Threonine
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Ball-and-stick model
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Space-filling model
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| Names
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| IUPAC name
Threonine
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| Other names
2-Amino-3-hydroxybutanoic acid
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| Identifiers
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- 80-68-2 Y
- 72-19-5 (L-isomer) Y
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3D model (JSmol)
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| ChEBI
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| ChEMBL
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| ChemSpider
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| DrugBank
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| ECHA InfoCard
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100.000.704
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| EC Number
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IUPHAR/BPS
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| UNII
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C[C@H]([C@@H](C(=O)O)N)O Zwitterion: C[C@H]([C@@H](C(=O)[O-])[NH3+])O
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| Properties
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C4H9NO3
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| Molar mass
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119.12 g·mol−1
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(H2O, g/dl) 10.6(30°),14.1(52°),19.0(61°)
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| Acidity (pKa)
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2.63 (carboxyl), 10.43 (amino)[1]
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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| N verify (what is YN ?)
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| Infobox references
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Threonine (symbol Thr or T)[2] is an amino acid that is used in the biosynthesis of proteins.
History
Threonine was discovered in 1936 by William Cumming Rose and Curtis Meyer.[3]
References
Other websites
Encoded (proteinogenic) amino acids |
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| General topics | |
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| By properties | | Aliphatic |
- Alanine
- Branched-chain amino acids (Valine
- Isoleucine
- Leucine)
- Methionine
- Proline
- Glycine
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| Aromatic | |
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| Polar, uncharged | |
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| Positive charge (pKa) |
- Histidine (≈6.1)
- Lysine (≈10.8)
- Arginine (≈12.5)
- Pyrrolysine
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| Negative charge (pKa) | |
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- Amino acids types: Encoded (proteins)
- Essential
- Non-proteinogenic
- Ketogenic
- Glucogenic
- Secondary amino
- Imino acids
- D-amino acids
- Dehydroamino acids
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| K→acetyl-CoA | | lysine→ |
- Saccharopine
- Allysine
- α-Aminoadipic acid
- 2-Oxoadipic acid
- Glutaryl-CoA
- Glutaconyl-CoA
- Crotonyl-CoA
- β-Hydroxybutyryl-CoA
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| leucine→ |
- β-Hydroxy β-methylbutyric acid
- β-Hydroxy β-methylbutyryl-CoA
- Isovaleryl-CoA
- α-Ketoisocaproic acid
- β-Ketoisocaproic acid
- β-Ketoisocaproyl-CoA
- β-Leucine
- β-Methylcrotonyl-CoA
- β-Methylglutaconyl-CoA
- β-Hydroxy β-methylglutaryl-CoA
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| tryptophan→alanine→ |
- N′-Formylkynurenine
- Kynurenine
- Anthranilic acid
- 3-Hydroxykynurenine
- 3-Hydroxyanthranilic acid
- 2-Amino-3-carboxymuconic semialdehyde
- 2-Aminomuconic semialdehyde
- 2-Aminomuconic acid
- Glutaryl-CoA
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| G | G→pyruvate→ citrate | glycine→ serine→ |
- glycine→creatine: Glycocyamine
- Phosphocreatine
- Creatinine
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G→glutamate→ α-ketoglutarate | | histidine→ |
- Urocanic acid
- Imidazol-4-one-5-propionic acid
- Formiminoglutamic acid
- Glutamate-1-semialdehyde
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| proline→ |
- 1-Pyrroline-5-carboxylic acid
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| arginine→ |
- Agmatine
- Ornithine
- Citrulline
- Cadaverine
- Putrescine
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| other | |
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G→propionyl-CoA→ succinyl-CoA | | valine→ |
- α-Ketoisovaleric acid
- Isobutyryl-CoA
- Methacrylyl-CoA
- 3-Hydroxyisobutyryl-CoA
- 3-Hydroxyisobutyric acid
- 2-Methyl-3-oxopropanoic acid
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| isoleucine→ |
- 2,3-Dihydroxy-3-methylpentanoic acid
- 2-Methylbutyryl-CoA
- Tiglyl-CoA
- 2-Methylacetoacetyl-CoA
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| methionine→ |
- generation of homocysteine: S-Adenosyl methionine
- S-Adenosyl-L-homocysteine
- Homocysteine
- conversion to cysteine: Cystathionine
- α-Ketobutyric acid + Cysteine
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| threonine→ | |
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| propionyl-CoA→ | |
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| G→fumarate | |
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| G→oxaloacetate | |
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| Other | |
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