1Glycine
One-letter code: G
Three-letter code: Gly
Category: Nonpolar
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2Alanine
One-letter code: A
Three-letter code: Ala
Category: Nonpolar
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3Valine
One-letter code: V
Three-letter code: Val
Category: Nonpolar
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4Leucine
One-letter code: L
Three-letter code: Leu
Category: Nonpolar
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5Isoleucine
One-letter code: I
Three-letter code: Ile
Category: Nonpolar
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6Methionine
One-letter code: M
Three-letter code: Met
Category: Nonpolar
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7Phenylalanine
One-letter code: F
Three-letter code: Phe
Category: Nonpolar
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8Tryptophan
One-letter code: W
Three-letter code: Trp
Category: Nonpolar
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9Proline
One-letter code: P
Three-letter code: Pro
Category: Nonpolar
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10Serine
One-letter code: S
Three-letter code: Ser
Category: Polar
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11Threonine
One-letter code: T
Three-letter code: Thr
Category: Polar
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12Cysteine
One-letter code: C
Three-letter code: Cys
Category: Polar
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13Tyrosine
One-letter code: Y
Three-letter code: Tyr
Category: Polar
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14Asparagine
One-letter code: N
Three-letter code: Asn
Category: Polar
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15Glutamine
One-letter code: Q
Three-letter code: Gln
Category: Polar
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16Aspartate
One-letter code: D
Three-letter code: Asp
Category: Acidic
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17Glutamate
One-letter code: E
Three-letter code: Glu
Category: Acidic
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18Lysine
One-letter code: K
Three-letter code: Lys
Category: Basic
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19Arginine
One-letter code: R
Three-letter code: Arg
Category: Basic
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20Histidine
One-letter code: H
Three-letter code: His
Category: Basic
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