्ड 15

    प्रश्न

    Threonine → one-letter code

    उत्तर

    T

  16. कार्ड 16

    प्रश्न

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

    Which amino acid has this side chain?

    उत्तर

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

  17. कार्ड 17

    प्रश्न

    Tryptophan → three-letter code

    उत्तर

    Trp

  18. कार्ड 18

    प्रश्न

    Methionine → one-letter code

    उत्तर

    M

  19. कार्ड 19

    प्रश्न

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

    Which amino acid has this side chain?

    उत्तर

    Glycine — side chain: Cα–H.

  20. कार्ड 20

    प्रश्न

    Glutamate → three-letter code

    उत्तर

    Glu

  21. कार्ड 21

    प्रश्न

    Val → amino-acid name

    उत्तर

    Valine

  22. कार्ड 22

    प्रश्न

    S → amino-acid name

    उत्तर

    Serine

  23. कार्ड 23

    प्रश्न

    Asparagine → three-letter code

    उत्तर

    Asn

  24. कार्ड 24

    प्रश्न

    Phenylalanine → one-letter code

    उत्तर

    F

  25. कार्ड 25

    प्रश्न

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

    Which amino acid has this side chain?

    उत्तर

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

  26. कार्ड 26

    प्रश्न

    Alanine → draw or recall the side chain

    उत्तर

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

    Side chain: Cα–CH₃.

  27. कार्ड 27

    प्रश्न

    Ile → amino-acid name

    उत्तर

    Isoleucine

  28. कार्ड 28

    प्रश्न

    C → amino-acid name

    उत्तर

    Cysteine

  29. कार्ड 29

    प्रश्न

    Aspartate → three-letter code

    उत्तर

    Asp

  30. कार्ड 30

    प्रश्न

    Tyrosine → one-letter code

    उत्तर

    Y

  31. कार्ड 31

    प्रश्न

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

    Which amino acid has this side chain?

    उत्तर

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

  32. कार्ड 32

    प्रश्न

    Proline → draw or recall the side chain

    उत्तर

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

    Side chain: Cα–(CH₂)₃–Nα.

  33. कार्ड 33

    प्रश्न

    Leu → amino-acid name

    उत्तर

    Leucine

  34. कार्ड 34

    प्रश्न

    T → amino-acid name

    उत्तर

    Threonine

  35. कार्ड 35

    प्रश्न

    Glutamine → three-letter code

    उत्तर

    Gln

  36. कार्ड 36

    प्रश्न

    Tryptophan → one-letter code

    उत्तर

    W

  37. कार्ड 37

    प्रश्न

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

    Which amino acid has this side chain?

    उत्तर

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

  38. कार्ड 38

    प्रश्न

    Glycine → draw or recall the side chain

    उत्तर

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

    Side chain: Cα–H.

  39. कार्ड 39

    प्रश्न

    Glu → amino-acid name

    उत्तर

    Glutamate

  40. कार्ड 40

    प्रश्न

    Histidine → draw or recall the side chain

    उत्तर

    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. कार्ड 41

    प्रश्न

    K → amino-acid name

    उत्तर

    Lysine

  42. कार्ड 42

    प्रश्न

    Alanine → three-letter code

    उत्तर

    Ala

  43. कार्ड 43

    प्रश्न

    Isoleucine → one-letter code

    उत्तर

    I

  44. कार्ड 44

    प्रश्न

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

    Which amino acid has this side chain?

    उत्तर

    Cysteine — side chain: Cα–CH₂–SH.

  45. कार्ड 45

    प्रश्न

    Aspartate → draw or recall the side chain

    उत्तर

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

    Side chain: Cα–CH₂–C(=O)–OH.

  46. कार्ड 46

    प्रश्न

    Tyr → amino-acid name

    उत्तर

    Tyrosine

  47. कार्ड 47

    प्रश्न

    R → amino-acid name

    उत्तर

    Arginine

  48. कार्ड 48

    प्रश्न

    Proline → three-letter code

    उत्तर

    Pro

  49. कार्ड 49

    प्रश्न

    Leucine → one-letter code

    उत्तर

    L

  50. कार्ड 50

    प्रश्न

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

    Which amino acid has this side chain?

    उत्तर

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

  51. कार्ड 51

    प्रश्न

    Glutamine → draw or recall the side chain

    उत्तर

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

    Side chain: Cα–CH₂–CH₂–C(=O)–NH₂.

  52. कार्ड 52

    प्रश्न

    Trp → amino-acid name

    उत्तर

    Tryptophan

  53. कार्ड 53

    प्रश्न

    M → amino-acid name

    उत्तर

    Methionine

  54. कार्ड 54

    प्रश्न

    Glycine → three-letter code

    उत्तर

    Gly

  55. कार्ड 55

    प्रश्न

    Glutamate → one-letter code

    उत्तर

    E

  56. कार्ड 56

    प्रश्न

    Histidine → three-letter code

    उत्तर

    His

  57. कार्ड 57

    प्रश्न

    Valine → one-letter code

    उत्तर

    V

  58. कार्ड 58

    प्रश्न

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

    Which amino acid has this side chain?

    उत्तर

    Serine — side chain: Cα–CH₂–OH.

  59. कार्ड 59

    प्रश्न

    Asparagine → draw or recall the side chain

    उत्तर

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

    Side chain: Cα–CH₂–C(=O)–NH₂.

  60. कार्ड 60

    प्रश्न

    Phe → amino-acid name

    उत्तर

    Phenylalanine

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

    120 कार्ड

    Amino Acid Flashcards: 20 Side-Chain Structures & Codes

    इस डेक से मुफ़्त में पढ़ें

    पढ़ाई शुरू करने के लिए Flashcards खुलेगा।

  61. कार्ड 61

    प्रश्न

    I → amino-acid name

    उत्तर

    Isoleucine

  62. कार्ड 62

    प्रश्न

    Cysteine → draw or recall the side chain

    उत्तर

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

    Side chain: Cα–CH₂–SH.

  63. कार्ड 63

    प्रश्न

    Aspartate → one-letter code

    उत्तर

    D

  64. कार्ड 64

    प्रश्न

    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?

    उत्तर

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

  65. कार्ड 65

    प्रश्न

    Arginine → three-letter code

    उत्तर

    Arg

  66. कार्ड 66

    प्रश्न

    Pro → amino-acid name

    उत्तर

    Proline

  67. कार्ड 67

    प्रश्न

    L → amino-acid name

    उत्तर

    Leucine

  68. कार्ड 68

    प्रश्न

    Threonine → draw or recall the side chain

    उत्तर

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

    Side chain: Cα–CH(OH)–CH₃.

  69. कार्ड 69

    प्रश्न

    Glutamine → one-letter code

    उत्तर

    Q

  70. कार्ड 70

    प्रश्न

    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?

    उत्तर

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

  71. कार्ड 71

    प्रश्न

    Methionine → three-letter code

    उत्तर

    Met

  72. कार्ड 72

    प्रश्न

    Gly → amino-acid name

    उत्तर

    Glycine

  73. कार्ड 73

    प्रश्न

    E → amino-acid name

    उत्तर

    Glutamate

  74. कार्ड 74

    प्रश्न

    His → amino-acid name

    उत्तर

    Histidine

  75. कार्ड 75

    प्रश्न

    V → amino-acid name

    उत्तर

    Valine

  76. कार्ड 76

    प्रश्न

    Serine → draw or recall the side chain

    उत्तर

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

    Side chain: Cα–CH₂–OH.

  77. कार्ड 77

    प्रश्न

    Asparagine → one-letter code

    उत्तर

    N

  78. कार्ड 78

    प्रश्न

    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?

    उत्तर

    Phenylalanine — side chain: Cα–CH₂–C₆H₅.

  79. कार्ड 79

    प्रश्न

    Lysine → three-letter code

    उत्तर

    Lys

  80. कार्ड 80

    प्रश्न

    Ala → amino-acid name

    उत्तर

    Alanine

  81. कार्ड 81

    प्रश्न

    Proline → one-letter code

    उत्तर

    P

  82. कार्ड 82

    प्रश्न

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

    Which amino acid has this side chain?

    उत्तर

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

  83. कार्ड 83

    प्रश्न

    Threonine → three-letter code

    उत्तर

    Thr

  84. कार्ड 84

    प्रश्न

    Gln → amino-acid name

    उत्तर

    Glutamine

  85. कार्ड 85

    प्रश्न

    W → amino-acid name

    उत्तर

    Tryptophan

  86. कार्ड 86

    प्रश्न

    Methionine → draw or recall the side chain

    उत्तर

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

    Side chain: Cα–CH₂–CH₂–S–CH₃.

  87. कार्ड 87

    प्रश्न

    Glycine → one-letter code

    उत्तर

    G

  88. कार्ड 88

    प्रश्न

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

    Which amino acid has this side chain?

    उत्तर

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

  89. कार्ड 89

    प्रश्न

    Histidine → one-letter code

    उत्तर

    H

  90. कार्ड 90

    प्रश्न

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

    Which amino acid has this side chain?

    उत्तर

    Valine — side chain: Cα–CH(CH₃)₂.

  91. कार्ड 91

    प्रश्न

    Serine → three-letter code

    उत्तर

    Ser

  92. कार्ड 92

    प्रश्न

    Asn → amino-acid name

    उत्तर

    Asparagine

  93. कार्ड 93

    प्रश्न

    F → amino-acid name

    उत्तर

    Phenylalanine

  94. कार्ड 94

    प्रश्न

    Lysine → draw or recall the side chain

    उत्तर

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

    Side chain: Cα–(CH₂)₄–NH₂.

  95. कार्ड 95

    प्रश्न

    Alanine → one-letter code

    उत्तर

    A

  96. कार्ड 96

    प्रश्न

    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?

    उत्तर

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

  97. कार्ड 97

    प्रश्न

    Cysteine → three-letter code

    उत्तर

    Cys

  98. कार्ड 98

    प्रश्न

    Asp → amino-acid name

    उत्तर

    Aspartate

  99. कार्ड 99

    प्रश्न

    Y → amino-acid name

    उत्तर

    Tyrosine

  100. कार्ड 100

    प्रश्न

    Arginine → draw or recall the side chain

    उत्तर

    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. कार्ड 101

    प्रश्न

    Ser → amino-acid name

    उत्तर

    Serine

  102. कार्ड 102

    प्रश्न

    N → amino-acid name

    उत्तर

    Asparagine

  103. कार्ड 103

    प्रश्न

    Phenylalanine → draw or recall the side chain

    उत्तर

    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. कार्ड 104

    प्रश्न

    Lys → amino-acid name

    उत्तर

    Lysine

  105. कार्ड 105

    प्रश्न

    A → amino-acid name

    उत्तर

    Alanine

  106. कार्ड 106

    प्रश्न

    Isoleucine → draw or recall the side chain

    उत्तर

    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. कार्ड 107

    प्रश्न

    Cys → amino-acid name

    उत्तर

    Cysteine

  108. कार्ड 108

    प्रश्न

    D → amino-acid name

    उत्तर

    Aspartate

  109. कार्ड 109

    प्रश्न

    Tyrosine → draw or recall the side chain

    उत्तर

    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. कार्ड 110

    प्रश्न

    Arg → amino-acid name

    उत्तर

    Arginine

  111. कार्ड 111

    प्रश्न

    P → amino-acid name

    उत्तर

    Proline

  112. कार्ड 112

    प्रश्न

    Leucine → draw or recall the side chain

    उत्तर

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

    Side chain: Cα–CH₂–CH(CH₃)₂.

  113. कार्ड 113

    प्रश्न

    Thr → amino-acid name

    उत्तर

    Threonine

  114. कार्ड 114

    प्रश्न

    Q → amino-acid name

    उत्तर

    Glutamine

  115. कार्ड 115

    प्रश्न

    Tryptophan → draw or recall the side chain

    उत्तर

    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. कार्ड 116

    प्रश्न

    Met → amino-acid name

    उत्तर

    Methionine

  117. कार्ड 117

    प्रश्न

    G → amino-acid name

    उत्तर

    Glycine

  118. कार्ड 118

    प्रश्न

    Glutamate → draw or recall the side chain

    उत्तर

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

    Side chain: Cα–CH₂–CH₂–C(=O)–OH.

  119. कार्ड 119

    प्रश्न

    H → amino-acid name

    उत्तर

    Histidine

  120. कार्ड 120

    प्रश्न

    Valine → draw or recall the side chain

    उत्तर

    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 कार्ड

Amino Acid Flashcards: 20 Side-Chain Structures & Codes

इस डेक से मुफ़्त में पढ़ें

पढ़ाई शुरू करने के लिए Flashcards खुलेगा।